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Find all files/directories with '.log' extension whose names start with 'app-', have been modified in the last 5 minutes and show the first one found | find /var/log/crashes -name app-\*\.log -mmin -5 -print | head -n 1 |
Use 'top' to monitor the newest instance of ProgramName. | top -p "$" |
Display the files/directories under current directory tree matching the regex '/$prefix$ypatt' where $prefix and $ypatt expands in the current shell | find . -print | grep "/${prefix}${ypatt}" |
Search the entire system for SUID or SGID files | find / -path /proc -prune -o -type f -perm +6000 -ls |
find all files in the current folder which are of size 0 bytes. | find . -type f -empty |
change cgi files to mode 755 under htdocs or cgi-bin directories | find htdocs cgi-bin -name "*.cgi" -type f -exec chmod 755 {} \; |
find all the files in the current directory and print them excluding those that have the name SCCS. | find . -print -o -name SCCS -prune |
Find all the files recursively in directories or files taken from the glob pattern /tmp/test/* that have been modified today | find /tmp/test/* -mtime -0 |
Find all regular files in the current directory tree ignoring GIT and SVN directories | find . \( -type d -regex '^.*/\.\$' -prune -false \) -o -type f -print0 |
Show all previously typed shell commands, waiting for user interaction after each page of output. | history | more |
create directory /etc/cron.15sec | mkdir /etc/cron.15sec |
Print equal lines in compressed files "number.txt" and "xxx.txt" | comm -12 < < |
List all leaf directories under current directory | for dir in $; do [[ ! $prev =~ $dir ]] && echo "$dir" ; prev="$dir"; done |
search for mp3 files in the folder /mp3collection which are smaller than 5MB | find /mp3collection -name '*.mp3' -size -5000k |
Change the permissions of every directory in the current directory and all files and directories within them to 700 | find . -maxdepth 1 -type d -exec chmod -R 700 {} \; |
find the file "dateiname" in the entire file system | find / -iname "Dateiname" |
Delete all '-' character from $1 and save the resultant string to variable 'COLUMN' | COLUMN=`echo $1 | tr -d -` |
find all the text files in the current folder starting with "somefiles-" | find . -name "somefiles-*-.txt" -type f |
SSH login in 'middle.example.org' via port 2222 as user 'deviceuser' using a private key file './device_id.pem' | ssh -i ./device_id.pem [email protected]:2222 |
Print file name without extension assuming there is only one dot in the file name. | echo "$FILE" | cut -d'.' -f1 |
Print all files on the system owned by group `name_of_group' | find / -group name_of_group |
Print flow of random data, showing all non-printing characters | cat -v /dev/urandom |
Display smbios/DMI information, pausing for user interaction between pages of output. | dmidecode | more |
extract /path/to/my_archive.tar.xz to /path/to/extract and preserve permissions. | tar xpvf /path/to/my_archive.tar.xz -C /path/to/extract |
Prints long listing of content in a root folder, including hidden files, with human-readable sizes, and stores output to '/root/test.out' file. | sudo ls -hal /root/ | sudo tee /root/test.out > /dev/null |
Look for SUID files and directories | find / -perm +4000 |
Search for 'keyword' in all javascript files under current directory tree excluding all paths that includes the directory 'node_modules' | find ./ -not -path "*/node_modules/*" -name "*.js" | xargs grep keyword |
Execute "ps -mo pid,tid,%cpu,psr -p \`pgrep BINARY-NAME\`" every half second displayed with no title and highlighting the differences | watch -tdn0.5 ps -mo pid,tid,%cpu,psr -p \`pgrep BINARY-NAME\` |
find all the files ending with ".sh" in the folder /dir excluding those wth the names foo and bar. | find /dir \ -o \ -o -name "*.sh" -print |
Verbosely compresses all files on fifth and sixth depth level keeping original files in place. | bzip2 -kv */*/*/*/*/* |
Find all files whose names end with "macs" in and below the current directory | find -name '*macs' |
Recursively finds all files and prints all strings with 'text-to-find-here' from that files, preceding matched string with filename. | find ./ -type f -exec grep -H 'text-to-find-here' {} \; |
Mount image "test" to loop device "/dev/loop0" | sudo mount -o loop /dev/loop0 test |
Find all files under current directory whose status was changed less than 3 days ago, sort them and show last 5 lines of output with only their paths | find . -type f -ctime -3 -printf "%C@ %p\n" | sort | tail -n 5 | sed 's/[^ ]* \(.*\)/\1/' |
display all the file in the folder /home/david/ which start with the word "index" | find /home/david -iname 'index*' |
Compare files in "/tmp/dir1" and "/tmp/dir2", treat absent files as empty and all files as text, and print 3 lines of unified context | diff -Naur dir1/ dir2 |
list regular files under the user's home directory that are over 100KB and have not been accessed in over 30 days. | find $HOME -type f -atime +30 -size 100k |
display a long list of all the files that are bigger than 10KB in current folder | find . -size +10k -exec ls -l {} \; |
Move each of the 'm?' directories in current directory to another directory whose name is constituted by appending .mbox to each directory name and create a directory named Messages in this directory then move all *.emlx files into this directory | find . -name 'm?' -type d -exec mv '{}' '{}.mbox' ';' -exec mkdir '{}.mbox/Messages' ';' -exec sh -c 'mv {}.mbox/*.emlx {}.mbox/Messages' ';' |
Search for files that are at least 100MB | find / -size +100M |
Print the names of all regular files in the current directory tree | find . -type f -exec echo {} \; |
using exec in find command to dispaly the searched files | find . ... -exec cat {} \; -exec echo \; |
Find all files under $x directory and set read-write permission for owner and group and no permission for other for those files | find ${x} -type f -exec chmod ug=rw,o= '{}' \; |
Print last day of April, 2009 | cal 4 2009 | tr ' ' '\n' | grep -v ^$ | tail -n 1 |
search for all the files in the current directory which belong to the user "xuser1" and change the owner ship of them to "user2" | find . -user xuser1 -exec chown -R user2 {} \; |
Find all /path/to/check/* regular files without descending into any directory | find /path/to/check/* -maxdepth 0 -type f |
Installs package "nodejs" answering 'yes' on all questions. | yum install -y nodejs |
find all files that belong to root user | find . -uid 0 -print |
Find all files/directories under current directory tree that start with 'R' and end with 'VER' in their names and were modified more than 1 day ago | find . -name "R*VER" -mtime +1 |
delete all the files in the current folder | find . -print0 | xargs -0 rm |
Print only common strings in content of files 'file1.sorted' and 'file2.sorted' | comm -1 -2 file1.sorted file2.sorted |
find all the files in the file system which have read permission to the user and display the ten files | find / -perm /u=r | head |
Print the list of regular files from the current directory that were last modified on November, 22 | find . -maxdepth 1 -type f -newermt "Nov 22" \! -newermt "Nov 23" -exec echo {} + |
Print continuous characters '/' and '\' randomly from /dev/urandom | grep -ao "[/\\]" /dev/urandom|tr -d \\n |
Pipe 3 newlines to sshe-keygen, answering prompts automatically. | echo -e "\n\n\n" | ssh-keygen -t rsa |
find all normal/regular files in the folder /some/dir and save the output to the file "somefile" | find /some/dir/ -type f > somefile |
Find all directories named '.texturedata' under '/path/to/look/in/' directory tree | find /path/to/look/in/ -type d -name '.texturedata' |
Display all available header information for the executable file of command "tail" | objdump -x `which tail` |
Split "file.txt" into files of at most 20 lines each with a prefix "new" | split -l 20 file.txt new |
find all the files that are modified exactly one day ago | find -daystart -mtime 1 |
Execute "chown -R ask:ask /www/askapache.com" in the background on server "askapache" | ssh askapache 'sh -c "( & )"' |
Replace all newlines from standard input except the last with spaces | sed ':a;N;$!ba;s/\n/ /g' |
Find all directories in the current one recursively which have the write bit set for "other" | find . -type d -perm -o=w |
Count the number of files in the directory trees whose pathnames match pattern '/dev/sd*[a-z]' | find /dev/sd*[a-z] -printf . | wc -c |
Connect via ssh to "your.server.example.com" and recursively copy directory "/path/to/foo" on this host to direcotry "/home/user/Desktop" on local host, using "blowfish" cipher algorithm. | scp -c blowfish -r [email protected]:/path/to/foo /home/user/Desktop/ |
kill all background processes | kill -INT $(jobs -p) |
Prints last modified file in a current folder with modification time. | find . -type f -printf '%TY-%Tm-%Td %TH:%TM: %Tz %p\n'| sort -n | tail -n1 |
display the html, javascript and text files in the current folder | find . -type f \ -exec sh -c 'echo "$0"' {} \; |
get the count of all the files that have been accessed in the last 30 days | find . -atime +30 -exec ls \; | wc -l |
Find all directories under ~/code excluding hidden directories and replace all newlines with : in the output then remove the last : | find ~/code -type d -name '[^\.]*' | tr '\n' ':' | sed 's/:$//' |
Find all .txt files under the current directory and below | find . -name '*.txt' -print0 |
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 and count the number of lines in the output | find . -type f -name "CDC*" -ctime -1 -exec sed -i'' -e '1d' -e '$d' '{}' \ | wc -l |
Print summary of new/missing files, and which files differ between /path/to/folder1 and /path/to/folder2, sorted alphabetically. | diff -rq /path/to/folder1 /path/to/folder2 |
Look in the current directory and below for all files whose names begin with either "my" or "qu" | find . \ -print |
Write "hey hey, we're the monkees" to standard output and as input to to "gzip --stdout" saved to "my_log.gz" | echo "hey hey, we're the monkees" | tee /dev/tty | gzip --stdout > my_log.gz |
Find regular files in the current directory tree that have all executable bits set | find -L . -type f -perm -a=x |
Find directory "/some/dir" if it is empty | find /some/dir/ -maxdepth 0 -empty |
find all the html files in current folder and replace old string with new string | perl -p -i -e 's/oldstring/newstring/g' `find ./ -name *.html` |
Print unique lines of sorted file "second.txt" compared to sorted file "first.txt" | comm -13 first.txt second.txt |
Search the current directory tree for regular files whose names end in ".shtml" or ".css" | find . -type f \ |
Decompress and extract 'archive.tar.gz' into '/destination' | gzip -dc archive.tar.gz | tar -xf - -C /destination |
Prints what day it was 222 days ago | date --date="222 days ago" +"%d" |
Copies file 'index.html' to each top-level directory in the current directory. | find . -mindepth 1 -maxdepth 1 -type d| xargs -n 1 cp -i index.html |
Move each of the directories in /path/to/folders/* to another directory whose name is constituted by appending .mbox to each directory name and create a directory named Messages in this directory | find /path/to/folders/* -type d -exec mv {} {}.mbox \; -exec mkdir {}.mbox/Messages \; |
Remount "rfs" filesystem "/dev/stl12" on "/system" with read and write permission | mount -o rw,remount -t rfs /dev/stl12 /system |
List all regular files in /var/www and below that have changed in the last 10 minutes | find /var/www -cmin -10 -type f -printf "%c %pn" |
Find files and directories with group id 1003 | find . -gid 1003 |
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' |
Delete and count files in $DIR_TO_CLEAN that are older than $DAYS_TO_SAVE days | find "$DIR_TO_CLEAN" -mtime +$DAYS_TO_SAVE -exec bash -c 'printf "Total: %d\n" $#; rm "$@"' _ {} + |
Copy all files unconditionally and directories in directory tree "myfiles" to "target-dir" preserving directory hierarchy and modification time | find myfiles | cpio -pmud target-dir |
display all the files in the folder /mp3-collection which are bigger than 10MB or which start with the name "Metallica" | find /mp3-collection -name 'Metallica*' -or -size +10000k |
Count the number of characters in the list of regular files from the current directory tree | find . -type f | xargs | wc -c |
Prevent ssh from reading from standard input and execute "touch /home/user/file_name.txt" on "$R_HOST" as "$R_USER" | ssh -n $R_USER@$R_HOST 'touch /home/user/file_name.txt' |
Removes first and last parts of path 'test/90_2a5/Windows' and prints the result. | echo 'test/90_2a5/Windows' | xargs dirname | xargs basename |
Find all files/directories under current directory tree that contain '1' or 'k' in their names | find . -name "*[1k]*" |
Find all .sql files in the current directory recursively and apply script "scriptname" to them | find . -name '*.sql' -exec scriptname {} + |
Search the current directory tree for regular .mkv files | find . -type f -name "*.mkv" |
Save absolute path of the script filename in variable "MY_PATH" | MY_PATH=$(readlink -f "$0") |
Move all *.pdf.marker files and their corresponding *.pdf files under ${INPUT} to ${OUTPUT} | find ${INPUT}/ -name "*.pdf" -exec mv '{}' '{}'.marker ${OUTPUT} \; |
Read the raw input of "/dev/input/mice" as hexadecimal bytes with 3 bytes per line | cat /dev/input/mice | od -t x1 -w3 |
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