nl_command
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Find all regular files under $FOLDER directory tree that start with '".' and end with '"' in their names and were modified in less than $RETENTION days excluding the files whose contents match one of the regular expressions defined per line in file $SKIP_FILE | find ${FOLDER} -type f ! -name \".*\" -mtime -${RETENTION} | egrep -vf ${SKIP_FILE} |
Search the current directory tree for executable regular files | find . -type f -executable -exec file {} \; | grep -wE "executable|shared object|ELF|script|a\.out" |
Save the user name of the current user to variable "x" | x=$ |
Allow ssh from 127.0.0.1 on port "someport" through "proxy.host" to "host.in.the.remote.net" on port 22 | ssh -fL 127.0.0.1:someport:host.in.the.remote.net:22 proxy.host |
search for the word "methodNameHere" in all the python files in the folder "/mycool/project/" and display color on the matched lines in the output | find /mycool/project/ -type f -name "*.py" -print0 | xargs -I {} -0 grep -H --color "methodNameHere" "{}" |
Show manual page of find | man find |
If directory "mydir" exists in user's home directory, run "mycommand" in it, without changing the current shell's working directory, but do nothing if no such directory exists. | |
Recursively change owner and group to "tomcat7" of "webapps", "temp", "logs", "work", and "conf" | chown -R tomcat7:tomcat7 webapps temp logs work conf |
Recursively change the owner to "$USER" and group to "$GROUP" of "/var/lib/cassandra" | sudo chown -R $USER:$GROUP /var/lib/cassandra |
Print the basename from a colon separated path 'a:b:c:d:e' | basename $ |
Print the output of history without line numbers | history|awk '{$1="";print substr}' |
Saves exit statuses of piped commands in a system variable PIPESTATUS='([0]="0" [1]="1" [2]="0")' | true | false | true |
Find and show all files on the system that are larger than 900 MB | find / -size +900M |
Count all the mp3 files in the music user's home and subdirs. | find ~music -type f -iname *.mp3 | wc -l |
Reports count of characters in the value of ${FOO_NO_LEAD_SPACE} variable as follows: "length(FOO_NO_LEAD_SPACE)==<counted number of characters>" | echo -e "length(FOO_NO_LEAD_SPACE)==$(echo -ne "${FOO_NO_LEAD_SPACE}" | wc -m)" |
Update timestamps of all regular files (ie. excluding directories, symlinks, sockets, etc.) under /your/dir | find /your/dir -type f -exec touch {} + |
Find all *.ogg files/directories under your home directory that are greater than 100MB in size | find $HOME -iname '*.ogg' -size +100M |
find files in current folder using name patterns and sort the display the file names in the sorted order | find . -name "S1A*1S*SAFE" | rev | awk -F '/' '{print $1}' | rev | sort -t _ -k 5 |
List .html files in the current directory tree that contain string "base\-maps" but do NOT contain string "base\-maps\-bot" | find . -name "*.html" -exec grep -lR 'base\-maps' {} \; | xargs grep -L 'base\-maps\-bot' |
Search every directory except the subdirectory excluded_path for a regular file 'myfile' | find / -path excluded_path -prune -o -type f -name myfile -print |
Count the number of files named 'job.history' under '/data/SpoolIn' directory tree that match 'FAIL' in their contents | find /data/SpoolIn -name job.history -exec grep -l FAIL {} \+ | wc -l |
Remove all non-hidden files in the current directory tree | find -name "*" | xargs rm -f |
Print full path of command "gradle" | which gradle |
find in the entire file system for the file mysql | sudo find / -name mysql -print |
Find all files called wp-config.php in the /var/www directory and below | find /var/www/ -name wp-config.php |
search for the file "dok.txt" in the kat folder and if it sis present then print the echo statement | find kat -name dok.txt -exec bash -c 'echo -e "\nAutor: Jan Kowalski" >> {}' \; |
Connect to host "server_b" as ssh user "user" and copy local file "/my_folder/my_file.xml" to server_b's directory "/my_new_folder/". | scp -v /my_folder/my_file.xml user@server_b:/my_new_folder/ |
Find empty files under test directory | find test -empty |
search for all regular/normal files in the current folder and display the number of lines in the file | find . -type f -print | xargs -L1 wc -l |
find all the php files in current folder and search for multiple patterns in these files and display the file names | find -name '*.php' -exec grep -in "fincken" {} + | grep TODO | cut -d: -f1 | uniq |
Saves listing of a current folder in 'var' variable. | var=$(ls -l) |
use find -exec with multiple commands regardless of their success or failure | find . -name "*.txt" \ -exec grep banana {} \; |
show the list of all the files in the current folder which have been modified within the 24 hours | find . -mtime 0 -print |
Find all file paths under current directory, sort them numerically and show last 10 lines of output with only their paths | find . -type f -printf '%T@ %p\n' | sort -n | tail -10 | cut -f2- -d" " |
Find all files named "file.ext" in the current directory tree and print the path names of the directories they are in | find . -name "file.ext" -execdir pwd ';' |
Find all files in the current directory tree containing "foo" in their names | find . -print | grep -i foo |
Archive any files changed in the last day from "remote_host" to "local_dir" | rsync -av remote_host:'$(find logs -type f -ctime -1)' local_dir |
set alias "foo" for command "printf" | alias foo="printf" |
Counts all lines in $i file. | cat $i | wc -l |
Find all .txt files in the current directory tree and save their path names to /tmp/logfile | find /full/path/to/dir -name '*.txt' -print0 | xargs -0 >/tmp/logfile |
Report all files starting in the directories /mydir1 and /mydir2 larger than 2,000 blocks that have not been accessed in over 30 days | find /mydir1 /mydir2 -size +2000 -atime +30 -print |
Search the .java files from the current directory tree for TODO lines | find . -name "*.java" -exec grep -Hin TODO {} \; |
Display variable 'var' without leading and trailing whitespace. | echo $var | awk '{gsub}1' |
Inserts "new line" after last occurrence of ScriptAlias in a file | tac file | awk '/ScriptAlias/ && ! seen {print "new line"; seen=1} {print}' | tac |
Infinitely write "1" with line numbers to the console and "/tmp/to" | yes 1 | nl | tee /tmp/to |
Recursively change ownership of "/usr/local/lib/node_modules" to the current user | sudo chown -R `whoami` /usr/local/lib/node_modules |
Read line from file descriptor 4 and store received input in 'line' variable | read -u 4 line |
Find all files/directories under /eserver6 directory and follow symlinks if needed | find /eserver6 -L |
Print the full real path of "/dev/disk/by-uuid/$1" followed by "is not mounted" | echo $ is not mounted |
display all the directories in the current folder excluding those that are present in the aa directory tree | find . -type d -name aa -prune -o -print |
Delete all files/directories under current directory | find -delete |
Recursively change the owner to "${JBOSS_USER}" of "$JBOSS_LOG_DIR" | chown -R ${JBOSS_USER}: $JBOSS_LOG_DIR |
display the three largest files by size in current folder | find . -type f -exec ls -s {} + | sort -n -r | head -3 |
Find all directories under current directory and run /path/to/script.sh for each of them | find . -type d -exec /path/to/script.sh \{} \; |
find a 'fool.scala' named regular file under /opt /usr /var those directories. | find /opt /usr /var -name foo.scala -type f |
Find all `doc.txt' files in the current directory tree printing "found" for each of them | find ./ -name doc.txt -printf "found\n" |
Find all file1 and file9 files/directories under current directory | find . -name file1 -or -name file9 |
Find all files under /path/you/need, calculate their md5sums and redirect the results to checksums.md5 | find /path/you/need -type f -exec md5sum {} \; > checksums.md5 |
Find all identical files in the /usr directory tree that are bigger than 10000 bytes and write the result to usr.dups | find /usr -type f | samefile -g 10000 >usr.dups |
find file which name like 'foo.*' in current directory. | find . -name "foo.*" |
List all your files including everything in sub-directories | find ~ |
Display the mimetype of "filename" | file -i filename |
Search the current directory recursively for regular files last accessed more than 2 days ago | find . type -f -atime +2 |
Save a line of 100 random characters either "." or " " in variable "foo" | foo=$ |
Print DISPLAY of "orschiro" user | who | sed -e '/orschiro/! d; /pts/! d; s/^.*\(:[0-9.]\+\).*$/\1/p;d' | head -n1 |
find all the ".mov" files in the current folder and give it as an input to the myffmpeg.sh script file | find . -iname "*.mov" -exec /path/to/myffmpeg.sh {} \; |
Remove trailing whitespaces in TXT files from the current directory tree | find . -iname '*.txt' -type f -exec sed -i '' 's/[[:space:]]\{1,\}$//' {} \+ |
Move all files in the current directory tree that match "some_pattern" to "target_location" | find . -name some_pattern -print0 | xargs -0 -I % mv % target_location |
Split "/path/to/large/file" into files with at most 50000 lines and use prefix "/path/to/output/file/prefix" | split --lines=50000 /path/to/large/file /path/to/output/file/prefix |
Open a ssh connection to user@host with X11 forwarding to run GUI programs | ssh user@host -X |
Creates temporary file in default folder and saves path to it in 'source' variable. | source=`mktemp` |
run somecommand with one argument for each file recursively in /path that matches 'pattern' | find /path -name 'pattern' -exec somecommand {} \; |
Find all the files which are modified 50 days back | find / -mtime 50 |
Calculate and show md5 sums for every files under current directory tree | find . | xargs md5sum |
Find all files under current directory matching the posix-egrep type regex '^.*/[a-z][^/]*$' in their names | find . -regextype posix-egrep -regex '^.*/[a-z][^/]*$' -type f |
Change ownership of "/vol" to the current user | sudo chown `whoami` /vol |
Archive "path/subfolder" to "path", skipping files that are newer at the destination. | rsync -vuar --delete-after path/subfolder/ path/ |
Read a line from standard input and save response in variable "VARNAME" | read VARNAME |
Search recursively through /mydir, outputting only the base name of each file, directory, symlink etc. without any containing directories, that is the part following the last slash. | find /mydir | xargs -I{} basename {} |
Make directory "~/log" | mkdir ~/log |
Move *wp-admin/index.php files under /var/www/ to ./index_disabled | find /var/www/ -path '*wp-admin/index.php' -exec mv {} $(dirname {})/index_disabled |
find symbolic link file that name match '*sysdep.c' | find . -lname '*sysdep.c' |
Move all directories from the `sourceDir' directory tree to the `destDir' directory | find sourceDir -mindepth 1 -type d -exec mv -t destDir "{}" \+ |
Print the first word followed by the rest of the line formatted to fit in 100 characters for every line in "input" | sed 's/\ /\1\n/' input | fold -w 100 |
find *.txt files in the current directory and sub-directories | find -name "*.txt" 2>>/dev/null |
Remove all .txt files in and below the current directory | find . -name "*.txt" -delete |
Recursively changes group ownership of every folder in a current directory to the name of that folder. | find . -type d | sed -e 's/^\.\///g' | awk '{print $1, $1}' | xargs chgrp |
Print unique lines in "file_a" and "file_b" | sort file_a file_b|uniq -u |
Print only first line of 'file' content, formatted as 29-symbol wide column | cat file | fold -w29 | head -1 |
dispaly a list of all the files in the file system which belong to a specific user and exclude searching in the folder proc | find / -path /proc -prune -o -user <account> -ls |
Find all files/directories under '/directory_path' directory tree that have been modified within the last day | find /directory_path -mtime -1 -print |
Search all the regular files in the current directory tree for "example" | find -type f -print0 | xargs -r0 grep -F 'example' |
display all the files in the home folder that have been modified in the last 7*24 hours | find $HOME -mtime -7 |
Find all *.rpm files/directories under current directory | find . -name '*.rpm' |
Prints sizes of all top-level folders in a current folder with human-readable format and descending order. | du -h --max-depth=1 . | sort -n -r |
Find all files/directories named 'myfile' under your home directory | find ~ -name myfile |
find all the files in the current directory which have the size 40 bytes in the current disk partition. | find . -size -40 -xdev -print |
Find all files under /home/username/public_html/themes and set their permission to 640 | find /home/username/public_html/themes -type f -exec chmod 640 {} + |
Change permissions of all files ending in ".php" under the current directory to 755 and print a count of modified files | find . -name "*.php" -exec chmod 755 {} \; -exec /bin/echo {} \; | wc -l |
Recursively removes all files like '_*' and '.DS_Store' from /var/www/html/ folder. | rm /var/www/html/**/_* /var/www/html/**/.DS_Store |
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