nl_command
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Search the current directory tree for regular files whose names end with "keep.${SUFFIX}", where $SUFFIX is a shell variable | find . -type f -name "*keep.${SUFFIX}" |
List each file or directory in the current directory prefixed with its filesize in MB and sorted from smallest to largest | du -smc * | sort -n |
Calculate the md5 sum of all files in "/your/dir" including content and filenames | grep -ar -e . /your/dir | md5sum | cut -c-32 |
Find all TXT files that belong to user root | find / -user root -iname "*.txt" |
display all files in the current folder ($@ contains the variables passed as argument to the function) | find . -iname "*$@*" -or -iname ".*$@*" |
Print lines in file 'file' that do not match any word specified in file 'blacklist' (one word per line) | grep -w -v -f blacklist file |
Search the current user's home directory and its sub-directories for any file that ends in .tar-gz and was modified after filename was last modified. | find ~/ -name *.tar.gz -newer filename |
search for the regular/normal file 'myfile' in the folder /root excluding those that are present in the /root/work directory | find /root/ -path '/root/work' -prune -o -name myfile -type f -print |
Find files/directories that isn't owned by the user 'apache' under /var/www | find /var/www ! -user apache -print0 | xargs -0 |
Find the first file/directory under current directory named 'modules' and exit with empty result | find . -name modules -exec sh -c 'exit 0' \; |
Find x* files/directories under /tmp directory whose status was changed less than 1 day ago and move them to ~/play | find /tmp/ -ctime -1 -name 'x*' -print0 | xargs -r0 mv -t ~/play/ |
Find all *gz files under asia and emea directory and print their names and line counts to file_count.txt | find asia emea -type f -name "*gz" | while IFS= read -r fname; do printf "%s %s\n" "$fname" $ >> file_count.txt; done |
Print the IP addresses for the current host name | host `hostname` | awk '{print $4}' |
Create an empty file 'last.check' in directory pointed by variable "log_dir", with specified timestamp. | touch -m 201111301200.00 $log_dir/last.check |
Search the /usr/ directory tree for files newer than file /tmp/stamp | find /usr -newer /tmp/stamp |
Find files in the current directory tree whose size is 24000 bytes | find . -size 24000c |
Find all files under current directory excluding hidden directories | find -name '.?*' -prune -o \ |
Change the permissions of every directory in the current directory and all files and directories within them to 700 | find . -maxdepth 1 -type d -exec chmod -R 700 {} \; |
Search the current directory recursively for files writable for `others' | find . -perm -o+w |
Remove all Thumbs.db files under temp/images directory | find temp/images/ -type f -iname Thumbs.db | while read FILE ; do rm "${FILE}" ; done |
Save absolute path of the script filename in variable "SCRIPT" | SCRIPT=$( readlink -m $) |
rename all the svg.png files to png files in the current fodler | find . -name "*.svg.png" -print0 | sed 's/.svg.png//g' | xargs -0 -I namePrefix mv namePrefix.svg.png namePrefix.png |
Find files in the current directory tree which have permissions rwx for user and rw for group and others | find . -perm 766 |
Count lines that are neither blanks nor comments in a file 'foo.pl' | cat foo.pl | sed '/^\s*#/d;/^\s*$/d' | wc -l |
Remove all regular files found in and below /path | find /path -type f -exec rm '{}' + |
Find files/directories in entire file system with at least 644 permission | find / -perm -644 |
Search the current directory recursively for regular files last changed 2 days ago | find . type -f -ctime 2 |
Delete all non digits from index "$i" in bash array "depsAlastmodified" and print the hex dump as characters | echo "${depsAlastmodified[$i]}" | tr -cd '[[:digit:]]' | od -c |
Read a line from standard input | read |
Print the second space separated fields from standard input | tr -s ' ' | cut -d ' ' -f 2 |
Find all *.c files under and below the current directory that contain "hogehoge" | find . -name \*.c | xargs grep hogehoge |
Search the ./bin directory recursively for files called "cp" | find ./bin -name “cp” |
Find all php files whose name is tecmint.php in the current directory | find . -type f -name tecmint.php |
Search the current directory tree for files whose names begin with "my" and end with "p" followed by any character, ignoring path names containing "test" | find . -regex ".*/my.*p.$" -a -not -regex ".*test.*" |
Find all files under /home that belong to user tecmint | find /home -user tecmint |
split all files in directory "/dev/shm/split/" into pieces per 1000 lines | find /dev/shm/split/ -type f -exec split -l 1000 {} {} \; |
find all the reguar/normal php files in current directory. | find . -type f -name "*.php" |
Remove all .tmp files in and below /tmp | find /tmp -name "*.tmp" | xargs rm |
Show the number of lines for each .php and .phtml file in the current directory tree | find . -type f \ -exec wc -l {} +; |
Find all *.txt files under /foo and delete them | find /foo -name "*.txt" -delete |
display the number of lines in all the header files in the current folder | find . -name "*.h" -print | xargs wc -l |
Find all files/directories starting with 'readme' under '/usr/share/doc' directory tree | find /usr/share/doc -name '[Rr][Ee][Aa][Dd][Mm][Ee]*' |
search for all the regular/normal mp3 files in the file system and create a directory int /mt/mp3/ with the basename of the mp3 file | find / -iname “*.mp3″ -type f -print0 | xargs -0 -I ‘{}’ mkdir -p /mnt/mp3/`basename {}` |
display all the text files and pdf files in the current folder | find . \( -name "*.txt" -o -name "*.pdf" \) |
Mount "cpuset" filesystem on "/cpuset/" | mount -t cpuset none /cpuset/ |
Prints user and group information for each logged in system user. | w | awk '{print $1}' | xargs -I '{}' id '{}' |
Print the list of all subdirectories of the current directory | find . -maxdepth 1 -mindepth 1 -type d |
Filnd all directory in root directory with 777 permission and change permision755 with chmod commad . | find / -type d -perm 777 -print -exec chmod 755 {} \; |
Print the list of files and directories of the current directory | find . ! -name . -prune |
Convert "abc" to a string of hexadecimal bytes | echo abc | od -A n -v -t x1 | tr -d ' \n' |
Counts lines of myfile.txt file. | cat myfile.txt | wc -l |
Print content of 'whatever' file | cat whatever | egrep 'snozzberries|$' |
Find all regular files in the current directory and search them for "example" | find -maxdepth 1 -type f | xargs grep -F 'example' |
Remove all .txt files in and below the current directory | find . -name "*.txt" -delete |
Look for files with wide open permissions | find . -type f -perm a=rwx -exec ls -l {} \; |
Merge file1 and file2 by outputting all lines where the first comma-separated field of both files matches, followed by extra fields in file1 and those in file2 | join -t, < < |
Recursively copies everything from '/source/path/*' to the '/destination/path/', preserving from overwriting existing files, and printing info message on each operation. | cp -Rvn /source/path/* /destination/path/ |
Remove regular files whose names match Perl regular expression '\w+-\d+x\d+\.\w+$' from the current directory tree | find -type f | grep -P '\w+-\d+x\d+\.\w+$' | sed -re 's//\\\1/g' | xargs rm |
Create a table containing all information from S43.txt and S44.txt, merging lines where the first field of both files matches, and keeping the line that starts with "Gene" at the start of the file. | join -a1 -a2 <(sed s/^Gene/00ne/ S43.txt | sort) <(sed s/^Gene/00ne/ S44.txt | sort) | column -t | sed s/^00ne/Gene/ |
Find all directories under and below directory "folder_name", and change their permissions to 775 | find folder_name -type d -exec chmod 775 ‘{}’ \; |
Counts lines in file 'filename' ignoring empty lines and lines with spaces only. | cat 'filename' | grep '[^ ]' | wc -l |
Find files modified within the past 24 hours | find . -mtime 0 |
Find all *.mp3 files/directories under /tmp and remove them | find /tmp -iname '*.mp3' -print0 | xargs -0 rm |
Email an alert message containing the IP address of the SSH connection with attachment "tmpfile" to "[email protected]" | mail -s "Alert: SSH Access from `who | cut -d'' -f1`" -a tmpfile [email protected] |
Find all files in the home directory tree that are owned by another user | find ~ ! -user ${USER} |
Find all *.jpg files in */201111/* paths and numerically sort them according to the second field in the file name with a delimiter '_' | find */201111/* -name "*.jpg" | sort -t '_' -nk2 |
Find all directories named build under the current directory | find . -type d -name build |
find all the files that have not been modified in the last 2 days | find -mtime +2 |
Test if "file.tar.gz" is corrupt | gunzip -t file.tar.gz |
Counts all top-level files in a current folder. | ls -1 | wc -l |
Search the current directory tree for regular files omitting directory `omit-directory' | find . -name omit-directory -prune -o -type f -print |
Move all files and directories matching "*.boo" in the current directory to "subdir" | mv `ls *.boo` subdir |
Find all directories and for each of them, print an mv command to move it to /new/location | find . -type d -execdir echo /bin/mv {} /new/location \; |
search the file myfile.txt in the current folder | find . -name myfile.txt -print |
Set 644 permission to all regular files under /home/my/special/folder directory | chmod 644 `find /home/my/special/folder -type f` |
Find files containing `blah' in their names modified less than 2 days ago, case insensitive | find . -iname '*blah*' -mtime -2 |
Save the canonical path of "$dir/$file" in variable "path" | path=`readlink --canonicalize "$dir/$file"` |
Find all files whose names end with "~" in the /home/peter directory tree, following symlinks, and delete them | find -L /home/peter -name *~ -exec rm '{}' + |
search for the file "file1" in the entire file system | find / -name file1 |
Search for all jpg images on the system and archive them | find / -name *.jpg -type f -print | xargs tar -cvzf images.tar.gz |
Display the contents of "text" | cat text |
change owner and group of the file "/path/to/yourapp" to root | chown -v root:root /path/to/yourapp |
search in root directory downwards all files which have less than 2 links. | find / -links -2 -print |
Search the local subdirectory tree of the current working directory and the /tmp directory tree for directories named mydir | find local /tmp -name mydir -type d -print |
Find all directories with 755 permission and change the permission to 700 | find . -type d -perm 755 -exec chmod 700 {} \; |
Create all directories in the path specified by variable $tempWork | mkdir -p $tempWork |
Split "${fspec}" into 6 files with about equal number of lines each and use prefix "xyzzy." | split --number=l/6 ${fspec} xyzzy. |
Remove all .sh files in the current directory tree whose names begin with "new" | find . -name "new*.sh" -exec rm -f '{}' \+ |
find all the text files in the current folder expect those which are in the path "sk" | find . -path "./sk" -prune -o -name "*.txt" -print |
Sort "file1.txt" and output the result to "file1.txt" | sort -o file1.txt file1.txt |
find out what group a given user has | groups user |
Find all .js files in the current directory tree that do not contain a whitespace | find . -type f -name '*.js' \ |
Find all files/directores under /etc filter them by searching for 'test' in their name and run the file command on each of them | find /etc -print0 | grep -azZ test | xargs -0 file |
Find all fonts (in '/usr/local/fonts') that belong to the user 'warwick' | find /usr/local/fonts -user warwick |
Write standard output and error of "./a.out" to standard output and to file "output" | ./a.out 2>&1 | tee output |
Delete all filename* files under /dir directory | find /dir -name "filename*" -type f -exec rm {} \; |
Find files whose names match the pattern given by the 2nd argument $2 of the Bash script and replace string $3 with $4 in them | find ./ -type f -name "$2" -exec sed -i "s/$3/$4/g" {} \; |
Print $1 if $1 is an empty directory | find "$1" -name "?*" | dd bs=$() count=1 2>/dev/null |
find all the files in the current folder that have been modified in the last 24*3 hours | find ./ -mtime -3 |
find all the files in the current directory which have been modified after a file | find . -newer file |
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