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Mathematically sum all lines in "filename" | cat filename | python -c"from fileinput import input; print sum(map(int, input))" |
update the permission of all the files in the folder /u/netinst to 500 | find /u/netinst -print | xargs chmod 500 |
display all the files in current folder which have write permission to all the users | find . -perm /222 |
find md5sum of 'string to be hashed' | echo 'string to be hashed' | md5 |
Enables shell option 'lithist'. | shopt -s lithist |
Find all "G*.html" files modified more than 7 days ago in the current directory tree | find . -mtime +7 -name "G*.html" |
Find all *.srt files under directory named 'working' and show the first one found | find working -type f -name "*.srt" | head -1 |
Find only number of hard link & name of files from long list | find -type f -iname "*.txt" -exec ls -lrt {} \;|awk -F' ' '{print $1 $2 $9}' |
Find all files with '.conf' extension under '/etc' directory going into at most 2 level deep and show the last 10 of them | find /etc -maxdepth 2 -name "*.conf" | tail |
Count the number of lines in "myfile.txt" | cat myfile.txt | wc -l |
display all the files in the current folder excluding those that are present in the sub directory aa and display those files that start with the word "file" | find . \ -o \ |
display all files in current folder excluding current folder (.) | find . \! -name '.' |
Find all httpd.conf files in entire file system | find / -name httpd.conf |
Execute "ls -l" every 2 seconds | watch 'ls -l' |
Unzip all ".gz" files in the current directory tree to their respective directories | find . -name "*.gz" -execdir gunzip '{}' \; |
Get the disk space used by all *.txt files/directories under current directory | find . -name "*.txt" -print0 |xargs -0 du -ch | tail -n1 |
find files which full path name is /tmp/foo/bar under foo directory and print | find /tmp/foo -path /tmp/foo/bar -print |
find all the files that have been modified since the last time we checked | find /etc -newer /var/log/backup.timestamp -print |
Find all files under and below /dir that were modified less than 60 minutes ago | find /dir -mmin -60 |
Save the list of files in the current directory hierarchy separting file names with zeroes | find . -print0 > mypipe |
Find all filenames ending with .c in the current directory tree, case insensitive | find -iname "*.c" |
Request NS record for com. domain, receiving only authoritative answers | dig NS +aaonly com. |
Copy file or directory 'gtest' from directory 'include' in current directory to /usr/include, preserving ownerships and permissions. | sudo cp -a include/gtest /usr/include |
Print A record for domain 'domain.' from 'some.other.ip.address' nameserver | dig @some.other.ip.address domain. a |
display the name of all directories in the current folder and do not search in sub directories | find . -type d -maxdepth 1 -exec basename {} \; |
search normal files called ' banckup ' from /usr directory downward and print them. | find /usr -type f -name backup -print |
create directory tata | mkdir tata |
Join comma-separated information in 4 files - files must be sorted. | join -t, test.1 test.2 | join -t, - test.3 | join -t, - test.4 |
recursively change owner of the directory /Users/xxx/Library/Developer/Xcode/Templates and all files to user xxx | sudo chown -R xxx /Users/xxx/Library/Developer/Xcode/Templates |
Print a single line of numbers from "001" to "010" | yes | head -n 10 | awk '{printf( "%03d ", NR )}' |
Prints top-ten list of most used utilities from history. | history | awk '{ print $2 }' | sort | uniq -c |sort -rn | head |
Unzip all files that match "*.gz" in the current directory and subdirectories to stdout and search for "test" | find . -name "*.gz" -exec zcat "{}" + |grep "test" |
Find a file "foo.bar" without showing "Permission Denied" messages | find / -name foo.bar -print 2>/dev/null |
display all the regular files in the current folder excluding those that are present in the path "git" | find . -path "*.git*" -prune -o -type f -print |
Gets a current job back to the foreground. | fg |
Find all read only files in /home directory | find /home -type f -perm /u=r |
Find all regular files named 'Chapter1' under current directory tree | find . -name Chapter1 -type f -print |
search all the files in the current folder using regex excluding those that are present in the folder test | find . -name test -prune -o -regex ".*/my.*p.$" |
Find files/directories named blah (case insensitive) under current directory | find ./ -iname blah |
Remove all empty sub-directories under current directory | find . -depth -type d -empty -exec rmdir {} \; |
List regular files in current directory with read, write and execute permission for all users and also show the permissions | find . -type f -perm a=rwx -exec ls -l {} \; |
list all running jobs | jobs |
Split the contents of "file1 file2 ... file40000" into 1445 files in a round robin fashion with prefix "outputprefix" and numeric suffixes | cat file1 file2 ... file40000 | split -n r/1445 -d - outputprefix |
Exit the shell on the first error encountered | set -o errexit |
Delete history entry at offset, defined in first argument of executed script | history -d "$1" |
list all files under .performance_test directory except .performance_test/prune_me directory | find ".performance_test" -path ".performance_test/prune_me" -prune -o -exec bash -c 'echo "$0"' {} \; |
Search the current directory tree for files whose names start with "f" | find . -name f* -print |
Print common files of directory "1" and "2" | comm -12 <(ls 1) <(ls 2) |
Removes first and last parts of path $path and saves the result in 'finalName' variable. | finalName=$(basename -- "$") |
find all the files with the name september ( case insensitive ) | find -iname september |
Change owner to "root" and group to "dockerroot" of "/var/run/docker.sock" | sudo chown root:dockerroot /var/run/docker.sock |
Print all user names and terminals of users who are logged in | who | cut -d " " -f1,2 |
Find all files/directories named 'Waldo' under 'Books' directory tree that is located in user's home directory | find ~/Books -name Waldo |
find all the directories in the home folder do not search in sub directories | find /home -maxdepth 1 -type d |
Change permissions of all files ending ".php" under the current directory to 755 and print a count of modified files | find . -name "*.php" -exec chmod 755 {} + -printf '.' | wc -c |
Print the current user name and inode number of "/home" | echo `whoami` `stat -c %i "/home"` |
Find all regular files in the current directory tree whose names are "YourProgramName", change to the directories they are in, and execute them with parameter "YourParameterFile" | find . -type f -name YourProgramName -execdir ./YourProgramName YourParameterFile \; |
Save absolute path of "$path" that may not exist to variable "abspath" | abspath=$ |
change the group of all directories in the current folder | find . -type d -exec chgrp usergroup {} \; |
Search the "test1" directory recursively for regular files named "textfile.txt" | find test1 -type f -name 'textfile.txt' -print |
Allocate a pseudo-terminal and execute "screen -r" followed by "ls" on host "example.com" | ssh -t example.com "screen -r; ls" |
Print multiline text "ONBOOT=\"YES\"\nIPADDR=10.42.84.168\nPREFIX=24" to the terminal, replacing '\n' with newline symbol, and append that text to file /etc/sysconfig/network-scripts/ifcfg-eth4 as root user. | echo -e "ONBOOT=\"YES\"\nIPADDR=10.42.84.168\nPREFIX=24" | sudo tee -a /etc/sysconfig/network-scripts/ifcfg-eth4 |
Print the names of all regular files in the current directory tree | find . -type f -exec echo {} \; |
Prints process tree for the current process with ASCII line drawing characters. | pstree -A -s $$ |
Calculate md5 sum of empty string | echo -n "" | md5sum |
find all files which name contain 'foo' and path is not dir1 or dir2 | find ! -path "dir1" ! -path "dir2" -name "*foo*" |
Set variable BZIP2_CMD to the full path of command "bzip2" | BZIP2_CMD=`which bzip2` |
Find writable regular files in the current directory | find -type f -maxdepth 1 -writable |
Move all files and directories in the current directory to "$TARGET" excluding files matching "$EXCLUDE" | ls -1 | grep -v ^$EXCLUDE | xargs -I{} mv {} $TARGET |
search for all the files in the current folder which have the word "-GHBAG-" and display the move command for replacing the word "GHBAG" in the file names to "stream-agg" | find . -name '*-GHBAG-*' -exec bash -c 'echo mv $0 ${0/GHBAG/stream-agg}' {} \; |
show all the files in current directory | find . |
Force create a symbolc link named "/usr/local/bin/fpt" to "/usr/local/bin/findpdftext" | sudo ln -s -f "/usr/local/bin/findpdftext" "/usr/local/bin/fpt" |
Sets shell option 'dotglob'. | shopt -s dotglob |
Find all Read Only files in entire file system and show a few lines of output from the beginning | find / -perm /u=r | head |
Find all files/directories named 'query' under current directory | find -iname "query" |
Print the full path of a file under the current working directory with inode number specified on standard input | xargs -n 1 -I '{}' find "$" -type f -inum '{}' -print |
Print appended data in "/var/log/some.log" that match "foo" and "bar" | tail -f /var/log/some.log | grep --line-buffered foo | grep bar |
Query SRV records for domain '_kerberos._udp.foo.com' | dig -t SRV _kerberos._udp.foo.com |
Prints directory where the executing script is located. | `dirname $0` |
Interactively display all lines containing 'word' in all files whose name ends with .properties in the current directory, waiting for user input after each page. | grep -R 'word' *.properties | more |
search for files in the current folder which start with "myfile" ( case insensitive search ) | find . -iname 'MyFile*' |
find md5sums of files named "file*.txt" | md5sum file*.txt |
Search everywhere for a file called `httpd.conf' that is newer than /etc/apache-perl/httpd.conf | find / -name httpd.conf -newer /etc/apache-perl/httpd.conf |
display all normal/regular files in the folder "pathfolder" | find pathfolder -type f |
Find all subdirectories of the current directory except hidden ones | find -maxdepth 1 -type d ! -name ".*" |
Print name of user with current EUID. | ps -o user= -p $$ | awk '{print $1}' |
Search for a pattern "can't" in all the files with the name "file-containing-can't" in the current directory tree | find . -name "file-containing-can't" -exec grep "can't" '{}' \; -print |
find all the files in the current folder that are modified after the modification date of a file | find . -newer document -print |
display all files in the directory "dir" which have been changed in the last 60 minutes | find /dir -cmin -60 |
Print the ping statistics of 4 requests to "www.google.com" | ping -c4 www.google.com | awk '/---/,0' |
Find all $1 files/directories under current directory and enter into the parent directory of the first one found | cd $(find . -name $1 | xargs dirname) |
find md5sum of content from "www.google.com" | curl -s www.google.com | md5 |
sort each file in the bills directory, leaving the output in that file name with .sorted appended | find bills -type f -execdir sort -o '{}.sorted' '{}' ';' |
Clone the permissions of "$srcdir" to "$dstdir" | chown $ "$dstdir" |
Add "prefix_" to every non-blank line in "a.txt" | nl -s "prefix_" a.txt | cut -c7- |
Find files under /usr that are newer than the first file `FirstFile' | find /usr -newer /usr/FirstFile -print |
Print the file names along with their sizes under current directory tree | find . -type f -printf "%f %s\n" |
Find and show all files in the current directory tree that are smaller than 500 kB | find . -size -500k |
find files in home directory that names are game | find ~ -name game |
set alias "cd-" for command 'cd ${${$}[3]}' | alias cd-='cd ${${$}[3]}' |
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