nl_command
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Find all CDC* files under current directory that were accessed less than 1 day ago and delete the first and last lines from those files | find . -type f -name "CDC*" -ctime -1 -exec sed -i'' -e '1d' -e '$d' '{}' \; |
Find all files that were last accessed more than 7 days ago under /home | find /home -atime +7 |
Find the largest original ".gz" file in the current directory tree | find . -name '*.gz' | xargs gzip -l | tail -n +2 | head -n -1 | sort -k 2 | tail -n 1 | awk '{print $NF}' |
Finds all files like "mylog*.log" newer than $2 and archives them with bzip2. | find . -type f -ctime -$2 -name "mylog*.log" | xargs bzip2 |
Remove all files in the $backup_path directory recursively that were last modified more than 30 days ago | find $backup_path/* -mtime +30 -exec rm {} \; |
compare each C header file in or below the current directory with the file /tmp/master | find . -name '*.h' -execdir diff -u '{}' /tmp/master ';' |
Find all .jpg files in the current directory and below. | find . -name “*.jpg” |
Find all files in /dir1 and print only the filenames | find ./dir1 -type f -exec basename {} \; |
Prints groups list that user 'el' belongs to. | groups el //see that el is part of www-data |
Search the current directory recursively for files containing "needle text" | find . -type f -print0 | xargs -0 grep -IZl . | xargs -0 grep "needle text" |
find all files with pattern` '*.mp3' | find / -name *.mp3 |
Find all regular files in /usr/bin modified less than within the last 10 days | find /usr/bin -type f -mtime -10 |
Find all files/directories with '.log' extension that belong to the group 'adm' under '/var/log' directory tree | find /var/log -group adm -name "*.log" |
get the jenkins user access | sudo su - jenkins |
when using vi-insert keymap bind command "\C-v{}\ei" to key "{" | bind -m vi-insert '"{" "\C-v{}\ei"' |
Find the string 'joomla' case insensitively in all the php and html files under current directory tree and display the matched lines along with the file names and line numbers | find . \ -print0 | xargs -0 grep -Hin "joomla" |
search for all the files which have not been modified in the last 6 months (180 days) in current folder and display the total disk usage of them | find . -mtime +180 -exec du -ks {} \; | cut -f1 | awk '{total=total+$1}END{print total/1024}' |
Search the current directory tree for directories | find "$PWD" -type d |
calculate the disk usage for all the files which have been modified in the last 24 hours in ~/tmp folder and display the file sizes | find ~/tmp -mtime 0 -exec du -ks {} \; | cut -f1 |
Find all *.ext files/directories under current directory and print their path and parent directory path | find /path -type f -name "*.ext" -printf "%p:%h\n" |
Find all files under /home/feeds/data without descending into *def/incoming* and *456/incoming* paths | find /home/feeds/data -type f -not -path "*def/incoming*" -not -path "*456/incoming*" |
Print a line of 100 '=' characters | printf %100s |tr " " "=" |
Save 'foo' into variable 'bar' in ksh | echo foo | read bar |
Remove all files with a txt extension under current directory | find . -type f -name "*.txt" | xargs -i ksh -c "echo deleting {}; rm {}" |
Set the 'pipefail' shell variable causing bash to return true only if all commands in a pipeline return true. | set -o pipefail |
display the count of all the files in the current folder | find . -print | wc -l |
Compress all *.img files using bzip2 | find ./ -name "*.img" -exec bzip2 -v {} \; |
Find files/directories under /users/tom that matches both the pattern "*.pl" and "*.pm" | find /users/tom -name "*.pl" -name "*.pm" |
Find all files/directories under current directory tree with '.old' extension | find . -name ”*.old” -print |
Search for 'some string' in all *js files under current directory and show the matched lines with line numbers | find . -name '*js' | grep -n 'some string' |
Move all files from the `sourceDir' directory tree to the `destDir' directory | find sourceDir -mindepth 1 -exec mv "{}" --target-directory=destDir \; |
Find all files under current directory and print only the filenames | find . -type f -execdir echo '{}' ';' |
Find all files whose names end with "macs" in and below the current directory | find -name '*macs' |
Search the ~ and `Music' directory trees for .mp3 files | find ~ Music -name '*.mp3' |
List all non-hidden files in ~/junk | find ~/junk -name "*" -exec ls -l {} \; |
Find all .gz archives in the /path/to/dir directory tree | find /path/to/dir -name "*.gz" -type f |
search for a file "file" in current folder and display all instances of this file | find -name file -print |
Find all files/directories named 'testfile.txt' under current directory tree | find . -name testfile.txt |
download content from "http://search.twitter.com/search.json?q=node.js" and format it as json | curl -s http://search.twitter.com/search.json?q=node.js | json |
Print the top 10 commands with their use count | history | awk '{print $2}' | awk 'BEGIN {FS="|"}{print $1}' | sort | uniq -c | sort -nr | head |
Rename file ~/junk/cart1 to ~/junk/A | find ~/junk -name 'cart1' -exec mv {} ~/junk/A \; |
Search the /path directory tree for files missing g+w or o+w bits | find /path ! -perm -022 |
Sleep until tomorrow at 21:30 | sleep $(($0)) |
Find all files/directories under current /export/home/someone directory and upload them to ftp://somehost/tmp/ | find /export/home/someone -exec curl -u someone:password -vT {} ftp://somehost/tmp/ |
Print the number of packets sent, received, and the percentage lost for each ping request to "google.com" | ping google.com | awk '{ sent=NR-1; received+=/^.*(time=.+ ms).*$/; loss=0; } { if (sent>0) loss=100-((received/sent)*100) } { printf "sent:%d received:%d loss:%d%%\n", sent, received, loss }' |
Gives longest '*.php' files with line count first, and excludes directories with "libs", "tmp", "tests" and "vendor" in their paths. | find . -name '*.php' | xargs wc -l | sort -nr | egrep -v "libs|tmp|tests|vendor" | less |
find httpd.conf file in /etc directory | find /etc -name "httpd.conf" |
Find all files under /path/to/base/dir and change their permission to 644 | chmod 644 $ |
Find all of the hidden files in the current directory and its sub-directories. | find . -type f -name ".* |
Sort tab separated file "file" using a version sort for field 6 and a numeric sort for field 7 | sort -t$'\t' -k6V -k7n file |
Print three lines of "some line " followed by a random number | seq -f 'some line %g' 500 | nl | sort -R | cut -f2- | head -3 |
SSH into "111.222.333.444" as user "tunneluser" without a pseudo-terminal and without interpreting bash variables locally | ssh -T [email protected] <<'EOI' |
search for text files in the current folder which have write access to others | find . -type f \ |
delete all the directories empty directories in the current folder | find . -type d -empty -delete |
Simulate a full login | su - |
Removes resursively all files and folders named "Thumbs.db", ignoring case distincts. | find . -iname "Thumbs.db" -print0 | xargs -0 rm -rf |
Counts total lines in PHP and JS files. | find . -name '*.js' -or -name '*.php' | xargs wc -l | grep 'total' | awk '{ SUM += $1; print $1} END { print "Total text lines in PHP and JS",SUM }' |
Mount partition with label "WHITE" on "/mnt/WHITE" with read and write permission | mount -L WHITE /mnt/WHITE -o rw |
Compare "fastcgi_params" and "fastcgi.conf" line by line, output 3 lines of unified context, and print the C function the change is in | diff -up fastcgi_params fastcgi.conf |
Force delete all jpg files in current directory which are less than 50KB and do not search in the sub directories | find . -maxdepth 1 -name "*.jpg" -size -50k | xargs rm -f |
Execute python script "test.py" with "LD_PRELOAD=./linebufferedstdout.so" and write the output to console and append to "test.out" | LD_PRELOAD=./linebufferedstdout.so python test.py | tee -a test.out |
Unzip all ".gz" files in the current directory tree to their respective directories | find . -name "*.gz" -execdir gunzip '{}' \; |
Search the current directory tree for files matching regular expression '.*myfile[0-9][0-9]?' | find . -regex '.*myfile[0-9][0-9]?' |
Find all files under current directory that were modified in the last 24 hours and also include the files that were modified in less than 1 day ago | find -mtime +0 |
Archive "/var/www/test/" to "/var/www/test" on host "231.210.24.48" as user "ubuntu" via ssh using identity file "/home/test/pkey_new.pem" | rsync -rave "ssh -i /home/test/pkey_new.pem" /var/www/test/ [email protected]:/var/www/test |
Modify interval to 0.1 seconds for the watch command | watch -n 0.1 |
Enable history and history expansion within a script | set -o history -o histexpand |
remote copy all text files from one location to another | find . -name '*.txt' -exec rsync -R {} path/to/dext \; |
Find all broken symlinks under current directory | find . -type l -exec sh -c "file -b {} | grep -q ^broken" \; -print |
Rank the usage of libraries for a set of tools "/bin/* /usr/bin/* ..." | ldd /bin/* /usr/bin/* ... | sed -e '/^[^\t]/ d; s/^\t\\?\ (.*/\2/g' | sort | uniq -c |
delete all the "wmv" "wma" files in the currnet folder, | find . \( -name '*.wmv' -o -name '*.wma' \) -exec rm {} \; |
Print the list of files and directories of the current directory | find . ! -name . -prune |
Find files patching "pattern" | find . -name "pattern" -print |
Print the file names along with their sizes under current directory tree | find . -type f -printf "%f %s\n" |
change the permissions of all regular/normal files in the file system | chmod 640 `find ./ -type f -print` |
print all active readline keybindings | bind -P | grep --fixed-strings ' can be found on ' | perl -pe 's/(*)\\C/\1Ctrl/g;s/(*)\\e/\1Esc,/g' |
find all files in the current folder which have not been changed in the last 48 hours | find ./ -daystart -ctime +2 |
Calculate the md5sum of the executable file of command 'c++' | md5sum `which c++` |
List subdirectories in the current directory | find . -maxdepth 1 -type d -exec ls -ld "{}" \; |
Find files under /etc/apache-perl that are modified more recently than /etc/apache-perl/httpd.conf | find /etc/apache-perl -newer /etc/apache-perl/httpd.conf |
Search for files greater than 20MB in the entire file system, sort them according to size in ascending order and display the path and file size | find / -type f -size +20M -exec ls -lh {} \; 2> /dev/null | awk '{ print $NF ": " $5 }' | sort -nk 2,2 |
List *.txt files under current directory that have 'mystring' in their name | find . -name *.txt | egrep mystring |
Change file owner and group of "/path/to/yourapp" to root and print a diagnostic | chown -v root:root /path/to/yourapp |
Prints calendar for a current month. | cal |
Recursively search through all files in all directories for any lines containing "pattern" and whose second word is not "Binary". | grep -Ri "pattern" * | awk '{if($1 != "Binary") print $0}' |
delete all text files in the home folder after user confirmation | find $HOME/. -name "*.txt" -ok rm {} \; |
Sets shell option 'nounset'. | shopt -s -o nounset |
Remove the files or directories 'bin/node', 'bin/node-waf', 'include/node', 'lib/node', 'lib/pkgconfig/nodejs.pc' and 'share/man/man1/node' with superuser privilege | sudo rm -rf bin/node bin/node-waf include/node lib/node lib/pkgconfig/nodejs.pc share/man/man1/node |
Print the names of any differing files in directories "dir1/" and "dir2/" | diff --brief --recursive dir1/ dir2/ |
Print file system disk space usage of the current directory's file system | df . |
Append "<br/>" to the end of each line in "1\n2\n3" | echo -e "1\n2\n3" | sed 's/.*$/&<br\/>/' |
Find all foo.mp4 files in the current directory tree and print the pathnames of their parent directories | find . -name foo.mp4 -exec dirname {} \; |
Search for the string 'device' in all regular files in the entire filesystem | find / -type f -print | xargs grep "device" |
search for the files with the name "temp" and which have not been accessed in the last 7*24 hours in the /usr folder | find /usr -name temp -atime +7 -print |
Page through the contents of BIG_FILE.txt, letting the user move around with the arrow keys, the Q key quits. | cat BIG_FILE.txt | less |
find all files the current folder which have not been accessed in the last 7 days and which are bigger than 20KB | find . -atime +7 -size +20480 -print |
Find and clear UTF-8 files with BOM | find . -type f -exec sed '1s/^\xEF\xBB\xBF//' -i.bak {} \; -exec rm {}.bak \; |
Find directories in the current directory tree that were modified within the last 24 hours and move them to /path/to/target-dir | find . -type d -mtime -0 -print0 | xargs -0 mv -t /path/to/target-dir |
Print a list of all files/directories under current directory in myfile.sh file | find . -print >myfile.sh |
Remove trailing white spaces and replace CRLF with LF in all files under current directory ignoring .git and .svn directories | find . -not \ -type f -exec sed -i 's/[:space:]+$//' \{} \; -exec sed -i 's/\r\n$/\n/' \{} \; |
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