nl_command
stringlengths 14
387
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532
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|---|---|
create a sub shell and search for regular/normal file with the name "myfile" in the entire file system and discard all the errors | sh -c "find / -name myfile -type f -print 2> /dev/null" |
Convert "abc" to a string of hexadecimal bytes | echo abc | od -A n -v -t x1 | tr -d ' \n' |
find all the directories in the file system which begin with "man" | find / -type d -name 'man*' -print |
Display hardware platform, ie. x86_64 even if current kernel uses 32-bit addressing. | uname -i |
Delete all empty directories in the current directory tree | find -type d -empty -exec rmdir -vp --ignore-fail-on-non-empty {} + |
search for the file "myfile" in the current folder and display all errors apart from permission denied error | find . -name myfile |& grep -v 'Permission denied' |
Remount "/home/evgeny" with the "suid" flag set | sudo mount -i -o remount,suid /home/evgeny |
Delete all files not owned by valid users | find / -nouser | xargs -0 rm |
Search the files in the current directory tree for lines containing string "vds admin" | find . -exec grep -i "vds admin" {} \; |
Search the current directory tree for files and directories whose names do not end in "exe" and "dll" | find . | grep -v '$' |
search for all regular/normal files in current folder and display all the files which contain 16 lines | find . -type f -print0 | xargs -0 grep -cH '.' | grep ':16$' |
search for files which are writable by either their owner or their group | find . -perm /u=w,g=w |
Open executable file for command "rails" in text editor "mate" | mate `which rails` |
Get the actual find exectuable path | which find |
Create ssh tunnel through "genja.org" connecting localhost port 4444 to "raptor.lan" port 22 | ssh -L 4444:raptor.lan:22 genja.org |
Find CSS files omitting results containing "CVS" | find . \! -path "*CVS*" -type f -name "*.css" |
kill all background jobs | jobs -p | xargs kill |
Push the directory containing the first existing command found in all arguments to the directory stack. | pushd $ |
Change to the directory containing the "oracle" executable | cd "$(dirname "$")" |
display all the directories in the folder /usr/share | find /usr/share -type d |
Find file names *blast* in specfied directory, case insensitive | find /usr/local -iname "*blast*" |
Search for 'some string' in all *js files under current directory and show the matched lines with line numbers | find . -name '*js' -exec grep -n 'some string' {} \; |
show processes for all users, their user/owner, and those not attached to a terminal | ps aux |
Find all the SUID files in the current directory tree | find . -perm /u=s |
Find all files in the /etc folder that have been modified within the last 30 days and copy them to /a/path/. | find /etc/ -mtime -30 | xargs -0 cp /a/path |
Find all files/directories named 'foo' under current directory tree without descending into directories named 'foo' | find . -name foo -type d -prune -o -name foo |
Search the current directory tree for all files matching either pattern "*.rb" or pattern "*.py" | find . -name "*.rb" -or -name "*.py" |
Search the home directory tree for .tar.gz files newer than file "filename" | find ~/ -name *.tar.gz -newer filename |
Search the current directory tree for regular files that can be read by noone | find -type f ! -perm -444 |
Compress $file file using gzip | gzip "$file" |
Save the number of bytes in "$file" after decompression into variable "size" | size="$(zcat "$file" | wc -c)" |
Find all regular files under '/directory_path' directory tree that have been modified within the last day | find /directory_path -type f -mtime -1 -print |
Find all files in the current directory tree, except GIT files | find -type f -name .git -prune -o -print |
Saves exit statuses of piped commands in a system variable PIPESTATUS='' | true | false | true |
display a long listing of all the files in the /var folder which are bigger than 10MB. print0 is used to handle the files which have new lines in their names | find /var -size +10000k -print0 | xargs -0 ls -lSh |
Prints long listing of directories "./my dir" and "./anotherdir" sorted from oldest to newest, with appended indicators. | $ ls -Fltr "./my dir" "./anotherdir" |
Make directory "/cpuset" | mkdir /cpuset |
search for all the perl files in the folder /nas/projects/mgmt/scripts/perl which have been modified 8-10 days ago. | find /nas/projects/mgmt/scripts/perl -mtime 8 -mtime -10 -daystart -iname "*.pl" |
Print a sorted list of the extensions of the regular files from the current directory tree matching pattern '*.???' | find . -type f -name "*.???" | awk -F. '{print $NF}' | sort -u |
find all the "passwd" files in the entire file system | find / -iname passwd |
Find all files that belongs to user Tecmint under /home directory | find /home -user tecmint |
Find all files under dir and calculate their md5sum and save the output to dir.md5 | find dir -type f -exec md5sum {} + > dir.md5 |
Continuously send "ok" plus newline to the program "recalcitrant.php" | yes ok | recalcitrant.php |
Find files that have been modified within the last month and copy them somewhere | find /etc/ -mtime -30 | xargs -0 cp /a/path |
Find file names *blast* in specfied directory | find /usr/local -name "*blast*" |
Find all directories named 'files' under current directory and set read-write-execute permission for owner and group and no permission for other for those directories | find . -type d -name files -exec chmod ug=rwx,o= '{}' \; |
Find all files under current directory and append a null character at the end of each of their paths | find -type f -print0 |
Replace all instances of ";" with "\n" in "[email protected];[email protected]" | echo "[email protected];[email protected]" | sed -e 's/;/\n/g' |
Search directories called ' backup ' from /usr directory downwards and print them. | find /usr -type d -name backup -print |
List the directory paths of all file.ext files under present working directory | find . -name "file.ext" -execdir pwd ';' |
Copy *.txt files from the dir/ directory tree along with their parent directories | find dir/ -name '*.txt' | xargs cp -a --target-directory=dir_txt/ --parents |
Find all files/directories under minimum 1 level down the $FOLDER directory and sort them | find "$FOLDER" -mindepth 1 | sort |
Find and kill a process by name | kill $ |
Search all Python files in the current directory tree for string "import antigravity" | find . -name "*.py" | xargs grep 'import antigravity' |
Archive "./dir" to "user@host:/path" via ssh on port 2222 and display progress | rsync -rvz -e 'ssh -p 2222' --progress ./dir user@host:/path |
Delete all regular files that have not been modified in the last 31 days under '/path/to/junk/files' directory tree | find /path/to/junk/files -type f -mtime +31 -exec rm -f {} \; |
Search the current directory for files whose names start with my | find . -name 'my*' |
Find all *.txt files of user root under / directory and show a few lines of output from the beginning | find / -user root -iname "*.txt" | head |
Copy a large sparse file "sparse-1" to "sparse-1-copy" | rsync --sparse sparse-1 sparse-1-copy |
Print a list of all duplicate filenames in the current directory tree if there is no white space in filenames | find . |sed 's,\/\$,\1/\2\t\1/\L\2,'|sort|uniq -D -f 1|cut -f 1 |
Find all files/directories that start with 'screen' in their names under user's home directory tree | find ~ -iname "screen*" |
Removes all files from current folder but 5 newest ones, filtering out directories from initial search. | ls -tp | grep -v '/$' | tail -n +6 | xargs -d '\n' rm -- |
Print git branch currently checked out in a working directory. | git status | grep "On branch" | cut -c 11- |
Find all 100MB+ files and delete them | find / -size +100M -exec rm -rf {} \; |
Print the IP addresses for the current host name | hostname -I | awk -F" " '{print $1}' |
Locate all *.csv files under the current directory tree separating the file names with zeroes | find . -name "*.csv" -print0 |
Gets IP address of 'en1' network interface. | ifconfig en1 | sed -n '/inet addr/s/.*addr.\([^ ]*\) .*/\1/p' |
Change permissions to 644 for all files showing the respective chmod command | find ./ -type f -print0 | xargs -t -0 chmod -v 644 |
Decompresses file 'xac.bz2', redirecting output to standard out. | bzip2 -dc xac.bz2 |
Report file system containing path to the current working directory disk usage in kilobytes. | df -k . |
Sort ":" delimited lines in "test.txt" by the first and third field preserving only unique lines | sort -u -t : -k 1,1 -k 3,3 test.txt |
Merge colon-separated information from file1 and file2 where second field of both files matches, sorting the result based on this field - for each line, output: first 3 fields of first file, followed by first 3 fields of second file. | join -o 1.1,1.2,1.3,2.1,2.2,2.3 -j2 <(sort -k2 file1) <(sort -k2 file2) |
Search PATH for utilities called "rename", display the type of file for each match found. | which -a rename | xargs file -L |
Calculate md5 sum of the md5 sum of all the sorted files under $path | find "$path" -type f -print0 | sort -z | xargs -r0 md5sum | md5sum |
Find all .sh files in the current directory tree and remove them | find . -name "*.sh" -print0 | xargs -0 rm -rf |
display files ending with ".ext" in current folder which are present in the file "foo" | find . -type f -name \*.ext | xargs grep foo |
Find all files under current directory that were modified in the last 24 hours and also include the files that were modified in less than 1 day ago | find -daystart -mtime +0 |
Find all regular files that reside in the current directory tree and were last modified more than 3 days ago | find . -type f -mtime +3 |
List each subdirectory name composing the current working directory | pwd | cut -b2- | tr '/' '\n' |
Counts number of lines returned by curl request. | curl yahoo.com --silent | wc -l |
Display name and value of 'variable' if it exists. | env | grep '^variable=' |
search for regular/normal file with the name "myfile" in the entire file system and discard all the errors | find / -name myfile -type f -print 2> /dev/null |
List all files in maximum 2 levels down the current directory | find . -maxdepth 2 -type f -exec ls -l {} \; |
find all the files in the current folder that have been modified exactly 24*3 hours ago | find ./ -mtime 3 |
Execute "lynx -dump http://dslrouter/stats.html" every 10 seconds | watch --interval=10 lynx -dump http://dslrouter/stats.html |
Find all symbolic links containing 'javaplugin' in their names under '/usr' directory tree | find /usr/ -lname *javaplugin* |
Recursively change the group of all files in "/tmp/php_session" to "daemon" | chown -R :daemon /tmp/php_session |
Search for filenames matching "android" in the current directory and number the output | ls | grep android | nl |
Search for the case insensitive regex expanded by $2 in all files named $1 (to be expanded) under current directory | find . -name $1 -type f -exec grep -i $2 '{}' \; |
Show all running processes with name matching "postgres" | ps aux | grep postgres |
Display numbers of processes in following states: running, sleeping, stopped, and defunct . | top -bn1 | grep zombie | awk '{print $4" "$6" "$8" "$10}' |
Save number of lines in 'file.txt' file in 'nbLines' variable | nbLines=$(cat -n file.txt | tail -n 1 | cut -f1 | xargs) |
Find all directories in the /path/to/base/dir tree | find /path/to/base/dir -type d |
Filters unique lines by matching against the first column of a .csv file | tac a.csv | sort -u -t, -r -k1,1 |tac |
print all files in the directories except the ./src/emacs directory | find . -wholename './src/emacs' -prune -o -print |
find all empty files in home directory | find ~ -empty |
find all the perl files in the current folder and search for a pattern | find . -name '*.pl' | xargs grep -L '^use strict' |
Find all *.java files under current directory and change their encoding to utf-8 from cp1252 | find . -type f -name '*.java' -exec sh -c 'iconv -f cp1252 -t utf-8 "$1" > converted && mv converted "$1"' -- {} \; |
find all files that have been modified yesterday | find /some/dir -mmin -$((currtime + )) -a -mmin +$() |
For each line whose first field is the same in file1 and file2, output the common first field followed by all other fields in file1 and file2. | join -j1 file2 file1 |
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