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Remove all broken symbolic links in /usr/ports/packages | find -L /usr/ports/packages -type l -delete |
Creates temporary file with name formatted like expression in variable ${PROG}, and saves path to it in 'mytemp' variable. | mytemp="$" |
Find all regular files under $dir directory tree with name pattern provided by the first positional parameter and show only the $num'th line from each of those files | find $dir -type f -name $1 -exec sed $num'q;d' {} \; |
Measure the disk space taken up by all *.txt files in the current directory tree | find . -name "*.txt" -print0 |xargs -0 du -ch | tail -n1 |
display all the ".c" files in the current folder excluding those that are present in the .svn sub folder | find . -name .svn -prune -o -name "*.c" -print |
Check if "~/mnt/sdc1" is mounted | mount | grep -q ~/mnt/sdc1 |
display all file in the home folder except ".c" files | find $HOME -not -iname "*.c" -print |
Display a named character dump of "test.sh" | od -a test.sh |
Delete all files/directories taken by the glob pattern * except the ones with the name 'b' | find * -maxdepth 0 -name 'b' -prune -o -exec rm -rf '{}' ';' |
Split "date.csv" into files with at most 100 lines each | split -l 100 date.csv |
Display the number of lines in all regular files under current directory tree and also show the total count | find . -type f -exec wc -l {} + |
Keep the last 3 components (directories) of $path | echo $path | rev | cut -d'/' -f-3 | rev |
Find files/directories named 'aaa.txt' under current directory tree | find . -name aaa.txt |
find all the files in the entire file system which belong to the user with the uid 1005 and discard all the errors | find / -uid 1005 2>/dev/null |
Find files on the system that are bigger than 20 megabytes | find / -type f -size +20M -exec ls -lh {} \; 2> /dev/null | awk '{ print $NF ": " $5 }' |
display list of all the hidden files in the home folder | find $HOME -name ".*" -ls |
Ungzip and untar all files matching "www-backup.tar.*" | cat www-backup.tar.*|gunzip -c |tar xvf - |
Remove all but 5 last comma-separated fields from each line in 'data.csv' | cat data.csv | rev | cut -d, -f-5 | rev |
change owner of the file destination_dir to user "user: | chown user destination_dir |
Searches the manual page names and descriptions by 'disk' keyword. | apropos disk |
find all the word press configuration php files in the folder /var/www and do not search beyond two levels | find /var/www/ -name wp-config.php -maxdepth 2 |
find all the files in the folder /opt which have been accessed exactly 20 days ago | find /opt -atime 20 |
Find all files/directories named 'foo.bar' in the entire filesystem | find / -name foo.bar -print |
Replace all spaces with underscores in directory names under current directory. | find /tmp/ -depth -name "* *" -execdir rename 's/ /_/g' "{}" \; |
Displays the count of of each unique line read from standard input | sort | uniq -c |
create directory /cpuset | mkdir /cpuset |
display all files in current folder which have not been modified in the last 60 minutes | find -mmin +60 |
Print login information of all users except the first two and replace all instances of " " with ", " | who | awk '{ if {print} }' | sed -e 's/ /, /g' |
change owner of the files into directory "/mydir" with ".txt" extension to user root | find /mydir -type f -name "*.txt" -execdir chown root {} ';' |
Calculate md5 checksum of $line and save to variable 'md5' | md5=$ |
search all jpg files in current folder | find . -type f -name "*.jpg" |
Counts total number of lines in all file under current folder. | find ./ -type f -exec wc -l {} \; | cut -d' ' -f1 | paste -sd+ | bc |
Search the current directory tree for files containing "album" and "vacations" in their names and not containing "2015" | find . -name "*album*" -a -name "*vacations*" -a -not -name "*2015*" |
Create a symbolic link named "${DESTINATION}${file}" to "${TARGET}${file}" | ln -s "${TARGET}${file}" "${DESTINATION}${file}" |
Find all files under current directory and replace the match of the regex '^.*/S' with 'S' in every line of the output | find . -type f -print | sed 's|^.*/S|S|' |
Copy all *.data files under jcho directory to files whose names are constructed by replacing the first '0' to '2' in their names | find jcho -name *.data -exec sh -c 'f="${0}"; d=$; cp ${f} ${d} ' {} \; |
display all regular files in current folder which are atleast 1 level deep and search in the alphabetical order of the directories | find -ds . -mindepth 1 -type f -print0; printf '\0'; |
Recursively lists all files in a current folder in long format, sorting by modification time. | ls -ldt $(find .) |
Remount "/dev/sda7" partition as executable | sudo mount -o remount -o exec /dev/sda7 |
find all the files in the home folder which have not been modified in the last 1 year. | find $HOME -mtime +365 |
Find symlinks under and below the "test" directory and replace them with the content of the linked files | find test -type l -exec cp {} {}.tmp$$ \; -exec mv {}.tmp$$ {} \; |
Silently download contents from https://raw.github.com/Homebrew/homebrew/go/install and show an error if failed, execute with ruby after the download is completed | ruby -e "$" |
display a long listing of all the files in the current folder which have been modified in the last 24 hours | find . -mtime -1 | xargs ls -ld |
Saves list of logged in users in system together with 'USER' header in the 'b' variable. | b=`w|cut -d' ' -f1`; |
Print "echo ping -c 2" on each string in file 'ips' | cat ips | xargs echo ping -c 2 |
Print which files differ between dir1 and dir2, treating absent files as empty | diff --brief -Nr dir1/ dir2/ |
Find all regular files starting from level 3 of directory tree ~/container and move them to the current directory | find ~/container -mindepth 3 -type f -exec mv {} . \; |
Replace all negative numbers in the 3rd comma-separated column of inputfile by the number notated in parenthesis instead of with a minus sign. | awk -F, 'BEGIN {OFS = ","} {gsub("-([0-9.]+)", "(" substr($3, 2) ")", $3); print}' inputfile |
display list of all the files in the /tmp folder | find /tmp/ -exec ls "{}" + |
Report file systems disk usage using POSIX output format. | df -P |
Remove trailing spaces and tabs from all *.java files under current directory | find . -type f -name "*.java" -exec perl -p -i -e "s/[ \t]$//g" {} \; |
Locate files that reside in the home directory and have not been accessed in the past 30 days | find $HOME -atime +30 |
Find files modified at least 5 days in the future | find . -newermt "5 days" |
split file /usr/bin/firefox into pieces per 1000 lines | split -n 1000 /usr/bin/firefox |
Change all file permissions to 664 and all directory permissions to 775 in directory tree "htdocs" | find htdocs -type f -exec chmod 664 {} + -o -type d -exec chmod 775 {} + |
Read a line from standard input into variable "REPLY" with prompt "$1 : " | read -p "$1 : " |
find all the files in the current directory and display them | find . -exec echo {} ; |
find all the files in the current folder which are readable | find . -readable |
Print files created/modified in the last day | find /directory -newermt $(date +%Y-%m-%d -d '1 day ago') -type f -print |
Find all syslog directories under /var/log directory | find /var/log -name "syslog" -type d |
find the oldest normal file in the current directory and display with its timestamp | find ! -type d -printf "%T@ %p\n" | sort -n | head -n1 |
Find all files/directories in current directory and execute myscript with minimal invocation for those files/directories | find . -exec myscript {} + |
print readline bindings that use key code '\\e\\C-k' | bind -P | grep '\\e\\C-k' |
Print the file 'text1;text2;text3' replacing each space(" ") with a newline | cat "text1;text2;text3" | sed -e 's/ /\n/g' |
Get the disk space used by all *.txt files/directories under current directory | find . -iname "*.txt" -exec du -b {} + | awk '{total += $1} END {print total}' |
search for the file "filename" in the entire file system | find / -name filename |
Unzip all files matching "file_*" and pipe into "agrep -dEOE 'grep'" | find -name 'file_*' -follow -type f -exec zcat {} \; | agrep -dEOE 'grep' |
find all regular/normal files in the current folder | find -type f |
Find all the files which are accessed 50 days back | find / -atime 50 |
find all the directories in the $LOGDIR folder which have been modified in the last 24 hours and compress them | find $LOGDIR -type d -mtime +0 -exec compress -r {} \; |
Locate all the hard links of file `passwd' | find / -samefile passwd |
Number every line of standard input as zero padded to 6 characters followed by "-" | nl -s- -ba -nrz |
Find and list all files on your current directory and show a few lines of output from the beginning | find | head |
Archive all *.xml files under current directory tree to xml.tar excluding the files that match '/workspace/' in their paths | find . -name \*.xml | grep -v /workspace/ | tr '\n' '\0' | xargs -0 tar -cf xml.tar |
Find all files/directories under current directory and print their paths | find . -exec echo {} ";" |
find all the directories in the folder $LOGDIR which have been modified in the last 5 days and delete them. | find $LOGDIR -type d -mtime +5 -exec rm -f {} \; |
remove all the files in the present directory which have space in their name. | find . -name "* *" -exec rm -f {} \; |
Remove the "^M" characters from all *.ext files under /home directory | find /home -type f -name "*.ext" -exec sed -i -e 's/^M$//' {} \; |
create directory aaa/bbb | mkdir aaa/bbb |
Counts lines in each *.php file. | wc -l `tree -if --noreport | grep -e'\.php$'` |
Recursively change owner of all files in "folder" to "user_name" | chown -R user_name folder |
View history using "vim" | history | vim - |
Find all files/directories that contain the string literal '$VERSION' in their names under current directory tree | find . -name '*$VERSION*' |
Send one ping request to host with local address in the 10.0.0.x range, with last number specified by variable "i", waiting 1 second for a reply, and output only lines containing "from" to standard output. | ping -W 1 -c 1 10.0.0.$i | grep 'from' & |
Read all *.txt file paths under /foo into a Bash array | IFS=$'\n' read -d '' -ra files < < |
Count the number of matches for the regex '\<exception\>' in all *.txt files under /usr/share/doc/ directory | cat $ | zegrep -ic '\<exception\>' |
Calculate md5 checksum of the list of all files/dirs in /path recursively including dot files and excluding the patterns 'run', 'sys', 'tmp' and 'proc', then check the checksum against the checksum saved in /tmp/file | ls -alR -I dev -I run -I sys -I tmp -I proc /path | md5sum -c /tmp/file |
Find all directories name nasa in the current directory and below. | find . -name nasa -type d |
display a long listing of all images with the name "articles" in the current folder | find . -iname "Articles.jpg" -exec ls -l {} \; |
Split "$1" into files of at most "$2" or default 10000 using a numeric suffix of length 6 | split -l ${2:-10000} -d -a 6 "$1" |
Find all files larger than 20000k | find / -type f -size +20000k |
display all directories in the folder "/myfiles" | find /myfiles -type d |
Mount remote "cifs" filesystem "//192.168.0.111/serv_share" on "/mnt/my_share" with username "me" and password "mine" | sudo mount -t cifs -o username=me,password=mine //192.168.0.111/serv_share /mnt/my_share |
Find files recursively with extension "ext" | find . -name "*.ext" |
ssh into default vagrant host without running "vagrant ssh" | ssh `vagrant ssh-config | tail -8 | perl -pe 's/^\s+/-o@/; s/\s/\=/;s/@/ /;s/\n/ /'` vagrant@localhost |
Print yesterday's date as yyy:mm:dd | date +%Y:%m:%d -d "1 day ago" |
Find all .txt files in the dir/ directory tree and copy them along with times, permissions, and ownership to dir_txt/ | find dir/ -name '*.txt' | xargs cp -a --target-directory=dir_txt/ --parents |
find all regex "./[a-f0-9\-]\{36\}\.jpg" files | find . -regex "./[a-f0-9\-]\{36\}\.jpg" |
find all text files which have extra extensions in the current folder | find . -name '*.text' -exec $SHELL -c '[ ! -f ${1%.*} ]' $SHELL '{}' ';' -print |
Print full date of yesterday | echo `date -v-1d +%F` |
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