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Count the number of .java files in all folders rooted in the current folder | find . -name "*.java" | wc -l |
Change directory to the directory containing file path "$1" | cd "$" |
Globally sets the maximum number of lines to held in window history as 10000. | tmux set -g history-limit 10000 |
List directories in the current working directory and remove the trailing "/" | ls -1p | grep '/$' | sed 's/\/$//' |
Find and uncompress all files in the current directory tree ending in ".csv.gz" | find . -name '*.csv.gz' -print0 | xargs -0 -n1 gzip -d |
Find all SGID set files in the file system | find / -perm /g=s |
find all the files in the entire file system which belong to the user "roger" | find / -user roger -print |
Sort file1 and file2 then display differences between them. | diff < < |
Print which files differ in "/tmp/dir1" and "/tmp/dir2" recursively | diff -qr /tmp/dir1/ /tmp/dir2/ |
Print file system disk space usage with sizes in powers of 1000 | a=$ |
remove all text files from the current folder. Print0 is used to handle files whose names have only spaces or those files which have newlines in their names | find -name "*.txt" -print0 | xargs -0 rm |
find all the files in the current folder whose name starts with 2 alphabets and ends with 2 digits. | find . — name "[a‑z][a‑z][0—9][0—9].txt" — print |
Compress the file 'file' with 'bzip2' and append all output to the file 'logfile' and stdout | bzip2 file | tee -a logfile |
search for the pattern "tgt/etc/file1" in the files tgt/etc/file2, tgt/etc/file3 | find . -type f -name \* | grep tgt/etc/file1 tgt/etc/file2 tgt/etc/file3 |
Search the regular files of the current directory tree for string "stringYouWannaFind", ignoring the case | find ./ -type f -print -exec grep -n -i "stringYouWannaFind" {} \; |
Count all directories under current directory | find . -type d -exec ls -dlrt {} \; | wc --lines |
Find all * * regular files under current directory | find . -type f -name "* *" |
Moves file '$2' to the folder where '$1' file is located. | mv "$2" "`dirname $1`" |
Prints long recursive listing of all content of a root folder, saving output to 'output.file'. | ls -lR / | tee output.file |
set alias "iTMSTransporter" for command '`xcode-select --print-path`/../Applications/Application\ Loader.app/Contents/MacOS/itms/bin/iTMSTransporter' | alias iTMSTransporter='`xcode-select --print-path`/../Applications/Application\ Loader.app/Contents/MacOS/itms/bin/iTMSTransporter' |
Find all files on the system whose names are 'drush' | find / -name drush |
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 |
Search the /Path directory tree for files matching pattern "file_name*" | find /Path -name "file_name*" |
extract the content of the file large.csv.gz and split it into pieces per 1000 lines named as xxxNNN | gzcat large.csv.gz | split -l 1000 - xxx |
Print "a\nb\ncccccccccccc\nd" as two columns and neatly format into a table | echo -e "a\nb\ncccccccccccc\nd" | paste - - | column -t |
To match only hidden dot directories | find /nas01/backups/home/user/ -type d -name ".*" -print0 -exec ls -lrt {} \; |
List all directories of the $topdir directory tree that contain a Makefile and at least one .py file | find "$topdir" -name '*.py' -printf '%h\0' | xargs -0 -I {} find {} -mindepth 1 -maxdepth 1 -name Makefile -printf '%h\n' | sort -u |
Prints long listing of a last modified file in a current folder. | find . -type f -printf '%T@ %p\n' | sort -n | tail -1 | cut -f2- -d" " | sed 's/.*/"&"/' | xargs ls -l |
find all files in the file system which have been accessed in the last 24 hours | find / -atime 0 |
Print all lines from the last occurrence of the regex 'pattern' to the end of the file 'file' | tac file | sed '/pattern/q' | tac |
create a tar.gz compress file with all the jpg files in the entire file system | find / -name *.jpg -type f -print | xargs tar -cvzf images.tar.gz |
Recursively change the user and group of all files in "/var/lib/jenkins" to "root" | chown -R root:root /var/lib/jenkins |
Print local files without descending non-local directories | find . ! -local -prune -o -print |
Print second section of space-separated data coming from stdin. | cut -d\ -f 2 |
Copies all files like 'lib*.so' to '~/usr/gtest/lib/' directory. | cp lib*.so ~/usr/gtest/lib |
Archive "/path/to/files" on host "remotemachine" authentifying as user "user" and compressing data during transmission, copy symlinks as symlinks. | rsync -avlzp user@remotemachine:/path/to/files /path/to/this/folder |
set a crontab to create or update the timestamp of "washere1" in the current directory every minute. | echo "* * * * * touch $(pwd)/washere1" | crontab |
Find all files in current directory and execute multiple commands for each file | find . -type f \ |
Set the host name to the contents of "/etc/hostname" | hostname $ |
find all files with the first letter “e” or “f” and last one x in /usr/bin directory: | find /usr/bin -name [ef]*x |
Count the number of unique duplicate lines in "file1" and "file2" combined | sort file1 file2 | uniq -d | wc -l |
verbosely create intermediate directoriy tmp as required and directory boostinst | mkdir -pv /tmp/boostinst |
Search the current directory tree for regular files changed less than 1 day ago | find . -type f -ctime -1 |
Find all files under current directory and print only the filenames | find . -type f -printf "%f\n" |
Finds IP address of system network interface, that belongs to 192.168.111 subnet. | ifconfig | grep 192.168.111 | awk '{print $2}' |
Search the current directory tree for regular files whose names end in ".shtml" or ".css" | find -type f -regex ".*/.*\.\" |
Find all executable files under current directory and show a few lines of output from the beginning | find . -perm /a=x | head |
Find recursively all empty directories in the current directory | find . -type d -empty |
Find all *.p[lm] files under /users/tom directory that matches the regex '->get(\|#hyphenate' in their contents | find /users/tom -name '*.p[lm]' -exec grep -l -- '->get(\|#hyphenate' {} + |
Print variable "$module" in formatted rows | column -x <<< "$" |
Find all files/directories under '/usr' directory tree that have been modified exactly 5 minutes ago | find /usr -mmin 5 |
Create an empty index.html in each directory under the current one, updating timestamps of already existing index.html files. | find . -type d -exec touch {}/index.html \; |
display a long list of all the files that are bigger than 10KB in current folder and save the output to the file myLogTxt.text | find . -size +10k -type f -maxdepth 1 -exec ls -lh {} \; > myLogFile.txt |
Get the total sizes of all files under current directory | find . -type f -printf '%p %s\n' | awk '{sum+=$NF}END{print sum}' |
Print content of each file under the current directory followed by that file name | find . -type f -exec cat {} \; -print |
Display a long listing of all files/directories that are bigger than 10MB under '/var/' directory tree | find /var/ -size +10M -ls |
Remove junk files modified more than 31 days ago recursively | find /path/to/junk/files -type f -mtime +31 -print0 | xargs -0 -r rm -f |
Lists the pids of all processes that have process '1782' as their parent. | pstree -p 1782 | sed 's/-/\n/g' | sed -n -e 's/.*(\([0-9]\+\)).*/\1/p' |
Find all files in /var/www/html/zip/data/*/*/*/*/* that are older than 90 days and print their parent directory paths | find /var/www/html/zip/data/*/*/*/*/* -type f -mtime +90 | sed 's|/[^/]*$||' |
create directory saxon_docs | mkdir saxon_docs |
Find files/directories named 'aaa.txt' under current directory tree | find . -name aaa.txt |
Output all lines from file1 except those present in file2, assuming both files are sorted. | diff --new-line-format="" --unchanged-line-format="" file1 file2 |
List all files/directories under current directory by replacing all spaces with commas | find . -ls | tr -s ' ' , |
find all the files in the home folder that are modified day before yesterday | find $HOME -mtime -2 -mtime +1 |
Print the last 10 lines of the file '/var/log/syslog' | tail /var/log/syslog |
Print output of 'script -c "./a" /dev/null' to standard output and "output.txt" | script -c "./a" /dev/null | tee output.txt |
List all files from the current directory tree that were modified less than 60 minutes ago, omitting "." | find . -mindepth 1 -mmin -60 | xargs -r ls -ld |
Find directories under maximum 1 level down the directory $dir with 100 permission that are owned by the user $username | find $dir -maxdepth 1 -type d -user $username -perm -100 |
Removes all files but 5 newest ones from current folder. | ls -tp | grep -v '/$' | tail -n +6 | tr '\n' '\0' | xargs -0 rm -- |
Print each character of "abcdefg" on a line | echo "abcdefg" | fold -w1 |
Remount "rfs" filesystem "/dev/stl12" on "/system" with read and write permission | mount -o rw,remount -t rfs /dev/stl12 /system |
Counts total lines in all *.php files. | find . -type f -name '*.php' -exec bash -c 'wc -l "$0"' {} \; | awk '{s+=$1} END {print s}' |
display a long listing of all regular/normal files in current directory which have been changed in the last 7 days and save the output to new.files | find ./ -type f -ctime -7 -exec ls {} \; > new.files |
Create a tar archive of all regular files modified in the last 24 hours | tar cvf - `find . -mtime -1 -type f -print` > $archive.tar |
Find all files/directories named 'photo?.jpg' under current directory tree | find . -name photo\?.jpg |
Print linux group names on multiple lines instead of single line output | groups | tr \ \\n |
Search the current directory for *rc.conf files and grant "other" users read permission | find `pwd` -name "*rc.conf" -execdir /bin/chmod o+r {} \; |
Finds binaries names in a list of running processes and prints containing folder of each binary. | ps aux | awk '{print $11}' | grep -x -e "/.*" | xargs dirname |
Copy file linked to by "bar.pdf" to "bar.pdf" | cp --remove-destination `readlink bar.pdf` bar.pdf |
Look for *.jpg files | find . -name “*.jpg” |
Print the gcc version installed on "machine.example.com" using identity file "identity_file" and suppressing the known hosts check and warnings | ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o LogLevel=quiet -i identity_file machine.example.org gcc -dumpversion |
Find all files/directories under current directory and rename them by replacing all blank spaces with _ in their paths | IFS=$'\n';for f in `find .`; do file=$; [ -e $f ] && [ ! -e $file ] && mv "$f" $file;done;unset IFS |
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 |
Login to "host" using identity file "id_rsa" | ssh -i id_rsa host |
Find all regular files in the entire filesystem that belong to the group 'users' | find / -type f -group users |
find the top 25 files in the current directory and its subdirectories | find . -type f -exec ls -al {} \; | sort -nr -k5 | head -n 25 |
Report file system containing /tmp disk usage in kilobytes. | df -k /tmp |
Print the IP addresses for the current host name | hostname -I | awk '{print $1}' |
Count the number of "X" characters in "infile" | tr -d -C X <infile | wc -c |
display all the files in the file system which belong to the user with the id 1005 | find / -uid 1005 |
display all the ".sh" files in the current folder | find -name *.sh |
Get a sorted list of the longest line with line number for each file under current directory | find . -iname '*.page' -exec awk '{if(length > L) { LINE=NR;L = length}} END {print L"|"FILENAME":"LINE}' {} \; | sort |
Set the host name to "myServersHostname" | hostname myServersHostname |
Recursively rename all files under /your/target/path replacing 'special' with 'regular' - all file/diretory names may not include spaces, and directory names containing such files may not contain the word 'special' in their name. | find /your/target/path/ -type f -exec rename 's/special/regular/' '{}' \; |
Change the permission to 0644 for all files under current directory | find . -type f -exec chmod 0644 {} + |
Remove all files whose names begin with "heapdump" and write their names to "delete.txt" | find . -name heapdump* -exec rm '{}' \; -print >delete.txt |
Calculate a list of duplicate md5 sum hashes for all the ".java" files in the current directory | md5sum *.java | awk '{print $1}' | sort | uniq -d |
find all the files in the current folder which are modified after /bin/sh. | find . -newer /bin/sh |
Compute the mean average of the word count of *.txt files smaller than 2000 words in the home directory | find ~/Journalism -name '*.txt' -print0 | xargs -0 wc -w | awk '$1 < 2000 {v += $1; c++} END {print v/c}' |
Search for "Stock" in all *.java files from the current directory tree | find . -name "*.java" | xargs grep "Stock" |
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