nl_command
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387
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Remove all regular files from the current directory tree that were modified between August 10th and August 17th | find . -type f -newermt "Aug 10" ! -newermt "Aug 17" -exec rm {} \; |
Print the current directory tree with the date of last modification for each file or directory | tree -D |
Read a single character from standard input into variable "doit" with prompt "Do that? [y,n]" | read -n1 -p "Do that? [y,n]" doit |
Show who is logged on | who |
Rename uppercase file or folder name $1 to lower case name | mv $1 `echo $1 | tr '[:upper:]' '[:lower:]'` |
display all files in current folder which have not been modified in the last 60 minutes | find -mmin +60 |
Save the canonical filename of the script in variable "me" | me=$(readlink --canonicalize --no-newline $0) |
Make directories "$@" and replace "mkdir: created directory " with "$USER created folder " in the output | mkdir "$@" |sed -e"s/mkdir: created directory /$USER created folder /" |
Gets IP address of 'eth0' network interface. | ifconfig eth0 | awk '/inet addr/{sub("addr:",""); print $2}' |
Updates 'openssl' packages without using of 'epel' repository. | sudo yum --disablerepo epel update openssl |
Request MX record of 'example.com' domain, and filter out all comment strings | dig mx example.com | grep -v '^;' | grep example.com |
Removes symlinks for formula bash-completion from the Homebrew prefix. | brew unlink bash-completion |
create a symbolic link named "/usr/bin/my-editor" to file "/usr/share/my-ditor/my-editor-executable" | ln -s /usr/share/my-ditor/my-editor-executable /usr/bin/my-editor |
Get domain name from dig reverse lookup. | $dig -x 8.8.8.8 | grep PTR | grep -o google.* |
list files under the current directory that match the filename '...', suppressing all error messages | find . -name '...' 2>/dev/null |
ERROR - will overwrite the executable if it's not a symlink. | sudo ln -sf /usr/local/ssl/bin/openssl `which openssl` |
Find all regular files in the current directory tree last modified between 1 and 3 days ago and list them using find's -ls option | find ./ -daystart -mtime -3 -type f ! -mtime -1 -exec ls -ld {} \; |
Recursively change the group of all files in "/var/lib/php/session" to "lighttpd" | chown -R :lighttpd /var/lib/php/session |
Find all foo.mp4 files in the current directory tree | find ./ -name "foo.mp4" -exec echo {} \; |
Find all files that are set user ID to root | find . -user 0 -perm -4000 -print |
Read a line from standard input into variable "text" with the prompt " Enter Here: " | read -p " Enter Here : " text |
List the files in the /etc directory tree containing text '128.200.34.' | find /etc -type f -print | xargs grep -il '128\.200\.34\.' |
Display the output of "ls" for an 80 character wide display | ls | column -c 80 |
Find all directories named "D" in the current directory tree | find . -name "D" -type d |
Change the file extension from '.txt' to '.bak' for all files/directories under current directory tree | find . -name "*.txt" | sed "s/\.txt$//" | xargs -i echo mv {}.txt {}.bak | sh |
display all the text files in the temp folder | find /tmp -name *.txt |
List the files/directories under /PATH_to_SEARCH, do a numeric sort and print the ones with different inode numbers | find /PATH_to_SEARCH -ls | sort -n | awk '!seen[$1]++' |
Decompress and extract 'archive.tar.gz' into '/destination' | gzip -dc archive.tar.gz | tar -xf - -C /destination |
Make directories "tmp/real_dir1" and "tmp/real_dir2" as needed | mkdir -p tmp/real_dir1 tmp/real_dir2 |
display a long listing of all the files in the current folder that have been accessed in today from the start of the day | find -daystart -atime 0 -ls |
Find all files/directories under ${CURR_DIR} directory | cd ${CURR_DIR} && find . |
Go to first directory specified in PATH which contains the command 'oracle' | cd $(which oracle | xargs dirname) |
find regular files in the current directory, without descending into sub-directories and display as a null separated list. | find -maxdepth 1 -type f -printf '%f\000' |
Find recursively all files changed within the last 5 minutes starting from directory b | find b -cmin -5 |
find all the *.conf files under / (root) | find / -name "*.conf" |
Remove the last 3 characters from 987654321, keeping only 987654 | echo 987654321 | rev | cut -c 4- | rev |
Search the /path directory tree for files lacking the group writable bit | find /path ! -perm /g+w |
Find all regular files in /usr/bin accessed more than 20 days ago | find /usr/bin -type f -atime +20 |
find all the files in the folder ~/Music which begin with "Automatically Add" | find ~/Music/ -name "Automatically Add*" |
Find all PHP files in the current directory recursively | find . -name \*.php -type f |
find all files starting with capital letter in the current folder | find . — name "[A‑Z]*" — print |
convert all the normal files in the current folder from dos format to unix format | find . -type f -exec dos2unix {} \; |
display all the regular files in the current folder which dont not have the permission 777 | find . -type f ! -perm 777 |
Prints process list with id numbers of a process having id 'pid'. | pstree -p [pid ...] |
Login to "$HOST" and create file "$FILE_PATH" if it does not exist | ssh -q $HOST "[[ ! -f $FILE_PATH ]] && touch $FILE_PATH" |
Copy recursively "/source/backup" to "/destination" preserving symbolic links, modification times, and permissions | rsync -rtvpl /source/backup /destination |
Print the full path of executable "lshw" | which lshw |
change the extension of all the ".abc" files in the folder "/the/path" to ".edefg" and do not change in the sub directories. execdir ensures that the command after it is executed only in the folder where the file is found | find /the/path -type f -name '*.abc' -execdir rename 's/\.\/(.+)\.abc$/version1_$1.abc/' {} \; |
Prints list of user 'myuser' groups in a format: 'groups: [comma-separated groups list]'. | echo "groups: [ $(groups myuser | sed -e 's/.\+\s\+:\s\+\(.\+\)/\1/g' -e 's/\(\s\+\)/, /g') ]" |
Send Output From Find The Find Command To A File | find / -name *.mp3 -fprint nameoffiletoprintto |
use find -exec with multiple commands regardless of their success or failure | find . -name "*.txt" \( -exec echo {} \; -o -exec true \; \) -exec grep banana {} \; |
Remount the root file system with read and write permission | mount -o rw,remount -t rootfs / |
Replace all sequence of 'blank' characters in file 'log' with a single occurence of such symbol and print space-separated fields of each string but first two fields | cat log | tr -s [:blank:] |cut -d' ' -f 3- |
search for all the links in a folder and display all the broken links | find -L /target -type l | while read -r file; do echo $file is orphaned; done |
Print 2 lines of "123456789" | yes 123456789 | head -2 |
Set file permission to 664 and directory permission to 775 for all files and directories under htdocs | find htdocs -type f -exec chmod 664 {} + -o -type d -exec chmod 775 {} + |
Store N symbols of input into variable 'buffer' | read -N $BUFSIZE buffer |
Find all files under current directory excluding the $OUTPUT file, calculate their md5sum with $MD5SUM_OPTIONS options and redirect the result to $OUTPUT | find . -type f ! -name "$OUTPUT" -exec md5sum $MD5SUM_OPTIONS {} + > $OUTPUT |
Find all files/directories named 'document' in the root filesystem partition | find / -xdev -name document -print |
Create symbolic links in the current directory for all files located in directory "/path/with/files" with a name containing "txt" | find /path/with/files -type f -name "*txt*" -exec ln -s {} . ';' |
Remount "/" without writing in "/etc/mtab" | mount -n -o remount / |
Set the bash prompt to "username@hostname" | PS1="`whoami`@`hostname | sed 's/\..*//'`" |
Find all files/directories under current directory tree whose paths match the regex 'filename-regex.\*\.html' | find . -regex filename-regex.\*\.html |
Find things changed today | find /path/to/search -daystart -ctime -1 |
Search the /path directory tree for files missing g+w or o+w bits | find /path ! -perm -022 |
Find all test2.h files under current directory | sudo find . -name test2.h |
Recursively removes all files like '*.pyc' in a current folder. | rm `find . -name \*.pyc` |
Delete all regular files that have not been modified in the last 60 weeks under $DIR directory tree | find $DIR -type f -mtime +60w -exec rm {} \; |
display all directories in current folder excluding those which do not have read permission to all users and save the output to a file | find . -type d ! -perm -g+r,u+r,o+r -prune -o -print > files_and_folders |
Copy "fileName.txt" to all directories listed in "allFolders.txt" - names may not contain spaces. | cat allFolders.txt | xargs -n 1 cp fileName.txt |
Find "*201512*" regular files in /home/myhome/data/ARCHIVE/ and move them to /home/myhome/ARCHIVE/TempFolder/ | find /home/myhome/data/ARCHIVE/. -name . -o -type d -prune -o -name '*201512*' -print | xargs -i mv {} /home/myhome/ARCHIVE/TempFolder/. |
Move all files in the current directory tree that match "some_pattern" to "target_location" | find . -name some_pattern -print0 | xargs -0 -J % mv % target_location |
Prints only unique strings of those stored in variables $COMMANDS and $ALIASES. | echo "$COMMANDS"$'\n'"$ALIASES" | sort -u |
recursively change owner of the directory /usr/lib/node_modules/ to the current user | sudo chown -R $(whoami) /usr/lib/node_modules/ |
extracts text between pattern1 and pattern2 if and only if the pattern1 is followed by pattern2 | tac infile | sed -ne '/pattern2/,/pattern1/ p' | tac - |
Recursively copy all files with names ending with .txt from dir_1 to the same location within copy_of_dir_1 | rsync --recursive --prune-empty-dirs --include="*.txt" --filter="-! */" dir_1 copy_of_dir_1 |
Lists all manual pages. | apropos -r '.*' |
Save number of processors in system to 'NP' variable | NP=`cat /proc/cpuinfo | grep processor | wc -l` |
Print the current user's real name | getent passwd `whoami` | cut -d : -f 5 |
find and delete all the empty directories in the current folder and all its sub directories too | find . -depth -empty -type d -delete |
Installs locally located 'ffmpeg-2.6.4-1.fc22.x86_64.rpm' package. | yum install ffmpeg-2.6.4-1.fc22.x86_64.rpm |
Split "t.txt" into files with at most 30000000 lines each and use a prefix "t" and numeric suffixes of length 2 | split --lines=30000000 --numeric-suffixes --suffix-length=2 t.txt t |
List executable files in the current directory, sort the list and then display the differences between the list and file .gitignore. | find . -perm /111 -type f | sed 's#^./##' | sort | diff -u .gitignore - |
Follows symbolic link $BASH_SOURCE, and prints path to its target. | $(dirname $) |
Find all files/directories matching the regex .*sql.* | find -regex .*sql.* |
Remove all tmp/*.mp3 files | find tmp -maxdepth 1 -name '*.mp3' -maxdepth 1 | xargs rm |
Print "$1" or default 10 random lines from standard input | nl | sort -R | cut -f2 | head -"${1:-10}" |
Find all files/directories in level 2 down the current directory | find -mindepth 2 -maxdepth 2 |
Replace all occurrences of '2013 Magento Inc.' with '2012 Magento Inc.' in all files with '.php, '.xml' and '.phtml' extensions under current directory tree | find . -name '*.php' -print0 -o -name '*.xml' -print0 -o -name '*.phtml' -print0 | xargs -0 sed -i '' 's/2013 Magento Inc./2012 Magento Inc./g' |
display the list of all the normal files excluding hidden files which have been accessed in the last 500 days | find . -type f -not -name ‘.*’ -mtime +500 -exec ls {} \; |
Find all .java files starting from the current folder | find . -name "*.java" |
copy all the files with the extension ".type" from one folder to a target directory | find "$sourcedir" -type f -name "*.type" -exec sh -c 'for f; do cp "$f" "$0"; done' "$targetdir" {} + |
Find files that are empty | find -empty -type -f |
Find all directories by the name `httpdocs' on the system | find / -type d -name 'httpdocs' |
List the z* links in the /usr/bin directory with inode information and the file to which it points to | find /usr/bin -type l -name "z*" -ls |
Search the current directory tree for file "a.txt" | find . -name "a.txt" -print |
Identify CMS version/releases accross all your Wordpress websites | find /home/*/public_html/ -type f -iwholename "*/wp-includes/version.php" -exec grep -H "\$wp_version =" {} \; |
Find a more recent version of httpd.conf file than /etc/apache-perl/httpd.conf in entire file system | find / -name httpd.conf -newer /etc/apache-perl/httpd.conf |
Delete empty lines from standard input | sed -n "s/^$//;t;p;" |
display all the files in the home folder which end with ".xbm" | find ~ -name '*.xbm' |
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