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Split "${fspec}" into 6 files with about equal number of lines each and use prefix "xyzzy." | split --number=l/6 ${fspec} xyzzy. |
List all files/directories under current directory ensuring white space safety | find -print0 | xargs --null |
display all the directories in the folder /path/to/dest except tmp directory | find /path/to/dest -type d \ -print |
Dry run making directories in "/TARGET_FOLDER_ROOT/" for each ".mov" file in the current directory tree | find . -type f -iname \*.mov -printf '%h\n' | sort | uniq | xargs -n 1 -d '\n' -I '{}' echo mkdir -vp "/TARGET_FOLDER_ROOT/{}" |
Find all files/directories under 'my key phrase' directory and redirect the output to mylist.txt | find 'my key phrase' > mylist.txt |
Find files in the /var/log folder which were modified an hour or more ago | find /var/log/ -mmin +60 |
Force remove all files and folders in the physical current working directory | rm -rf "$"/* |
search for all the files in the folder /home/user1 which end with ".bin" | find /home/user1 -name "*.bin" |
Check if *RBENV* variable is defined in tmux session 'sessname' environment. | tmux show-environment -t sessname | grep RBENV |
Find files in the /home/user directory tree changed exactly 10 minutes ago | find /home/user/ -cmin 10 -print |
Rename "www_new" to "www" even if "www" directory exists | mv -T www_new www |
Change all variables containing "gcc.4.2" to containing "gcc64" in the current shell's environment. | source < |
Find all .txt files list & List the first lines of text files | find $HOME/. -name *.txt -exec head -n 1 -v {} \; > report.txt |
search for the file centos in /usr folder | find /usr -iname centos |
Delete all directories under '.cache/chromium/Default/Cache/' directory tree that are bigger than 100MB and are at least 1 level deep | find .cache/chromium/Default/Cache/ -mindepth 1 -type d -size +100M -exec rm -rf {} \; |
Compress "mysqldbbackup.sql" with gzip and email it with subject "MySQL DB" to "[email protected]" | gzip -c mysqldbbackup.sql | uuencode mysqldbbackup.sql.gz | mail -s "MySQL DB" [email protected] |
Creates temporary directory in '/tmp/' folder and saves path to it in 'my_tmp_dir' variable. | my_tmp_dir=$ |
Find regular non-hidden files containing `some text' in their names with hidden directories optimization | find . -type d -path '*/\.*' -prune -o -not -name '.*' -type f -name '*some text*' -print |
Find all files named "something" in the current folder and below and run them through the ls -l command, one by one. | find . -name something -exec ls -l {} \; |
Search the current directory recursively for regular files last accessed more than 2 days ago | find . type -f -atime +2 |
change the permissions of all the regular/normal files to 644 in the folder /home/nobody/public_html | find /home/nobody/public_html -type f -exec chmod 644 {} \; |
Replace all occurrences of edx (case insensitive) with gurukul in all *.css (case insensitive) files under ./cms/djangoapps/contentstore/views directory | find ./cms/djangoapps/contentstore/views -iname *.css | xargs sed -i s/[Ee][Dd][Xx]/gurukul/g |
search for a pattern in all the python files in the current folder. and save the output to a txt file | find . -name "*.py" -type f -exec sh -c 'grep "something" <"$0" >"$0.txt"' {} \; |
set a crontab to create or update the timestamp of "washere2" in the current directory every 30 minutes. | echo "30 * * * * touch $/washere2" | crontab |
Search the entire file hierarchy for all regular files owned by olduser and change their ownership to newuser. | find / -user olduser -type f -exec chown newuser {} \ |
List non-hidden regular files in the current directory tree that were last modified more than 500 days ago | find . -type f -not -name '.*' -mtime +500 -exec ls {} \; |
Find file `hosts' | find /etc -name hosts |
List all files matching regular expression '*foo*' in a human-readable form | find . -name '*foo*' -exec ls -lah {} \; |
change the permission of all the rpm files in the entire file system to 755 | find / -name *.rpm -exec chmod 755 '{}' \; |
Print the list of all regular files from the current directory tree that contain "confirm", case insensitive | find . -type f -exec grep -il confirm {} \; |
Print amount of space available on the file system containing path to the current working directory in megabytes. | df . -B MB | tail -1 | awk {'print $4'} | grep .[0-9]* |
Find all files and directories containing "disc" in their names | find . -name *disc* |
search for the pattern in all the regular/normal files in the entire file system | find / -type f -print0 | xargs -0 grep -i pattern |
Add a cron job to existing list, without removing existing ones, ro tun "scripty.sh" at 2:01 am, 3rd day of april (4th month), if that day happens to be a friday (5th day of the week starting with sunday=0). | cat <(crontab -l) <(echo "1 2 3 4 5 scripty.sh") | crontab - |
Change directory to the alphabetically last path under the current directory | cd "$(find . -print0 | sort -z | tr '\0' '\n' | tail -1)" |
Set variable "MAVEN_DEBUG_OPTS" to "-Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000" on Windows machines | set MAVEN_DEBUG_OPTS=-Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 |
display all the files in current folder | find . |
find all the regular files in the current directory which do not have a read permission | find -type f ! -perm -444 |
Removes strings with pattern from file 'filename'. | grep -v "pattern" filename > filename2; mv filename2 filename |
Delete all files named 'Waldo' under ~/Books directory tree where '~' expands to user's home directory | find ~/Books -type f -name Waldo -exec rm {} \; |
find all "tar.gz" files in a folder and sort them according to the name and display the first 2 files | (find $DIR/tmp/daily/ -name *.tar.gz | sort -n | head -2 |
Print the last mounted drive | mount | tail -1 | sed 's/ on .* ]*)$//' |
Replace "_" with newlines in "Testing\r\nTested_Hello_World" and display the named characters | echo -e "Testing\r\nTested_Hello_World" | awk -v RS="_" '{ print $0; }' | od -a |
display a long listing of all the files in the current folder which have been modified in the last 24 hours | find . -mtime -1 -ls |
Delete all files in the /TBD directory that were modified more than 1 day ago | find /TBD/* -mtime +1 -exec rm -rf {} \; |
Unset IFS and read standard input into variable "file" until a null character is found without allowing backslashes to escape characters | IFS= read -d $'\0' -r file |
removes last N lines from file.txt | head --lines=-N file.txt |
Shows MAC address of network interface eth0. | ifconfig eth0 | grep HWaddr |cut -dH -f2|cut -d\ -f2 |
count all the regular files that are present in a directory | find . -type f | wc -l |
This will remove all files (type f) modified longer than 14 days ago under /root/Maildir/ recursively from there and deeper (mindepth 1 | find /root/Maildir/ -mindepth 1 -type f -mtime +14 | xargs rm |
Find the passwd file in the current directory and one level down | find -maxdepth 2 -name passwd |
Print all directories under $root appending a : at the end of each path without descending into directories matching the pattern .[a-z]* | find "$root" -name ".[a-z]*" -prune -o -type d -printf '%p:' |
Find all files/directories that belong to the group 'audio' under '/dev' directory tree | find /dev -group audio |
Find in the current direcoty whose suffix is .tmp , find will not serach recursively limit of find is 2 subdirectory . | find . -maxdepth 2 -name '*.tmp' |
Find files with 002 permission under /tmp and print them with the string 'Found world write permissions:' printed as the first line of output or print 'No world writable found' if no such files were found | find /tmp -type f -perm -002 | awk -- '1{print "Found world write permissions:";print};END{ifprint "No world writable found."}' |
display all the files in the current folder which start with either "fileA_" or "fileB_" | find . -name 'fileA_*' -o -name 'fileB_*' |
Pass "y" to all the prompts for the command "execute_command" | yes | execute_command |
List all environment variables whose name or value contains current user's login name. | env | sed -n /"$USERNAME"/p |
Find all xx* files/directories excluding 'xxx' files/directories under your home directory | find ~ -name 'xx*' -and -not -name 'xxx' |
As root, edit the cron job list of user "apache" using the editor specified by EDITOR environment variable, or default /usr/bin/editor if this variable is not set. | sudo crontab -e -u apache |
delete all files that have the extension "bam" in current directory | find . -name "*.bam" | xargs rm |
Find all $tofind* files/directories under $parentdir | find $parentdir -name $tofind* |
Limits the number of results from grep to 2 lines | grep -o '1.' yourfile | head -n2 |
change the ownership of all directories in the current folder | find . -type d -exec chown username {} \; |
search for files cart4 or cart5 or cart6 in the folder junk which is in home folder and delete it. | find ~/junk -name 'cart[4-6]' -exec rm {} \; |
Print git branch currently checked out in a working directory. | git branch --no-color | grep -E '^\*' | cut -d ' ' -f 2 |
split $SOURCE_FILE" into pieces per 100 lines | split -l 100 "$SOURCE_FILE" |
Search in current directory downwards all files whose size is greater than 10 bytes . | find . -size +10c -print |
Recursively and forcibly removes $TMP folder with all content. | rm -fR "${TMP}/"; |
Find all files under the current directory whose pathnames do not end with "Video", ignoring the case | find . -maxdepth 1 -not -iwholename '*Video' |
Output line number and lines 200000000 through 200000005 from the infinite input of "y" | yes | sed -n '200000000,${=;p};200000005q' |
delete all instances of the file "bad" if its size is 0 bytes | find . -name bad -empty -delete |
Find files and directories whose owner is daniel | find . -user daniel |
Archive "/home/abc/*" to "/mnt/windowsabc" with human readable output | rsync -avh /home/abc/* /mnt/windowsabc |
List all files under current directory matching the regex '.*$' | find -E . -type f -regex '.*$' -exec ls {} \; |
List the files in the /etc directory tree containing text "old1.old2.co.com" | find /etc -type f -print | xargs grep -il old1\.old2\.co\.com |
find all text files in current folder and trim the extra spaces in all lines in these files and save it to the original file | find . -type f -name "*.txt" -exec sh -c 'for i;do sed 's/[[:space:]]*$//' "$i">/tmp/.$$ && mv /tmp/.$$ "$i";done' arg0 {} + |
Output the variable "filename" without the last dot-separated section. | echo ${filename%.*} |
Remove empty folder, and skip error message if one is not empty. | rmdir --ignore-fail-on-non-empty newBaseDir/Data/NewDataCopy |
Find all files, folders, symlinks, etc matching pattern "*.php" in the current directory recursively | find . -name \*.php |
Read a line from standard input into the variable "yn" using the first argument as the prompt | read -p "$1 " yn |
bind word "pwd\n" to key code "\e[24~" | bind '"\e[24~":"pwd\n"' |
Convert the contents of 'var1' variable to lowercase | var1=`echo $var1 | tr '[A-Z]' '[a-z]'` |
find all the files in the file system which have not been modified in the last 100*24 hours | find / -mtime +100 -print |
Search for "vid=123" in all compressed files found under "/my_home" matching "*log.20140226*" | zcat `find /my_home -name '*log.20140226*'`|grep 'vid=123' |
Remove all .txt files in and below the current directory | find . -name "*.txt" | xargs rm |
Find all files in the current directory and its sub-directories that have been modified sometime in the last 24 hours. | find . -mtime -1 -prin |
Creates file with random 10-byte size content. | shred -s 10 - > my-file |
Sets 'extglob' shell variable. | shopt -s extglob |
Look for any instance of "ds1337" in the modules.alias file matching current kernel release | grep ds1337 /lib/modules/`uname -r`/modules.alias |
set alias "your_env" for command 'source ~/scripts/your_env.sh' | alias your_env='source ~/scripts/your_env.sh' |
change the extension of all the ".lst" files in the current folder to "a.lst" | find -name ‘*.lst’ -exec rename .lst a.lst {} \; |
Search for 'It took' in all $srch1* (case insensitive) files under current directory and run the sed script 'N;s/(.*)\n(.*)/\2 \1/' on the output | find . -iname "$srch1*" -exec grep "It took" {} \; -print |sed -r 'N;s/(.*)\n(.*)/\2 \1/' |
Locate OGG files under the home directory smaller than 100 megabytes | find $HOME -iname '*.ogg' -type f -size -100M |
find all the text files in the current directory which have been modified in the last 4 days and not today and copy them to another folder | find . -name "*.txt" -type f -daystart -mtime -4 -mtime +0|xargs -i cp {} /home/ozuma/tmp |
copy a files from one folder to all the folder in the /raid which have an extension local_sd_customize. | find /raid -type d -name ".local_sd_customize" -ok cp /raid/04d/MCAD-apps/I_Custom/SD_custom/site_sd_customize/user_filer_project_dirs {} \; |
Print the current default full path of the "java" executable | echo "The current default java is $(readlink --canonicalize `which java`)" |
Recursively copy all files and directories in "demo" excluding ".git" to "demo_bkp" | find demo -depth -name .git -prune -o -print0 | cpio -0pdv --quiet demo_bkp |
find all the files in the current folder and create a backup of it in floppy | find . -depth -print | cpio -ov > /dev/fd0 |
find all the html files that are acces in the last 24 hours in the current folder | find . -mtime 1 -name "*.html" -print |
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