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Rename file extension '.andnav' to '.tile' for all files/directories under current directory tree | find . -name "*.andnav" -exec rename -v 's/\.andnav$/\.tile/i' {} \; |
Get from file 'File1.txt' strings starting with 'Q', extract only part of them following after '=' sign, and print which ones are not found in 'File2.txt' | grep ^Q File1.txt | cut -d= -f2- | sort | comm -23 - <(sort File2.txt) |
delete all the files in the current folder | find . -print0 | xargs -0 rm |
Extract the contents of rpm "php-5.1.4-1.esp1.x86_64.rpm" | rpm2cpio php-5.1.4-1.esp1.x86_64.rpm | cpio -idmv |
Find all build* directories under /var/www/html/ and reverse sort them | find /var/www/html/ -type d -name "build*" | sort -r |
Write "\n/usr/local/boost_1_54_0/stage/lib" to standard output and append to "/etc/ld.so.conf" | echo -e "\n/usr/local/boost_1_54_0/stage/lib" | sudo tee -a /etc/ld.so.conf |
Remove files in the current directory tree whose names match pattern "file?" | find . -name "file?" -exec rm -vf {} \; |
Display the content of YourFile.txt, waiting for user input at each page. | cat YourFile.txt | more |
Print the contents of "file" with " | " appended to each line | echo `sed -e 's/$/\ |\ /g' file` |
Find all regular files with case insensitive pattern '*$1*' under current directory tree and execute a command given by $2 with each of those files as arguments | find . -type f -iname '*'"${1:-}"'*' -exec ${2:-file} {} \; |
display long listing of all files in the current directory whose size is 24 or 25 bytes (doesnt display inode information) . | find . -size -26c -size +23c -exec ls -l '{}' \; |
Read one character from standard input into variable "REPLY" | read -n 1 -r |
Recursively copy all files and directories matching "*ela*L1*TE*" in localhost's directory /tdggendska10/vig-preview-dmz-prod/docs/sbo/pdf/ to /var/www/html/sbo/2010/teacher/ela/level1 on localhost connecting as ssh user "dalvarado", in batch mode (no prompt for passwords) preserving file permissions and timestamps, and without displaying progress information. | scp -Bpqr /tdggendska10/vig-preview-dmz-prod/docs/sbo/pdf/*ela*L1*TE* dalvarado@localhost:/var/www/html/sbo/2010/teacher/ela/level1 |
Print mount point of the file system containing $filename. | df "$filename" | awk 'NR==1 {next} {print $6; exit}' |
Search for all directories named foo, FOO, or any other combination of uppercase and lowercase characters beneath the current directory. | find . -iname foo -type d |
Locating large files in /home/ for 'cleaning' | find /home -type f -size +100M -delete |
Runs programs and prints formatted summary of system resource usage. | \time -f "%E real,%U user,%s sys" ls -Fs |
Shows status of a shell option 'nullglob'. | shopt nullglob |
Compare the contents of gzip-ompressed files "file1" and "file2" | diff <(zcat file1.gz) <(zcat file2.gz) |
delete all the normal files in the current folder and do not delete those in the subfolders | find . -maxdepth 1 -type f -delete |
Add variable TESTVAR with value "bbb" to a temporary environment, and search for TESTVAR in all variables and their values in the resulting environment. | TESTVAR=bbb env | fgrep TESTVAR |
find all js files which path neither ./dir1 nor ./dir2 | find . -name '*.js' -not \( -path "./dir1" -o -path "./dir2/*" \) |
Print numbers from 1 to 30 with equalized 0 padding | seq -w 30 |
Find files/directories with inode number '212042' under '/var' directory tree without traversing other devices/partitions | find -x /var -inum 212042 |
Print history with the first field removed | history | awk '{sub; sub; print}' |
Sort file.txt ignoring the last 10 characters of each line. | sort file.txt | rev | uniq -f 10 | rev |
find all the normal/regular files in the folder "pathfolder" excluding all hidden files and display the count | find pathfolder -maxdepth 1 -type f -not -path '*/\.*' | wc -l |
Find all Makefile's in the current directory tree and print the line 235 of each of them | find . -type f -name Makefile -print -exec sed -n '235p' {} \; |
Prints long listing of content in the current folder with C-style escapes for nongraphic characters | ls -lb |
Delete all files/directories with '.old' extension under current directory tree | find . -name “*.old” -delete |
Synchronize "/path/to/dir_b" with files in "/path/to/dir_a/" if the files are newer | rsync -rtuv /path/to/dir_a/* /path/to/dir_b |
find all text files in the current directory | find . -name "*.txt" -print |
Find all regular files on the system whose size is greater than 20000k | find / -type f -size +20000k |
Find files in the current directory tree whose names begin with "file" and whose size is 0, and remove them | find . -name 'file*' -size 0 -print0 | xargs -0 rm |
Display a long listing of the files/directories with human readable sizes under '/var' directory tree which are bigger than 10MB | find /var/ -size +10M -exec ls -lh {} \; |
display all the files in the current folder for the files which have been accessed in the last 24 hours | find . -type f -atime -1 |
Execute "cd /some/directory/myprogram" in the background on target machine "user@target" and write standard output and standard error to foo.out and foo.err | ssh user@target "cd /some/directory; nohup myprogram > foo.out 2> foo.err < /dev/null" |
Find regular files under / that contain "stringtofind" and clear out their contents | find / -maxdepth 1 -xdev -type f -exec grep -li "stringtofind" {} + | parallel sed "'/./d'" '{}' |
Reports time consumed by command 'sleep 1' to the file time.txt together with command error output. | { time sleep 1 ; } 2> time.txt |
Find all files/directories with '.bar' extension in maximum 2 levels down the current directory | find . -name *.bar -maxdepth 2 -print |
Recursively search for all files with names ending with "_test.rb", renaming them to end with "_spec.rb". | find . -name "*_test.rb" | xargs rename s/_test/_spec/ |
Find and remove multiple *.txt files | find . -type f -name "*.txt" -exec rm -f {} \; |
display the contents of all the regular files in the current folder and save the output to out.txt | find . -type f -exec cat {} \; > out.txt |
find a file in current folder and show all errors apart from permission denied | find /. -name 'toBeSearched.file' 2>&1 | grep -v 'Permission denied' |
Find all lines matching "$USER" in "file" and number the output | grep $USER file |nl |
Gets MAC address of eth0 network interface. | ifconfig eth0 | grep HWaddr | cut -d ' ' -f 9 |
Invoke a trusted X11 forwarding SSH connection with the server $ssh_server as user $ssh_user | ssh -Y $ssh_user@$ssh_server |
Run two processes, cmd1 whose output is fed as input to cmd2: cmd1 is immune to all SIGHUP signals sent to it, but cmd2 is not. | nohup cmd1 | cmd2 & |
Find all .mp3 files starting from the current directory | find . -type f -iname *.mp3 |
find all the directories with the name "c" in the current folder which are at least 3 levels deep and which are not present in the path "/p/". | find -mindepth 3 -type d -path '*/p/*' -prune -o -name c -print |
change the directory to the last found folder in the directory 'a' | cd `find a |sed '$!d'` |
Print all '-' separated digits in file 'infile' as dot ('.') separated digits | grep -Eo '([0-9]+-){3}[0-9]+' infile | tr - . |
find all the files in the home folder that have not been modified in the last one year | find $HOME -mtime +365 |
Remove file with inode number 31246 | find . -inum 31246 -exec rm [] ';' |
Kill all processes which were executed in background by the current shell. | jobs -p | xargs kill -9 |
Find '*prefs copy' files under /mnt/zip and delete them with confirmation prompt ensuring white space safety | find /mnt/zip -name "*prefs copy" -print0 | xargs -0 -p /bin/rm |
Find all PHP files under current directory that contain only one non-blank line | find . -type f -name '*.php' -exec grep -Hcm2 '[^[:space:]]' {} + | sed -n '/:1$/{s///;p}' |
Print last 10 commands in history with the first 7 characters removed | history 10 | cut -c 8- |
split the file "file" into pieces per 2 lines | split -n2 infile |
Find files in the current directory tree whose names match regular expression "^.*~$\|^.*#$" | find -regex "^.*~$\|^.*#$" |
Search the system for files whose names begin with letters 'a', 'b', or 'c' | find / -name '[a-c]*' |
delete all the files in the current folder which are bigger than 1KB | find . -size +1024 ?print|xargs -i rm \; |
Search the directories matching pattern "/path/to/some/dir/*[0-9]" for level 1 subdirectories | find /path/to/some/dir/*[0-9] -type d -maxdepth 1 |
Copies files 'src/prog.js' and 'images/icon.jpg' with fully-defined path to '/tmp/package' directory. | cp --parents src/prog.js images/icon.jpg /tmp/package |
Compute the mean average of the word count of *.txt files in the home directory | find ~/ -name '*.txt' -print0 | xargs -0 wc -w | awk 'END { print $1/(NR-1) }' |
Get current directory name without full path, ie. the part after the last / | pwd | awk -F / '{print $NF}' |
Find files in the current directory recursively that are not readable by all | find -type f ! -perm -444 |
Recursively change the owner and group of "subdir1" to "user1" | chown user1:user1 -R subdir1 |
Copy all files below the current directory whose names contain "FooBar" to directory foo/bar/ in user's home directory. | find . | grep FooBar | xargs -I{} cp {} ~/foo/bar |
check the type of files in the folder /usr/bin | find /usr/bin | xargs file |
Display all regular files under current directory tree ignoring files in './dir1' and './dir2' directories | find . -type f |sed '/.\/dir[12]\/[^/]*$/d' |
Display the contents of /var/log/syslog one page at a time, pausing for user interaction between each. | more /var/log/syslog |
Remove Mac OS X Desktop Services Store files | find . -name ".DS_Store" -exec rm {} \; |
find all the files which end with ".deb" and display their base name (strip the extension) | find . -name '*.deb' -exec basename {} \; |
Change ownership of "/vol" to the current user | sudo chown `whoami` /vol |
Find files newer than `tmpfile' starting from the current directory | find . -newer tmpfile |
create a backup of all normal/regular files in current folder which have been modified between two dates and create a tar.gz file of this backup | find /path/to/files/ -newermt 20131204 -not -newermt 20131205 -type f -print0 | cpio --create --null --format=ustar | gzip > /tmp/dec-4.tar.gz |
Find all *.css files under /starting/directory and print filenames and the lines matching the regex '\.ExampleClass' from those files | find /starting/directory -type f -name '*.css' | xargs -ti grep '\.ExampleClass' {} |
Find files/directories under current directory that matches the regex /path/to/something[^/]*$ in their paths | find . | grep -qi /path/to/something[^/]*$ |
Print crontabs of all users in system, skipping messages that some users don`t have crontab. | cat /etc/passwd | sed 's/^\:.*$/crontab -u \1 -l 2>\&1/' | sh | grep -v "no crontab for" |
Write "Hello, world" to standard output and to "/tmp/outfile" | echo "Hello, world" | tee /tmp/outfile |
list all running jobs | jobs |
search for files which are writable by both their owner and their group | find . -perm -220 |
move all the files in the current folder to temp folder and search atleast in one subfolder | find . -mindepth 1 -exec mv -t /tmp {} + |
bind word "foobar" to key code "\e[24~" | bind '"\e[24~":"foobar"' |
List ".java" files that have the same contents | md5sum *.java | sort | uniq -d -w32 |
find all files under the /etc/sysconfig directory that were accessed in the last 30 minutes | find /etc/sysconfig -amin -30 |
Save the current working directory with resolved symbolic links to variable "real1" | real1=$(pwd -P) |
Find files in the current directory tree whose pathnames contain "sub" | find ./ | grep "sub" |
Search for the query "filename" in the current directory and any subdirectories | find -iname "filename" |
Print 1 byte from "/dev/urandom" as a signed decimal value and no address radix | od -A n -t d -N 1 /dev/urandom |
Search the current directory tree for symlinks pointing at other symlinks | find . -type l -xtype l |
Case insensitive search using find command in Linux | find . –iname "error" –print find . –iname "error" –print |
Find all the files/directories in the entire filesystem that do not belong to user 'wnj' and are not newer than the file/directory 'ttt' by modification time | find / \! \( -newer ttt -user wnj \) -print |
Set permissions for files in `foldername' and its subdirectories to 644 | find foldername -type f -exec chmod 644 {} ";" |
Find all *.foo files under current directory and print their contents | find . -name '*.foo' -exec cat {} \; |
Display all files in the current directory tree that match "*foo" | tree -P "*foo" |
Print the list of the current directory's subdirectories | find -maxdepth 1 -type d |
Find all directories in current directory without going into sub-directories | find . -type d -maxdepth 1 |
Find all directories under current directory whose names are 33 characters long | find . -type d -name "?????????????????????????????????" |
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