nl_command
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387
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Search the current directory recursively for MOV files, following symlinks | find . -iname "*.mov" -follow |
Print "operator: " followed by the full name of "${USER}" | printf "operator: `finger ${USER} | grep Name: | cut -f3 -d:` \n" |
Recursively finds all '*.pdf' files and folders in a current folder and removes them without prompting. | find . -name "*.pdf" -print0 | xargs -0 rm -rf |
Read standard input until a null character is found and save the result in variable "line" | read -r -d $'\0' |
Numerically sort each line of standard input | sort -n |
prints absolute file paths for files in current directory | find `pwd` -maxdepth 1 |
Change the owner of "process" to "root" | sudo chown root process |
Run `fastqc' on all the fastqc files in the current directory tree | find . -name "*.fq" -exec cat '{}' ';' | fastqc /dev/stdin |
Search the regular files of the current directory tree for string "foo" | find ./ -type f | xargs grep "foo" |
Print unique lines in sorted file "a.txt" compared to sorted file "b.txt" | comm -23 a.txt b.txt |
Archive "somedir/./foo/bar/baz.c" to "remote:/tmp/" preserving the relative path of "foo/bar/baz.c" | rsync -avR somedir/./foo/bar/baz.c remote:/tmp/ |
Recursively copy newer files in "sourcedir/" to "[email protected]:/dest/dir/" via ssh | rsync -auv -e ssh --progress sourcedir/ [email protected]:/dest/dir/ |
Find files whose data was modified within the given days of the month | find ./ -daystart -mtime -10 -and -mtime +1 |
Copy "./export" recursively to "/path/to/webroot" preserving permissions | rsync -pr ./export /path/to/webroot |
force remove all the c files in the current folder | find . -name "*.c" | xargs rm -rf |
Dump "input_file" as a 2 byte hexadecimal, character, and octal value and view the contents in "less" | od -xcb input_file_name | less |
Sort and print each unique line in "myfile.txt" | cat myfile.txt| sort| uniq |
Save "1 4 6 9 11 17 22" as a bash array "arr" | read -a arr <<< "1 4 6 9 11 17 22" |
List the current directory recursively ignoring the "dir1" subdirectory | find . -path ./dir1\* -prune -o -print |
Print the current working directory with resolved symbolic links | pwd -P |
display a list of all the files in the home folder which have been modified today | find ~ -type f -mtime 0 -ls |
Find the largest original ".gz" file in the current directory tree | find . -name '*.gz' -print | xargs gzip -l | awk '{ print $2, $4 ;}' | grep -v '$' | sort -n | tail -1 |
display all the file in the folder /home/david/ which start with the word "index" ( case insensitive search) | find /home/david -iname 'index*' |
Check if your/dir is empty or not | [ $ = your/dir ] |
Pick up a list of variable:value pairs from msgs.config and add them to the current shell or script's environment. | source <( sed 's/:\(.*\)/="\1"/' msgs.config ) |
Make directories "3/foo", "3/bar", and "3/baz" | mkdir 3/foo 3/bar 3/baz |
Recursively finds strings with"text string to search” in any file within the 'directory-path', following symlinks, and prints found strings with file names. | grep -r -H "text string to search” directory-path |
Prints week day of a 31 day in a current month. | cal | awk -v date=31 'NR == 2 { split } NR > 2 { for if { print header[NR == 3 ? i + 7 - NF : i]; exit } }' |
bind "\C-i" to "complete" function | bind '"\C-i":complete' |
Change permissions to 644 of multiple files with permissions 755 | find . -perm 755 -exec chmod 644 {} \; |
Find all files/directories under current directory and set their permission to 775 | find . -type f -exec chmod 775 {} \; |
Wrap each line in "file" to fit in 80 characters and count the number of lines | fold file | wc -l |
Search the directories that match pattern '/path/to/directory/folder{?,[1-4]?,50}' for .txt files | find /path/to/directory/folder{?,[1-4]?,50} -name '*.txt' |
Make hidden directory ".hiddendir" | mkdir .hiddendir |
Search for files/directories with the case insensitive pattern anaconda.* in var/log directory and create an archive of the last block of files sent to xargs | find var/log/ -iname anaconda.* | xargs tar -cvf file1.tar |
Find all files under ./lib/app and sort them | find ./lib/app -type f | sort |
Delete all files named "filename" in the current directory tree, except those with paths ending in "/myfolder/filename" | find . -name "filename" -and -not -path "*/myfolder/filename" -delete |
Delete all contents form the files that contain the case insensitive regex 'stringtofind' in maximum 1 level down the / directory excluding other partitions | find / -maxdepth 1 -xdev -type f -exec grep -li "stringtofind" {} + | parallel sed "'/./d'" '{}' |
Prints a random number between 2000 and 65000 | seq 2000 65000 | sort -R | head -n 1 |
find all the files in the current folder which have the word cache in them and do not search in the sub directories of the folder. | find . -name 'cache*' -depth -exec rm {} \; |
Replace all matches with the regex expanded by $P_FROM with the text expanded by $P_TO in all regular files under current directory not going into subdirectories and modify the files in-place | find . -type f -maxdepth 1 -exec sed -i "s/$P_FROM/$P_TO/g" {} \; |
Save the list of files modified within a fortnight ago to `deploy.txt' | find . -type f -mtime -14 > deploy.txt |
Mount a read only ntfs filesystem | mount -t ntfs |
replace the word apple with orange in all the files in the current folder | find ./ -exec sed -i 's/apple/orange/g' {} \; |
Silently read standard input until the escape key is pressed ignoring backslash escapes and using the prompt $'Press escape to continue...\n' | read -rsp $'Press escape to continue...\n' -d $'\e' |
Search the current directory recursively for regular files last changed more than 2 days ago | find . type -f -ctime +2 |
Read a single character from standard input into variable "key" without backslash escapes and using an interactive shell with the prompt $'Are you sure : ' and default value $'Y' | read -rp $'Are you sure : ' -ei $'Y' key |
Execute "some_script" on all files in the current directory tree | find -exec some_script {} \; |
move all files in the current folder another folder and do not move the files in the sub folder | find . -name "*" -maxdepth 1 -exec mv -t /home/foo2/bulk2 {} + |
Find all files and directories with permissions 664 | find . -perm 664 |
find all the files in the entire file system which have been modified in the last 48 hours | find / -mtime -2 -print |
Finds all files with names like "*.rm" in a current folder, launches ffmpeg conversion for each one, and deletes source file after. | find . -type f -name "*.rm" -exec ffmpeg -i {} -sameq {}.mp3 \; -exec rm {} \; |
Counts all files in a current folder and subfolders. | find . -type f | wc -l |
Count the number of equal lines in "file1.txt" and "file2.txt" | comm -12 <(sort file1.txt) <(sort file2.txt) | wc -l |
Create a bzip2 archive `dir_txt.tar.bz2' of all .txt files in the dir/ directory tree | find dir/ -name '*.txt' | tar -c --files-from=- | bzip2 > dir_txt.tar.bz2 |
Print every file's type, name, and inode | find -printf "%y %i %prn" |
search for the word text in all the python files in the current folder | find . -iname '*py' -exec grep "text" {} \; |
display all the empty files in the entire file system | find / -size 0 -print |
List all environment variables whose name or value contains current user's login name. | env | sed -n /"$USERNAME"/p |
Print mount point of the file system containing $path. | df -P "/tmp" | awk 'BEGIN {FS="[ ]*[0-9]+%?[ ]+"}; NR==2 {print $NF}' |
Find all files/directories under current directory tree that belong to user 'john' | find . -user john |
Decompress "path/to/test/file.gz" to standard output and save all lines matching "my regex" to files with a 1000000 line limit | gzip -dc path/to/test/file.gz | grep -P --regexp='my regex' | split -l1000000 |
Split "domains.xml" into files of at most 50000 lines each with a numeric suffix of length 4 and prefix of "domains_" | split -a 4 -d -l 50000 domains.xml domains_ |
list all .c or .sh regular files. | find . -type f \( -name "*.c" -o -name "*.sh" \) |
create directory aaa/bbb | mkdir aaa/bbb |
search for all the files having spaces in the current folder and save the output to the variable founddata | founddata=`find . -name "filename including space" -print0` |
find all the backup files in the current folder and delete them after user confirmation | find . -type f -name "*.bak" -exec rm -i {} \; |
Find all files in the current directory tree whose names end with the suffix ".keep.$1", where $1 is the first command line argument, and remove that suffix | find . -type f -name "*.keep.$1" -print0 | while IFS= read -r -d '' f; do mv -- "$f" "${f%.keep.$1}"; done |
Show the date in default format for tomorrow + 2 days + 10 minutes | date -d tomorrow+2days-10minutes |
Search the /home/bozo/projects directory tree for files modified within the last 24 hours | find /home/bozo/projects -mtime 1 |
Search the current directory for PHP files | find . -type f -name "*.php" |
displays all the files in the current folder | find . |
Use the last 100 lines of "file1" as input to "wc -l" and monitor the pipeline with the "bar" command | tail -n 100 file1 | bar | wc -l |
display all the ".sh" files in the current folder | find -name *.sh |
display all the files in the current folder for the files which have been accessed in the last 24 hours | find . -type f -atime -1 |
Compare "file1" and "file2" line by line with 3 lines of unified context | diff -u file1 file2 |
find all files in the current folder which have been modified after /etc/passwd | find -newer /etc/passwd |
display all the pdf files in a folder which start with a specific word along with their timestamp in sorted order of time and save output to a in remote server | find "/path/to/pdfs/" -type f -name "$1*.pdf" -printf "%TY/%Tm/%Td %TH:%TM %p\n" | sort -n -k1.1,1.2 -k1.3,1.4 -k1.6,1.7 -k1.9,1.10 -k2.1,2.2 -k2.4,2.5 -k3 > remoteuser@remoteserver:/u/tmp/CustTmp/zzz_pdfs.txt |
Find all files larger than 20000k and print their names and sizes | find / -type f -size +20000k -exec ls -lh {} \; | awk '{ print $8 ": " $5 }' |
Extract any line in "file1" or "file2" which does not appear in the other | comm -3 < < |
Make directory "/path/to/destination" | mkdir /path/to/destination |
Make directories to "directory{1..3}/subdirectory{1..3}/subsubdirectory{1..2}" as needed | mkdir -p directory{1..3}/subdirectory{1..3}/subsubdirectory{1..2} |
search for all the files in the folder /home which have sticky bit set and have the permissions 553 | find /home -perm 1553 |
display all the regular/normal files in a folder | find ./subdirectory/ -type f |
Delete all *.zip files under current directory that are older than 2 days | find . -name "*.zip" -mtime +2 -print0 | xargs -0 -I {} rm {} |
find all files in the current directory excluding those that end with .js or have the words .min or console in their name | find . -type f \( -name "*.js" ! -name "*-min*" ! -name "*console*" \) |
Count md5sum of all '*.py' files in a current folder with subfolders. | find /path/to/dir/ -type f -name "*.py" -exec md5sum {} + | awk '{print $1}' | sort | md5sum |
search for all the files in current folder and display all the file names separated by space | find . | awk '{printf "%s ", $0}' |
Move all files including hidden files and excluding ".." in "/path/subfolder/" to "/path/" | mv /source/path/{.[!.],}* /destination/path |
Save the UTC date represented by time string $sting2 as the seconds since epoch to variable 'FinalDate' | FinalDate=$ |
change the permissions of all the directories in the current folder | find . -type d | xargs chmod 2775 |
To descend at most one levels of directories below the command line arguments pass the -maxdepth 1 option. This will avoid deleting nested directories: | find . -maxdepth 1 -type d -iname ".[^.]*" -print0 | xargs -I {} -0 rm -rvf "{}" |
Make directory "certs" | mkdir certs/ |
Find all executable files | find / -perm /a=x |
Copy all *.data files under jcho directory to files whose names are constructed by appending the parent directory names at the beginning of their names | find jcho -name '*.data' | while read -r f; do cp "$f" "$(echo "$f" | sed 's~\]*\)/\([^]*\)$~\1_\2~')"; done |
find all readable files | find / -readable |
Force delete all files in the temp folder which have not been accesses in the last 240 hours | find /tmp/* -atime +10 -exec rm -f {} \; |
Read a line from standard input into variable "PASSWORD" | read PASSWORD |
Archive showing progress "sourcefolder" to "/destinationfolder" excluding "thefoldertoexclude" | rsync -av --progress sourcefolder /destinationfolder --exclude thefoldertoexclude |
display all directories in a folder | find /etc -type d -print |
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