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concatenates file1.txt, file2.txt, and file3.txt with the filenames printed at the beginning of file contents | head -n99999999 file1.txt file2.txt file3.txt |
Find and delete all hard links in the /home directory to file1 | find /home -xdev -samefile file1 -print0 | xargs -0 rm |
Search for 'Text To Find' in all regular files under current directory tree and show the matched files and matched lines with line numbers | find ./ -type f -exec grep -Hn "Text To Find" {} \; |
Find all files under current directory and show their file information | find . -type f | xargs file |
Find directory "your/dir" if it is empty | find your/dir -prune -empty -type d |
Search the current directory tree for hidden files skipping .htaccess | find . -type f \ |
Run 'chmod 0644' on all files in the current directory tree | find . -type f -exec chmod 0644 {} \; |
Recursively changes group ownership of the $PATH_TO_OUTPUT_FOLDER directory to $GROUP group. | chgrp -R $GROUP $PATH_TO_OUTPUT_FOLDER |
Find command will display top 10 Big files from current directory . | find . -type f -exec ls -s {} \; |sort -n -r |head |
Find files that are writable by both the “other” and the group under the plsql directory | find plsql -type f -perm -220 -exec ls -l {} \; 2>/dev/null |
Find *.js UTF-8 files with BOM and correct them | find . -iname *.js -type f -exec sed 's/^\xEF\xBB\xBF//' -i.bak {} \; -exec rm {}.bak \; |
Print the boot time in standard date format | who -b | awk '{$1=""; $2=""; print $0}' | date -f - |
Find all files whose names begin with 'Makefile' in the /usr/ports directory tree and count how many of them contain 'QTDIR' | find /usr/ports/ -name Makefile\* -exec grep -l QTDIR '{}' '+' | wc -l |
Get the total sizes of all files under current directory | find path -type f -printf '%s\n' | awk '{sum += $1} END {print sum}' |
only get md5sum of a file | md5 -q file |
find all files in the home folder that are modified in the last 24 hours | find $HOME -mtime -1 |
find all the files that have been modified exactly 2 days ago | find -mtime 2 |
Print fourth column of data from text file text.txt where columns separated by one or more whitespaces. | cat text.txt | tr -s ' ' | cut -d ' ' -f4 |
List all files in entire file system owned by the user wnj and are newer than the file ttt | find / -newer ttt -user wnj -print |
find all the text files present in the current directory excluding the search in certain paths. | find . -type f -name "*.txt" ! -path "./Movies/*" ! -path "./Downloads/*" ! -path "./Music/*" |
Search regular files under ~/mail for string "Linux" | find ~/mail -type f | xargs grep "Linux" |
search for all the symbolic links in a folder and delete them | find /target/dir -type l ! -exec test -e {} \; -exec rm {} \; |
find all the html files in the current folder | find . -name "*.html" |
Search for files only that end with .php and look for the string $test inside those files | find . -name \*.php -type f -exec grep -Hn '$test' {} \+ |
Find all regular files in /usr/bin modified less than within the last 10 days | find /usr/bin -type f -mtime -10 |
Prints all child processes of a process with id 20238, separated with comma. | pstree -p 20238 | sed 's/(/\n(/g' | grep '(' | sed 's/(\(.*\)).*/\1/' | tr "\n" , |
Print a randomly sorted list of numbers from 1 to 10 to file "/tmp/lst" and outputs "-------" followed by the reverse list to the screen | seq 1 10 | sort -R | tee /tmp/lst |cat < < | tac |
Write output of "ls -hal /root/" to standard output and to "/root/test.out" | ls -hal /root/ | sudo tee /root/test.out |
change the permissions of all the directories in the current folder, print0 is used for handling files with newlines in their file name | find . -type d -print0 | xargs -0 chmod 2775 |
search for all non empty regular/normal files in the current folder and empty them ie., delete the content not the file | find . -type f -maxdepth 1 -not -empty -print0 | xargs -0i cp /dev/null {} |
find files in the current directory having name "filename" | find -iname "filename" |
Save host name in variable "thisHOSTNAME" | thisHOSTNAME=`hostname` |
Convert all characters in standard input to lower case | sed 's/.*/\L&/' |
Make directory "/etc/cron.minute" | mkdir /etc/cron.minute |
Print a count of each unique line from standard input | sort | uniq -c |
Measure the disk space taken up by all TXT files in the current directory tree | find . -iname "*.txt" -exec du -b {} + | awk '{total += $1} END {print total}' |
Find all files under current directory that match the case insensitive regex .\|./.git and replace the text matching the regex '$lower1' with $lower2 in these files | find . -type f \! -iregex '.\|./.git' -exec perl -i -pe 's/$lower1/$lower2/g' {} \; |
Find all directories at level 3 of directory tree $from_dir | find $from_dir -mindepth 3 -maxdepth 3 -type d |
Print numbers from 1 to 100 | seq 1 100 |
List all regular files under current directory ensuring white space safety | find . -type f -print0 | xargs -0 -n 1 |
List all files and directories in the current working directory in a long list format sorted by the oldest modification time | ls -alrt `pwd`/* |
extract "phantomjs-1.9.0-linux-x86_64.tar.bz2" | sudo tar xvf phantomjs-1.9.0-linux-x86_64.tar.bz2 |
display all the files having spaces in the current folder | find . -name "filename including space" -print0 |
Remove the "123_" prefix from all filenames of .txt files in current directory. | find -name "123*.txt" -exec rename 's/^123_//' {} ";" |
modify the permissions of all the folders in a directory | find /path/to/dir -type d -exec chmod 755 {} \; |
Save the user name in upper case of the current user in variable "v" | v=$(whoami | tr 'a-z' 'A-Z') |
Search the current directory tree for regular files whose names end in "log" | find `pwd` -name "*log" -type f |
Pushes directory path that saved in $line variable to the dirs stack, expanding symbol '~', if present, as home folder path. | pushd "${line/#\~/$HOME}"; |
Print paths to all subdirectories inside of a directory | du | awk '{print $2}' |
Get directory listing of URL $1 and save them to variable 'header' by deleting '\r' characters | header="$(curl -sI "$1" | tr -d '\r')" |
Find all files/directories with space in their names under current directory | find . -name '* *' |
Print linker search path using ld formatted on new lines | ld --verbose | grep SEARCH_DIR | tr -s ' ;' \\012 |
change the permissions of all the regular/normal files to 664 in the current folder | find . -type f -exec chmod 664 {} \; |
find all the text files in the file system and search only in the disk partition of the root. | find / -mount -name "*.txt" |
Find all regular files newer than '/tmp/$$' under '/tmefndr/oravl01' directory tree | find /tmefndr/oravl01 -type f -newer /tmp/$$ |
List the directory paths of all file.ext files under present working directory | find . -name "file.ext" -execdir pwd ';' |
Delete all files under root whose status were changed more than 30 minutes ago | find root -type -f -cmin +30 -delete |
Lookup information of the current user | finger `whoami` |
Sources script incl.sh in the folder where current running script is located | source "$( dirname "${BASH_SOURCE[0]}" )/incl.sh" |
List files in "dir1" that are not in "dir2" | comm -23 < < |
Print reverse lookup for IP address 72.51.34.34 | dig -x 72.51.34.34 |
find all the files that have been modified today | find . -type f -mtime 0 |
Set shell option 'histverify'. | shopt -s histverify |
Find all .sh files in the current directory tree and remove them | find . -name "*.sh" -exec rm -rf '{}' \ |
search for the file test.txt in the folders /home and /opt | find /home /opt -name test.txt |
display all the files in the current folder which have been modified in the last 24 hours excluding all directories | find . \ -o \ |
check if a named screen session already exists | screen -list | awk '{print $1}' | grep -q "$1$" |
Print numbers from 1 to 30 with 0 padding to a width of 2 | printf " %02d" $ |
Print $d if $d is an empty directory | find "$d" -prune -empty -type d |
Search for 'mystring' in all *.txt files under current directory | find . -name *.txt | xargs egrep mystring |
create an archive using 7zhelper.sh as a compress program | tar -I 7zhelper.sh -cf OUTPUT_FILE.tar.7z paths_to_archive |
Save the 10 ping results to "$gateway" in variable "pingResults" | local pingResults=$ |
Recursively change the owner of npm's directories to the current user | sudo chown -R $ $/{lib/node_modules,bin,share} |
Find all symbolic links in the current working directory that link to files outside the current working directory | find . -type l -exec sh -c 'echo $ "<-- {}"' \; | grep -v "^$" |
Print "Total generated: " followed by the number of unique lines in "$generated_ports" | echo "Total generated: $." |
Find all files under current directory that match the case insensitive regex .\|./.git and replace all occurrences of the regex $1 with $upper2 in these files | find . -type f \! -iregex '.\|./.git' -exec perl -i -pe 's/$1/$upper2/gi' {} \; |
find all directories in the current directory | find . -type d |
Create directory `junk' in the home directory | find ~ -type d -exec mkdir junk {} \; 2> /dev/null |
Counts total lines in all *.php files in the current directory recursively | find . -name '*.php' -type f | xargs cat | wc -l |
Print a colon-separated list of all directories from the ~/code directory tree, except hidden ones and those below them | find ~/code -name '.*' -prune -o -type d -printf ':%p' |
Run "ps -elfc" followed by "ls" on host "example.com" | ssh example.com "ps -elfc; ls" |
Find all directories in current directory without going into sub-directories | find . -type d -maxdepth 1 |
search for all the directories in the current folder and run the print command in the searched folder | find . -type d -execdir sh -c 'printf "%s/%s\n" "$PWD" "$0"' {} \; |
Construction with additional '-exec true' to be used if both commands need to run regardless of their success or failure. | find . -name "*.txt" \( -exec echo {} \; -o -exec true \; \) -exec grep banana {} \; |
List all files/directories under current directory matching the posix-egrep type regex ".+\.(c|cpp|h)$" in their names excluding the files that contain 'generated' or 'deploy' in their paths | find . -regextype posix-egrep -regex '.+\.(c|cpp|h)$' -print0 | grep -vzZ generated | grep -vzZ deploy | xargs -0 ls -1Ld |
Set permissions of all files under "/opt/lampp/htdocs" to 644 | find /opt/lampp/htdocs -type f -exec chmod 644 {} \; |
find all the php files in current folder using regular expressions | find . -regex '.+\.php' |
Recursively removes all empty folders under current folder. | find -depth -type d -empty -exec rmdir {} \; |
List all regular files in the current directory tree | find . -type f | xargs ls -l |
Find all .sh files in the current directory tree and remove them | find . -name "*.sh"| xargs rm -rf |
Search all files called "abc" that reside in the current directory tree for string "xyz" | find . -name "abc" -exec grep "xyz" {} \; |
Find all files that contain the case insensitive regex 'stringtofind' in maximum 1 level down the / directory without descending into other partitions | find / -maxdepth 1 -xdev -type f -print -exec grep -i "stringtofind" -q {} \; |
find all the text files in the current folder and display their Permissions and size along with their name | find . -name "*.txt" -printf "%M %f \t %s bytes \t%y\n" |
Split "database.sql" into files of at most 100000 lines each with prefix "database-" | split -l 100000 database.sql database- |
search for all the files in a directory and give the first five characters of the file | find . -type f -exec bash -c 'echo ${1:0:5}' funcname {} \; |
find all 'js' suffix files exclue the path *exclude/this/dir*' under current dirctory | find . -name '*.js' -not -path '*exclude/this/dir*' |
Find files with 002 permission in entire file system | find / -type f -perm -002 |
Join colon-separated information in 3 files LN.txt PH.txt and AD.txt in a cascade fashion: join LN.txt and PH.txt, then join the result with AD.txt | join -t':' <(sort LN.txt) <(sort PH.txt) | join -t':' - <(sort AD.txt) |
Search the current directory tree for files matching regular expression '.*myfile[0-9][0-9]?' | find . -regex '.*myfile[0-9][0-9]?' |
search for all the regular/normal files with the name "access.log" in the folder /var/www which are bigger than 100MB | find /var/www -type f -name «access.log*» -size +100M |
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