0 Why does man print gimme gimme gimme at 00:30? 1 What is the exact difference between a terminal, a shell, a tty and a console? 2 How do I get the size of a directory on the command line? 3 How to correctly add a path to PATH? 4 How to install a deb file, by dpkg -i or by apt? 5 How to copy files from one machine to another using ssh 6 How can I replace a string in a file(s)? 7 How to unfreeze after accidentally pressing Ctrl-S in a terminal? 8 Why was ~ chosen to represent the home directory? 9 How do I grep for multiple patterns with pattern having a pipe character? 10 What is the purpose of the lost+found folder in Linux and Unix? 11 How do I make `ls` show file sizes in megabytes? 12 Difference between nohup, disown and & 13 How to see full log from systemctl status service? 14 How to run find -exec? 15 Tracking down where disk space has gone on Linux? 16 What does -- (double-dash) mean? 17 How to cycle through reverse-i-search in BASH? 18 Why is printf better than echo? 19 How do I zip/unzip on the unix command line? 20 Preserve bash history in multiple terminal windows 21 How to switch between users on one terminal? 22 What do the numbers in a man page mean? 23 Zip all files in directory? 24 Why am I still getting a password prompt with ssh with public key authentication? 25 Using ${a:-b} for variable assignment in scripts 26 /usr/bin vs /usr/local/bin on Linux 27 Why is it better to use #!/usr/bin/env NAME instead of #!/path/to/NAME as my shebang? 28 Does curl have a --no-check-certificate option like wget? 29 Repeat a Unix command every x seconds forever 30 How can I reduce a videos size with ffmpeg? 31 What if kill -9 does not work? 32 Finding the PID of the process using a specific port? 33 How to force ssh client to use only password auth? 34 What is the difference between /opt and /usr/local? 35 Scroll inside Screen, or Pause Output 36 How to get execution time of a script effectively? 37 How can I resolve a hostname to an IP address in a Bash script? 38 How to display `top` results sorted by memory usage in real time? 39 How do I check package version using apt-get / aptitude? 40 Can I zip an entire folder using gzip? 41 How do I copy a folder keeping owners and permissions intact? 42 Turn off buffering in pipe 43 Can less retain colored output? 44 What is a bind mount? 45 How to forward X over SSH to run graphics applications remotely? 46 How to append multiple lines to a file 47 Execute vs Read bit. How do directory permissions in Linux work? 48 Can grep output only specified groupings that match? 49 recursive mkdir 50 How to conditionally do something if a command succeeded or failed 51 What is the difference between the Bash operators [[ vs [ vs ( vs ((? 52 Difference between Login Shell and Non-Login Shell? 53 How does reverse SSH tunneling work? 54 How do I remove a user from a group? 55 How do I delete a file whose name begins with - (hyphen a.k.a. dash or minus)? 56 Why not use which? What to use then? 57 When should I not kill -9 a process? 58 How can I pass a command line argument into a shell script? 59 refresh changed content of file opened in vi(m) 60 What does LC_ALL=C do? 61 What are the pros and cons of Vim and Emacs? 62 How do I use pushd and popd commands? 63 In Bash, when to alias, when to script, and when to write a function? 64 How can I run a command which will survive terminal close? 65 How to clear journalctl 66 Delete from cursor to end of line in `vi` 67 Using sed to find and replace 68 Get exit status of process thats piped to another 69 How do I loop through only directories in bash? 70 What is the difference between curl and wget? 71 How to copy a file from a remote server to a local machine? 72 How to generate a random string? 73 How can I find the implementations of Linux kernel system calls? 74 Ctrl-s hangs the terminal emulator? 75 How to do integer & float calculations, in bash or other languages/frameworks? 76 How to check OS and version using a Linux command 77 How do you empty the buffers and cache on a Linux system? 78 How can I prevent grep from showing up in ps results? 79 finds -exec rm {} \; vs -delete 80 How can I use sed to replace a multi-line string? 81 What are the shells control and redirection operators? 82 How can I find broken symlinks 83 Compress a folder with tar? 84 How can I delete all lines in a file using vi? 85 What characters do I need to escape when using sed in a sh script? 86 Remove all files/directories except for one file 87 Why does my shell script choke on whitespace or other special characters? 88 What DNS servers am I using? 89 How do I set my DNS when resolv.conf is being overwritten? 90 How can I get the size of a file in a bash script? 91 Does curl have a timeout? 92 In a bash script, using the conditional or in an if statement 93 What is the fastest way to view images from the terminal? 94 GPU usage monitoring (CUDA) 95 How to get over device or resource busy? 96 How can I monitor disk io? 97 Specify identity file (id_rsa) with rsync 98 How do I clear Bashs cache of paths to executables? 99 How to list all files ordered by size 100 Whats the story behind Super Cow Powers? 101 What does rc in .bashrc stand for? 102 How to set default file permissions for all folders/files in a directory? 103 Count total number of occurrences using grep 104 How can I get my external IP address in a shell script? 105 How to get the pid of the last executed command in shell script? 106 How to list keys added to ssh-agent with ssh-add? 107 Is it possible to see cp speed and percent copied? 108 How to colorize output of git? 109 Copy a file back to local system with ssh 110 How to split the terminal into more than one view? 111 Hide curl output 112 How to view the output of a running process in another bash session? 113 How can I run ssh-add automatically, without a password prompt? 114 How to define tab delimiter with cut in BASH? 115 How to have tail -f show colored output 116 What do the fields in ls -al output mean? 117 What is the difference between `grep`, `egrep`, and `fgrep`? 118 How to know number of cores of a system in Linux? 119 How to permanently set environmental variables 120 How can I instruct yum to install a specific version of package X? 121 How can I test if a variable is empty or contains only spaces? 122 How do I change the extension of multiple files? 123 Write all tmux scrollback to a file 124 How to remove a single line from history? 125 Colorizing your terminal and shell environment? 126 Whats the difference between $(stuff) and `stuff`? 127 Prepending a timestamp to each line of output from a command 128 How do I equally balance tmux(1) split panes? 129 Better colors so comments arent dark blue in Vim? 130 What should/shouldnt go in .zshenv, .zshrc, .zlogin, .zprofile, .zlogout? 131 How can I get a count of files in a directory using the command line? 132 How to check how long a process has been running? 133 Moving tmux pane to window 134 How to know whether Wayland or X11 is being used 135 Why doesnt my Bash script recognize aliases? 136 How does a Segmentation Fault work under-the-hood? 137 List available updates but do not install them 138 How to avoid being asked passphrase each time I push to Bitbucket 139 What are the differences between most, more and less? 140 What is the real difference between apt-get and aptitude? (How about wajig?) 141 How do I set an environment variable on the command line and have it appear in commands? 142 How can I make Press any key to continue 143 How do I find out what hard disks are in the system? 144 How do I trim leading and trailing whitespace from each line of some output? 145 Whats the point in adding a new line to the end of a file? 146 How to terminate a background process? 147 Keep processes running after SSH session disconnects 148 Convince apt-get *not* to use IPv6 method 149 What is the eval command in bash? 150 How to reload udev rules without reboot? 151 How to know if a disk is an SSD or an HDD 152 How to go to the previous working directory in terminal? 153 Change the Python3 default version in Ubuntu 154 How to write startup script for Systemd? 155 Most efficient method to empty the contents of a file 156 View stdout/stderr of systemd service 157 How can I update to a newer version of Git using apt-get? 158 How can I get the current working directory? 159 How to monitor CPU/memory usage of a single process? 160 Can rsync resume after being interrupted? 161 Multiple similar entries in ssh config 162 Sort and count number of occurrence of lines 163 Whats ssh port forwarding and whats the difference between ssh local and remote port forwarding 164 Recursively delete all files with a given extension 165 How do I convert an epoch timestamp to a human readable format on the cli? 166 How to display meminfo in megabytes in top? 167 Where did the wheel group get its name? 168 Why *not* parse `ls` (and what to do instead)? 169 Why is FreeBSD deprecating GCC in favor of Clang/LLVM? 170 how can I make cron run a job right now, for testing/debugging? without changing the schedule! 171 Kernel inotify watch limit reached 172 How to create a new window on the current directory in tmux? 173 What does env x=() { :;}; command bash do and why is it insecure? 174 What is `^M` and how do I get rid of it? 175 How can I send stdout to multiple commands? 176 Delete the last character of a string using string manipulation in shell script 177 How to tell gzip to keep original file? 178 How create a temporary file in shell script? 179 What do the flags in /proc/cpuinfo mean? 180 SSH tunneling error: channel 1: open failed: administratively prohibited: open failed 181 Why is using a shell loop to process text considered bad practice? 182 Security implications of forgetting to quote a variable in bash/POSIX shells 183 How to import secret gpg key (copied from one machine to another)? 184 How to add a newline to the end of a file? 185 Difference between 2>&-, 2>/dev/null, |&, &>/dev/null and >/dev/null 2>&1 186 How do you sort du output by size? 187 Efficiently delete large directory containing thousands of files 188 Can I create a user-specific hosts file to complement /etc/hosts? 189 Why do I need a tty to run sudo if I can sudo without a password? 190 Get file created/creation time? 191 How can get a list of all scheduled cron jobs on my machine? 192 Linux top command: What are us, sy, ni, id, wa, hi, si and st (for CPU usage)? 193 How can I get distribution name and version number in a simple shell script? 194 Why does `htop` show more process than `ps` 195 List all connected SSH sessions? 196 What is the meaning of IFS=$\n in bash scripting? 197 What is the purpose of .bashrc and how does it work? 198 redirecting to /dev/null 199 How to suspend and bring a background process to foreground 200 How to change where a symlink points 201 Why is ls suddenly wrapping items with spaces in single quotes? 202 Execute a command once per line of piped input? 203 What makes grep consider a file to be binary? 204 Why are tar archive formats switching to xz compression to replace bzip2 and what about gzip? 205 Cant resume screen, says I am already attached? 206 how can I recursively delete empty directories in my home directory? 207 Can I remove files in /var/log/journal and /var/cache/abrt-di/usr? 208 Allow setuid on shell scripts 209 Difference between cp -r and cp -a 210 What does aux mean in `ps aux`? 211 What does ` (backquote/backtick) mean in commands? 212 How do I make my pc speaker beep 213 Getting 256 colors to work in tmux 214 Find command: how to ignore case? 215 Find where inodes are being used 216 How can I calculate the size of a directory? 217 Find out current working directory of a running process? 218 VISUAL vs. EDITOR – what’s the difference? 219 How to determine where an environment variable came from? 220 Unzipping a .gz file without removing the gzipped file 221 What does etc stand for? 222 What do options `ServerAliveInterval` and `ClientAliveInterval` in sshd_config do exactly? 223 What is the working directory when cron executes a job? 224 How can I display the contents of a text file on the command line? 225 How can I edit multiple files in VIM? 226 Any reason NOT to run Linux in a VM all the time? 227 Is there a one-liner that allows me to create a directory and move into it at the same time? 228 umount: device is busy. Why? 229 Extract only a specific file from a zipped archive to a given directory 230 scp without replacing existing files in the destination 231 Markdown Viewer 232 Terminal prompt not wrapping correctly 233 linux: How can I view all UUIDs for all available disks on my system? 234 How do I get the MD5 sum of a directorys contents as one sum? 235 What causes this green background in ls output? 236 How to fill 90% of the free memory? 237 Find the total size of certain files within a directory branch 238 How to use find command to search for multiple extensions 239 How to install Desktop Environments on CentOS 7? 240 Whats the difference between /sbin/nologin and /bin/false 241 There are stopped jobs (on bash exit) 242 How to rsync only new files 243 Limit memory usage for a single Linux process 244 How can I grep in PDF files? 245 How to move and overwrite subdirectories (and files) to parent directory? 246 How to run a specific program as root without a password prompt? 247 How to get the complete and exact list of mounted filesystems in Linux? 248 Where are cron errors logged? 249 Why do we use su - and not just su? 250 delete line in vi 251 How to scroll in a terminal using keyboard? 252 Is Linux a Unix? 253 What is the difference between Docker, LXD, and LXC 254 tmux vs. GNU Screen 255 Where are Apache file access logs stored? 256 How to delete directories based on `find` output? 257 Whats the difference between semicolon and double ampersand && 258 Do the parent directorys permissions matter when accessing a subdirectory? 259 Merging folders with mv? 260 The proper way to test if a service is running in a script 261 Failed to fetch jessie backports repository 262 Can grep return true/false or are there alternative methods 263 How can I populate a file with random data? 264 Why is looping over finds output bad practice? 265 How to recursively find the amount stored in directory? 266 Passing named arguments to shell scripts 267 How do you move all files (including hidden) from one directory to another? 268 How can I delete a word backward at the command line (bash and zsh)? 269 How to skip permission denied errors when running find in Linux? 270 Is your SSH password revealed when you attempt to connect to the wrong server? 271 How can I set vi as my default editor in UNIX? 272 What are the pros/cons of Upstart and systemd? 273 Run a command that is shadowed by an alias 274 Combined `mkdir` and `cd`? 275 How can I see dmesg output as it changes? 276 Looping through files with spaces in the names? 277 How to use wildcards (*) when copying with scp? 278 How to remove all empty directories in a subtree? 279 Delete files older than X days + 280 $VAR vs ${VAR} and to quote or not to quote 281 ifconfig command not found 282 ssh-add complains: Could not open a connection to your authentication agent 283 How to debug a bash script? 284 How do I remove a directory and all its contents? 285 Timezone setting in Linux 286 Sort based on the third column 287 Copy text from one tmux pane to another (using vim) 288 What are the pros/cons of deb vs. rpm? 289 How to check if a shell is login/interactive/batch 290 Move folder content up one level 291 Open `less` scrolled to the end 292 Batch renaming files 293 How can I disown a running process and associate it to a new screen shell? 294 ssh-add is not persistent between reboots 295 do changes in /etc/security/limits.conf require a reboot? 296 Parallelize a Bash FOR Loop 297 Pass the output of previous command to next as an argument 298 tar: Removing leading `/ from member names 299 How to clean log file? 300 Script to monitor folder for new files? 301 How to suspend and resume processes 302 Rsync filter: copying one pattern only 303 How can I add a signature .png to a PDF in Linux? 304 Simple command line HTTP server 305 How to copy-merge two directories? 306 How can I wrap text at a certain column size? 307 Can I redirect output to a log file and background a process at the same time? 308 What does <<< mean? 309 Are there naming conventions for variables in shell scripts? 310 Creating diagrams in ASCII 311 How to put current line at top/center/bottom of screen in vim? 312 Trying to SSH to local VM Ubuntu with Putty 313 remove particular characters from a variable using bash 314 Is CentOS exactly the same as RHEL? 315 What is the purpose of using shift in shell scripts? 316 What color codes can I use in my PS1 prompt? 317 How do I determine the number of RAM slots in use? 318 Quoting within $(command substitution) in Bash 319 Precedence of the shell logical operators &&, || 320 Is there an easy way to replace duplicate files with hardlinks? 321 I deleted /bin/rm. How do I recover it? 322 Why would someone choose FreeBSD over Linux? 323 List files sorted numerically 324 Executing chdir before starting systemd service 325 What is the point of Ctrl-S? 326 How to list disks, partitions and filesystems in Linux? 327 Viewing all iptables rules 328 cat line X to line Y on a huge file 329 How do you extract a single folder from a large tar.gz archive? 330 How to remove duplicate lines inside a text file? 331 Whats the difference between a normal user and a system user? 332 In CentOS, what is the difference between yum update and yum upgrade? 333 How to redirect output of wget as input to unzip? 334 Human readable memory sizes in top? 335 Renumbering windows in tmux 336 Unix/Linux undelete/recover deleted files 337 How do I write a retry logic in script to keep retrying to run it upto 5 times? 338 How to extract specific file(s) from tar.gz 339 Copy specific file type keeping the folder structure 340 Easily unpack DEB, edit postinst, and repack DEB 341 How to stop the find command after first match? 342 Using the not equal operator for string comparison 343 Good detailed explanation of /etc/network/interfaces syntax? 344 How can I execute `date` inside of a cron tab job? 345 How to find out from the logs what caused system shutdown? 346 Is there a way to dynamically refresh the less command? 347 How to make `sudo` preserve $PATH? 348 How to choose directory name during untarring 349 How to chmod without /usr/bin/chmod? 350 What does >/dev/null 2>&1 mean in this article of crontab basics? 351 How to uppercase the command line argument? 352 How to enable diffie-hellman-group1-sha1 key exchange on Debian 8.0? 353 Finding all large files in the root filesystem 354 How do I grep recursively through .gz files? 355 Is there a way to redirect nohup output to a log file other than nohup.out? 356 How big is the pipe buffer? 357 Bash: What does >| do? 358 Return only the portion of a line after a matching pattern 359 How do I set a user environment variable? (permanently, not session) 360 Linux: Difference between /dev/console , /dev/tty and /dev/tty0 361 How do I remove the first 300 million lines from a 700 GB txt file on a system with 1 TB disk space? 362 Temporarily suspend bash_history on a given shell? 363 What to do when a Linux desktop freezes? 364 Sorting down processes by memory usage 365 How does the sticky bit work? 366 Zip the contents of a folder without including the folder itself 367 Run a command without making me wait 368 Using sed to find and replace complex string (preferrably with regex) 369 GUI for GIT similar to SourceTree 370 Where do executables look for shared objects at runtime? 371 What is the difference between /tmp and /var/tmp? 372 Determine the size of a block device 373 Why is number of open files limited in Linux? 374 How can I have `date` output the time from a different timezone? 375 no public key available on apt-get update 376 How to download portion of video with youtube-dl command? 377 How to start tmux with attach if a session exists 378 How is Mono magical? 379 How to uncompress zlib data in UNIX? 380 How do I do a ls and then sort the results by date created? 381 How can I move files and view the progress (e.g. with a progress bar)? 382 Is it possible to find out the hosts in the known_hosts file? 383 How do I read from /proc/$pid/mem under Linux? 384 Why does find -mtime +1 only return files older than 2 days? 385 How do I add X days to date and get new date? 386 Why use swap when there is more than enough free space in RAM? 387 Fix terminal after displaying a binary file 388 Determine if Git working directory is clean from a script 389 How does systemd use /etc/init.d scripts? 390 How do I know if dd is still working? 391 Generate File of a certain size? 392 What is the difference between modify and change in stat command context? 393 Is there any way to execute commands from history? 394 Make all new files in a directory accessible to a group 395 What exactly is POSIX? 396 Too many levels of symbolic links 397 How to run a program in a clean environment in bash? 398 Split string by delimiter and get N-th element 399 Delete First line of a file 400 How to add repository from shell in Debian? 401 List only regular files (but not directories) in current directory 402 How to redirect output to a file from within cron? 403 What is the Fedora equivalent of the Debian build-essential package? 404 In Arch Linux how can I find out which package to install that will contain file X? 405 Copy-Paste in xfce4-terminal adds 0~ and 1~ 406 What does the @ mean in ls -l? 407 How to make a machine accessible from the LAN using its hostname 408 What is the difference between sort -u and sort | uniq? 409 How can I check if swap is active from the command line? 410 locate vs find: usage, pros and cons of each other 411 What does the .d stand for in directory names? 412 How to create nested directory in a single command? 413 Cant use exclamation mark (!) in bash? 414 How to find applications path from command line? 415 How can I count the number of lines of a file with common tools? 416 How do I delete the first n lines of an ascii file using shell commands? 417 How do I limit the number of files printed by ls? 418 When is double-quoting necessary? 419 dd vs cat -- is dd still relevant these days? 420 How do I unset a variable at the command line? 421 What does ampersand mean at the end of a shell script line? 422 Automated ssh-keygen without passphrase, how? 423 How to disable auto suspend when I close laptop lid? 424 Can I configure my Linux system for more aggressive file system caching? 425 Whats the recommended way of copying changes with vimdiff? 426 How to get only files created after a date with ls? 427 How can I run a cron command with existing environmental variables? 428 How can I execute local script on remote machine and include arguments? 429 Understanding of diff output 430 diff within a line 431 How to determine Linux kernel architecture? 432 Mount cifs Network Drive: write permissions and chown 433 What is a Superblock, Inode, Dentry and a File? 434 How do SO (shared object) numbers work? 435 Can I watch the progress of a `sync` operation? 436 how can I add (subtract, etc.) two numbers with bash? 437 Find and remove large files that are open but have been deleted 438 The myths about malware in Unix / Linux 439 Where should I put software I compile myself? 440 Have backticks (i.e. `cmd`) in *sh shells been deprecated? 441 How to move all files and folders via mv command 442 How can I fix cannot find a valid baseurl for repo errors on CentOS? 443 Usage of dash (-) in place of a filename 444 Exit vim more quickly 445 Clone ownership and permissions from another file? 446 When is xargs needed? 447 Why does Vim indent pasted code incorrectly? 448 Convince grep to output all lines, not just those with matches 449 How to combine 2 -name conditions in find? 450 date command --iso-8601 option 451 How to see process created by specific user in Unix/linux 452 How do I repeat the last command without using the arrow keys? 453 Get the chmod numerical value for a file 454 How to remove an audio track from an mp4 video file? 455 How to XZ a directory with TAR using maximum compression? 456 How to export variables from a file? 457 Bluetooth Pairing on Dual Boot of Windows & Linux Mint/Ubuntu - Stop having to Pair Devices 458 Keyboard set to cat mode 459 How to kill a runaway cat? 460 How to monitor only the last n lines of a log file? 461 Can scp create a directory if it doesnt exist? 462 Why are hard links to directories not allowed in UNIX/Linux? 463 Bash - how to run a command after the previous finished? 464 Manually generate password for /etc/shadow 465 Download using wget to a different directory than current directory 466 grep returns Binary file (standard input) matches when trying to find a string pattern in file 467 Combine the output of two commands in bash 468 Use scp to transfer a file from local directory X to remote directory Y 469 Pass command line arguments to bash script 470 How to make log-rotate change take effect 471 chroot jail - what is it and how do I use it? 472 Why is cd not a program? 473 What does the Broken pipe message mean in an SSH session? 474 Difference between pts and tty 475 How can I do a change word in Vim using the current paste buffer? 476 apache2 Invalid command SSLEngine 477 How to apt-delete-repository? 478 Any way to encode the url in curl command? 479 Trying to sort on two fields, second then first 480 How do I find on which physical device a folder is located? 481 How do we specify multiple ignore patterns for `tree` command? 482 Show top five CPU consuming processes with `ps` 483 File permission issues with shared folders under Virtual Box (Ubuntu Guest, Windows Host) 484 Decoding URL encoding (percent encoding) 485 Where do I put my systemd unit file? 486 Why isnt Linux embraced as the official GNU kernel? 487 How to comment multiple lines at once? 488 The name > org.freedesktop.PolicyKit1 was not provided by any .service files 489 Zip everything in current directory 490 A standard tool to convert a byte-count into human KiB MiB etc; like du, ls1 491 How to merge all (text) files in a directory into one? 492 Where is bashs history stored? 493 How to determine CentOS version? 494 Whats the meaning of a dot before a command in shell? 495 How do you detach the 2nd screen from within another screen? 496 How does Linux handle multiple consecutive path separators (/home////username///file)? 497 Where do files go when the rm command is issued? 498 How do I know if a partition is ext2, ext3, or ext4? 499 Understanding the exclamation mark (!) in bash 500 When to use /dev/random vs /dev/urandom 501 Can I export functions in bash? 502 What is the purpose of the hash command? 503 Which is the safest way to get root privileges: sudo, su or login? 504 Replace string in a huge (70GB), one line, text file 505 How do I attach a terminal to a detached process? 506 Is there a tool to get the lines in one file that are not in another? 507 How can I set my default shell to start up tmux 508 How to do I convert an animated gif to an mp4 or mv4 on the command line? 509 Throttle the download speed of wget or curl while downloading 510 Quick directory navigation in the bash shell 511 Why are there so many different ways to measure disk usage? 512 Is there a way to see details of all the threads that a process has in Linux? 513 -bash: sudo: command not found 514 How can I find the hardware model in Linux? 515 How can I communicate with a Unix domain socket via the shell on Debian Squeeze? 516 How does the OOM killer decide which process to kill first? 517 What is the difference between && and ; when chaining commands 518 What does the @ (at) symbol mean on OSX ls? 519 With the Linux cat command, how do I show only certain lines by number 520 Adding a self-signed certificate to the trusted list 521 Download only format mp4 on youtube-dl 522 Do parentheses really put the command in a subshell? 523 Is there a .bashrc equivalent file read by all shells? 524 Attach to different windows in session 525 Username is not in the sudoers file. This incident will be reported 526 Argument string to integer in bash 527 How to find out the dynamic libraries executables loads when run? 528 How to install Python 3.6? 529 Cause a script to execute after networking has started? 530 Redirecting stdout to a file you dont have write permission on 531 How can I tell what version of Linux Im using? 532 Day of week {0-7} in crontab has 8 options, but we have only 7 days in a week 533 Getting tmux to copy a buffer to the clipboard 534 Easy way to determine the virtualization technology of a Linux machine? 535 What are other ways to share a tmux session between two users? 536 How to do a `tail -f` of log rotated files? 537 How to connect to a serial port as simple as using SSH? 538 How to copy all files from a directory to a remote directory using scp? 539 How to get full path of original file of a soft symbolic link? 540 How can I use ffmpeg to split MPEG video into 10 minute chunks? 541 Is there a way to get the min, max, median, and average of a list of numbers in a single command? 542 What is the need for `fakeroot` command in linux 543 List packages on an apt based system by installation date 544 How do I remotely edit files via ssh? 545 Pseudo files for temporary data 546 What does the Windows flag in the Linux logo of kernel 3.11 mean? 547 What is yum equivalent of apt-get update? 548 Kill an unresponsive ssh session without closing the terminal 549 When was the shellshock (CVE-2014-6271/7169) bug introduced, and what is the patch that fully fixes it? 550 How to find creation date of file? 551 What is the difference between reboot , init 6 and shutdown -r now? 552 Copy the contents of a file into the clipboard without displaying its contents 553 How do I pass a list of files to grep 554 How to grep standard error stream (stderr)? 555 What are pseudo terminals (pty/tty)? 556 How to run a command without hitting Enter Key? 557 Why is echo so much faster than touch? 558 ssh_exchange_identification: read: Connection reset by peer 559 How to show the filesystem type via the terminal? 560 bash - replace space with new line 561 If you ^Z from a process, it gets stopped. How do you switch back in? 562 Forward SIGTERM to child in Bash 563 Why is swappiness set to 60 by default? 564 Cron vs systemd timers 565 difference between function foo() {} and foo() {} 566 Confusing use of && and || operators 567 Get SSH server key fingerprint 568 Recursive glob? 569 What is the difference between $* and $@? 570 ^x^y unix trick for all instances in last command? 571 mount: wrong fs type, bad option, bad superblock 572 How do I clear the terminal History? 573 Quickly calculate date differences 574 List partition labels from the command line 575 GPT or MBR: How do I know? 576 Sorting the output of find -print0 by piping to the sort command 577 How can I start the python SimpleHTTPServer on port 80? 578 How do I find how long ago a Linux system was installed? 579 Difference between /bin and /usr/bin 580 Why is the Linux kernel 15+ million lines of code? 581 How are /dev Linux files created? 582 How to follow links in linux man pages? 583 On what systems is //foo/bar different from /foo/bar? 584 How to open rar file in linux? 585 SSH Key Permissions chmod settings? 586 How do I kill all screens? 587 How to run grep with multiple AND patterns? 588 Getting new files to inherit group permissions on Linux 589 last time file opened 590 How to check if there are no parameters provided to a command? 591 How to sync two folders with command line tools? 592 gpg: keyserver receive failed: No dirmngr 593 Why is video tearing such a problem in Linux? 594 Understanding the output of --info=progress2 from rsync 595 What is the fastest way to send massive amounts of data between two computers? 596 If Linux is only a kernel, then how were its first versions used (without distribution)? 597 Why is there no Euro English locale? 598 ssh_exchange_identification: Connection closed by remote host (not using hosts.deny) 599 How to output only file names (with spaces) in ls -Al? 600 Unable to locate package `docker-ce` on a 64bit ubuntu 601 Writing basic systemd service files 602 How to copy text from vim to an external program? 603 What is a tainted kernel in Linux? 604 What is this folder /run/user/1000? 605 Understanding the -exec option of `find` 606 Why is /dev/null a file? Why isnt its function implemented as a simple program? 607 timestamp, modification time, and created time of a file 608 Why do we need to fork to create new processes? 609 Whats the most appropriate directory where to place files shared between users? 610 Does tail read the whole file? 611 Create a symbolic link relative to the current directory 612 How can I monitor all outgoing requests/connections from my machine? 613 How to compare two dates in a shell? 614 How to insert text before the first line of a file? 615 rm -rf all files and all hidden files without . & .. error 616 Why is my ethernet interface called enp0s10 instead of eth0? 617 Reserved space for root on a filesystem - why? 618 Why does argv include the program name? 619 Error using SCP: not a regular file 620 How to escape quotes in shell? 621 Shell scripting: -z and -n options with if 622 exit tmux window without quitting the Terminal program 623 What is mail, and how is it navigated? 624 How can I remove the BOM from a UTF-8 file? 625 Which installed software packages use the most disk space on Debian? 626 How do you do a dry run of rm to see what files will be deleted? 627 How to use watch command with a piped chain of commands/programs 628 Watch YouTube videos in terminal 629 How to renew an expired keypair with gpg 630 Is Vim immune to copy-paste attack? 631 SSH login with clear text password as a parameter? 632 Why do we use ./ (dot slash) to execute a file in Linux/UNIX? 633 What is /usr/local/bin? 634 In linux, how to delete all files EXCEPT the pattern *.txt? 635 How to export a GPG private key and public key to a file 636 Why doesnt grep ignore binary files by default? 637 What does the (!) mean after uptime on htop 638 Vi vs vim, or, is there any reason why I would ever want to use vi? 639 How to shrink root filesystem without booting a livecd 640 What are high memory and low memory on Linux? 641 Command line: How do you rotate a PDF file 90 degrees? 642 How can I find out which users are in a group within Linux? 643 Simple way to create a tunnel from one local port to another? 644 Does the shebang determine the shell which runs the script? 645 What is the benefit of compiling your own linux kernel? 646 How to unzip a multipart (spanned) ZIP on Linux? 647 Disable a users login without disabling the account 648 Creating a GIF animation from PNG files 649 What is the difference between Halt and Shutdown commands? 650 tput setaf color table? How to determine color codes? 651 In what order do piped commands run? 652 How to insert text after a certain string in a file? 653 How can I restart the SSH daemon on Ubuntu? 654 How to count the number of a specific character in each line? 655 How do I display log messages from previous boots under CentOS 7? 656 How to rsync over ssh when directory names have spaces 657 Is it possible to run ssh-copy-id on port other than 22? 658 Is there a basic tutorial for grep, awk and sed? 659 Does sort support sorting a file in-place, like `sed --in-place`? 660 Process substitution and pipe 661 Match exact string using grep 662 How to create SHA512 password hashes on command line 663 What does systemctl daemon-reload do? 664 Uploading directories with sftp? 665 Generate random numbers in specific range 666 How to dd a remote disk using SSH on local machine and save to a local disk 667 Is there any option with ls command that I see only the directories? 668 How can I install the `ll` command on Mac OS X? 669 How do I know which version of Debian Im running? 670 Does `sl` ever show the current directory? 671 How to find which processes are taking all the memory? 672 what is the CentOS equivalent of /var/log/syslog (on Ubuntu)? 673 Determining what process is bound to a port 674 How do I find out which processes are preventing unmounting of a device? 675 How to update Linux locate cache 676 Where should a local executable be placed? 677 Command-line completion from command history 678 su vs sudo -s vs sudo -i vs sudo bash 679 What happens when you mount over an existing folder with contents? 680 Why ZSH ends a line with a highlighted percent symbol? 681 Why does parameter expansion with spaces without quotes work inside double brackets [[ but not inside single brackets [? 682 Why is there a big delay after entering a wrong password? 683 What is the difference between cat file | ./binary and ./binary < file? 684 How to grep lines which does not begin with # or ;? 685 What is the difference between -m conntrack --ctstate and -m state --state 686 Why is root login via SSH so bad that everyone advises to disable it? 687 tmux status-bar corrupted after catting a binary file, how to reset? 688 How do keyboard input and text output work? 689 How can I make a script in /etc/init.d start at boot? 690 How to determine the filesystem of an unmounted device? 691 Setting /proc/sys/vm/drop_caches to clear cache 692 How to get keycodes for xmodmap? 693 Sorting files according to size recursively 694 What do the scripts in /etc/profile.d do? 695 How can we run a command stored in a variable? 696 How can I create a message box from the command line? 697 What are the systemctl options to List all failed units 698 ulimit: difference between hard and soft limits 699 Search for a previous command with the prefix I just typed 700 convert webp to jpg error: no decode delegate for this image format and missing an image filename 701 Remember a half-typed command while I check something 702 List of available services 703 Error when trying to connect to bluetooth speaker: `org.bluez.Error.Failed` 704 How to add newlines into variables in bash script 705 tmux bottom bar color change 706 determining path to sourced shell script 707 Find duplicate files 708 What does it mean to have a $dollarsign-prefixed string in a script? 709 Detect init system using the shell 710 Why eval the output of ssh-agent? 711 Why would I tar a single file? 712 Command to list PostgreSQL user accounts? 713 Set volume from terminal 714 How to print only the duplicate values from a text file? 715 Why is the root directory on a web server put by default in /var/www? 716 On-the-fly monitoring HTTP requests on a network interface? 717 Create a tar archive split into blocks of a maximum size 718 Is Mac OS X UNIX? 719 How do I use cut to separate by multiple whitespace? 720 Chrome: DNS requests with random DNS names: malware? 721 Whats the purpose of the randomart image for user (not host) SSH keys? 722 Does cd . have use? 723 How to check which GPU is active in Linux? 724 How to solve the issue that a Terminal screen is messed up? (usually after a resizing) 725 Convert file contents to lower case 726 How to install dig on CentOS? 727 How does tcp-keepalive work in ssh? 728 How can I keep my SSH sessions from freezing? 729 How to pass parameters to an alias? 730 Long line wrapping in Nano 731 Why can rm remove read-only files? 732 How do you use output redirection in combination with here-documents and cat? 733 How to make tmux count windows starting from 1 instead of 0? 734 How can I find available network interfaces? 735 tar --exclude doesnt exclude. Why? 736 Multiline shell script comments - how does this work? 737 How to copy the partition layout of a whole disk using standard tools 738 What are correct permissions for /tmp ? I unintentionally set it all public recursively 739 Press space to continue 740 What is the difference between ~/.profile and ~/.bash_profile? 741 Whats the difference between eval and exec? 742 Birth is empty on ext4 743 How do you use the command coproc in various shells? 744 How to ssh to remote server using a private key? 745 What is the right file permission for a .pem file to SSH and SCP 746 su options - running command as another user 747 grep on a variable 748 How can I look up a username by id in linux? 749 What technical details should a programmer of a web application consider before making the site public? 750 Which hashing algorithm is best for uniqueness and speed? 751 Where did the notion of one return only come from? 752 Im graduating with a Computer Science degree but I dont feel like I know how to program 753 What is the single most effective thing you did to improve your programming skills? 754 My boss decided to add a person to blame field to every bug report. How can I convince him that its a bad idea? 755 How to respond when you are asked for an estimate? 756 Why is 80 characters the standard limit for code width? 757 So Singletons are bad, then what? 758 Is the use of utf8=✓ preferable to utf8=true? 759 What is the Mars Curiosity Rovers software built in? 760 Pros and Cons of Facebooks React vs. Web Components (Polymer) 761 Why cant the IT industry deliver large, faultless projects quickly as in other industries? 762 Is it OK to have multiple asserts in a single unit test? 763 Ive inherited 200K lines of spaghetti code -- what now? 764 Overcoming slow problem solving due to increased knowledge of what might go wrong 765 My customer wants me to record a video of how I develop his software product 766 How accurate is Business logic should be in a service, not in a model? 767 Should UTF-16 be considered harmful? 768 Im a manager. How can I improve work relationships and communication with programmers? 769 How do I create my own programming language and a compiler for it 770 Should I intentionally break the build when a bug is found in production? 771 Why do game developers prefer Windows? 772 What does stage mean in git? 773 Why is Global State so Evil? 774 Why isnt Java used for modern web application development? 775 I dont program in my spare time. Does that make me a bad developer? 776 Im doing 90% maintenance and 10% development, is this normal? 777 Should I keep my GitHub forked repositories around forever? 778 How would you know if youve written readable and easily maintainable code? 779 How should I behave as a developer in a project thats headed for failure? 780 What is negative code? 781 Should you write your back-end as an API? 782 Is 4-5 years the “Midlife Crisis” for a programming career? 783 Why do business analysts and project managers get higher salaries than programmers? 784 Why are there no PUT and DELETE methods on HTML forms? 785 When should you call yourself a senior developer? 786 What software programming languages were used by the Soviet Unions space program? 787 When is a BIG Rewrite the answer? 788 Why are shortcuts like x += y considered good practice? 789 Should curly braces appear on their own line? 790 Im a Subversion geek, why should I consider or not consider Mercurial or Git or any other DVCS? 791 Should I return from a function early or use an if statement? 792 How Can I Know Whether I Am a Good Programmer? 793 Why does everyone use Git in a centralized manner? 794 What does SVN do better than Git? 795 Is there any reason to use the var keyword in ES6? 796 Grokking Java culture - why are things so heavy? What does it optimize for? 797 Do I need to use an interface when only one class will ever implement it? 798 Should package names be singular or plural? 799 Are #regions an antipattern or code smell? 800 Why are people making tables with divs? 801 Why dont all companies buy developers the best hardware? 802 Does using == in JavaScript ever make sense? 803 How do you know youre writing good code? 804 Leaving intentional bugs in code for testers to find 805 Why have private fields, isnt protected enough? 806 Aggregation vs Composition 807 Should we avoid object creation in Java? 808 Choosing between Single or multiple projects in a git repository? 809 How do you tell if advice from a senior developer is bad? 810 Why squash git commits for pull requests? 811 How to write a very basic compiler 812 What does the Spring framework do? Should I use it? Why or why not? 813 How do you unit test private methods? 814 How are globals any different from a database? 815 How can I deal with the cargo-cult programming attitude? 816 Perks for new programmers 817 Is premature optimization really the root of all evil? 818 Can I use GPL software in a commercial application 819 If immutable objects are good, why do people keep creating mutable objects? 820 What is the difference between writing test cases for BDD and TDD? 821 Whats wrong with comments that explain complex code? 822 What should every programmer know? 823 Why do dynamic languages make it more difficult to maintain large codebases? 824 Project is nearly done, but procedural spaghetti code. Do I rewrite or just keep trying to ship it? 825 Should images be stored in a git repository? 826 Why was Tanenbaum wrong in the Tanenbaum-Torvalds debates? 827 Torvalds quote about good programmer 828 Will high reputation in Stack Overflow help to get a good job? 829 How can a code editor effectively hint at code nesting level - without using indentation? 830 Why do many exception messages not contain useful details? 831 Why do ads for s/w engineers always say they offer a fast-paced environment? 832 Why do we need private variables? 833 Is it wrong to use a boolean parameter to determine behavior? 834 Python file naming convention? 835 Why do people hesitate to use Python 3? 836 Why shouldnt I use the repository pattern with Entity Framework? 837 New developer cant keep up with branch merges 838 Are `break` and `continue` bad programming practices? 839 Why use a database instead of just saving your data to disk? 840 Is it a bad practice to store large files (10 MB) in a database? 841 Strategy for keeping secret info such as API keys out of source control? 842 Is it normal to spend as much, if not more, time writing tests than actual code? 843 Is there a name for the (anti- ) pattern of passing parameters that will only be used several levels deep in the call chain? 844 Why is naming a tables Primary Key column Id considered bad practice? 845 How much should I be using let vs const in ES6? 846 New Team Lead - How to deal with a resentful former peer 847 How do I prevent Scrum from turning great developers into average developers? 848 Why do we need so many classes in design patterns? 849 AGPL - what you can do and what you cant 850 Is it good practice to always have an autoincrement integer primary key? 851 Why arent more desktop apps written with Qt? 852 Whats the canonical retort to its open source, submit a patch? 853 What is MVC, really? 854 How can one manage thousands of IF...THEN...ELSE rules? 855 Never do in code what you can get the SQL server to do well for you - Is this a recipe for a bad design? 856 What exactly makes the Haskell type system so revered (vs say, Java)? 857 When do you use float and when do you use double 858 Do we really need OO languages to manage software complexity? 859 My boss asks me to stop writing small functions and do everything in the same loop 860 Why doesnt HTTP have POST redirect? 861 Is it bad practice to use