All commands

All commands (14,210)

sorted by

Mount SMB v1 share on Linux
This is sample output - yours may be different.
0

mount -t cifs -o username=administrator,password=xxx,vers=1.0,sec=ntlmv2 //192.168.0.30/nas_share /mnt/win_share

swarzynski · 2025-03-20 08:16:19 115
Download and Extract mp3 from Youtube Video

This will download a video when given the link and it will extract the audio from the video. The filename will be the same as the video's title. File extension in mp3.
This is sample output - yours may be different.
5

yt-dlp --extract-audio --audio-format mp3 --audio-quality 0 -o "%(title)s.%(ext)s" <youtube_link_here>

keyboardsage · 2024-11-22 19:54:54 90
Get a random quote from Breaking Bad

Hit an API with curl returning a random quote, then parse the result with jq. Show Sample Output
This is sample output - yours may be different.
```
"A guy that clean has to be dirty." -- Hank Schrader
```
5

curl -s https://api.breakingbadquotes.xyz/v1/quotes | jq -r '.[] | "\"\(.quote)\" -- \(.author)"'

malathion · 2024-09-09 14:58:37 62
Matrix - Just 1 wobbly line rather then a rain! (shorter)

No sample. Try it and see the magic!
This is sample output - yours may be different.
2

while true; do printf "\e[32m%*s\e[0m" $(tput cols) $(shuf -e {0..1} -n $(tput cols)); sleep 0.1; done

wuseman1 · 2024-09-02 00:44:33 53
Matrix - Just 1 wobbly line rather then a rain!

Remove clear; sleep 5 and echo for not doing sample!
This is sample output - yours may be different.
0

clear; sleep 5; echo 'while :; do printf "\e[32m%*s\e[0m" $(tput cols) $(shuf -e {0..1} -n $(($(tput lines) * $(tput cols)))); sleep 0.1; done'

wuseman1 · 2024-09-02 00:40:34 57
This command will help you to hunt the current mysql query statement in real time. (-R is deprecated, using updated -Y)
This is sample output - yours may be different.
0

tshark -s 512 -i eno1 -n -f'tcp dst port 3306' -Y'<mysql.query>' -T fields -e <mysql.query>

wuseman1 · 2024-08-26 19:29:05 80
Read /etc/passwd with printf in a smarter and shorter way then some deliberately obfuscated shell commands from unethicals.
This is sample output - yours may be different.
0

eval "$(E3LFbgu='CAT /ETC/PASSWD';printf %s "${E3LFbgu~~}")"

wuseman1 · 2024-08-26 19:20:48 46
Portscan entire internet (ipv4)
This is sample output - yours may be different.
0

(masscan 0.0.0.0/0 -p80 --banner --exclude 255.255.255.255 --max-rate 100000|tee internet_ips_to_block_ranges.txt 2>&1 /dev/null); 1&> /dev/null

wuseman1 · 2024-08-26 19:14:02 35
In emergency situations, in order not to panic, shut down the following port on the network with the following rather then shutting down the PC.
This is sample output - yours may be different.
2

fuser -k 445/tcp

wuseman1 · 2024-08-26 19:11:03 30
Generate a correct mac addr.

1) The last sed expression ensures the unicast/multicast bit is set to zero 2) The greedy space replacements are for portability across UNIX seds Show Sample Output
This is sample output - yours may be different.
```
a0:94:47:e1:f7:59
```
1

od -An -N6 -tx1 /dev/urandom |sed -e 's/^ *//' -e 's/ */:/g' -e 's/:$//' -e 's/^$.$[13579bdf]/\10/'

wuseman1 · 2024-08-26 19:10:02 45
Launch hidden commands.
This is sample output - yours may be different.
0

/bin/bash -c "exec ls"

wuseman1 · 2024-08-26 19:08:24 157
Do we use: 'Wayland' OR 'x11' (systemd version)
This is sample output - yours may be different.
0

loginctl show-session $XDG_SESSION_ID -p Type

wuseman1 · 2024-08-26 19:07:02 27
Do we use: 'Wayland' OR 'x11'
This is sample output - yours may be different.
0

printf 'Session is: %s\n' "${DISPLAY:+X11}${WAYLAND_DISPLAY:+WAYLAND}"

wuseman1 · 2024-08-26 19:06:32 28
View emerge log by date in humand friendly time
This is sample output - yours may be different.
1

awk -F: '{print strftime("%Y-%m-%d -> %X --> ", $1),$2}' /var/log/emerge.log

wuseman1 · 2024-08-26 19:03:05 23
Find the right intel-ucode firmware for Intel GPU
This is sample output - yours may be different.
1

iucode_tool -S -l /lib/firmware/intel-ucode/*

wuseman1 · 2024-08-26 19:01:55 21
Disable Show More Options on Windows 11

Enable it again: reg delete "HKEY_CURRENT_USER\Software\Classes\CLSID\{86ca1aa0-34aa-4e8b-a509-50c905bae2a2}" /f Show Sample Output
This is sample output - yours may be different.
```
Successfully completed.
```
0

reg add "HKCU\Software\Classes\CLSID\{86ca1aa0-34aa-4e8b-a509-50c905bae2a2}\InprocServer32" /f /ve

wuseman1 · 2024-08-26 18:56:51 21
Generate a QR code in the terminal
This is sample output - yours may be different.
1

printf 'https://www.gentoo.org/' | curl -F-=\<- qrenco.de

wuseman1 · 2024-08-26 18:41:24 13
Shuffle a reversed string without new lines (Simple way to create a progress bar)
This is sample output - yours may be different.
0

while true; do slumpad_eversed=$(echo "$eversed_part" | grep -o . | shuf | tr -d '\n'); tput cr && tput el && echo -n "$r_part$slumpad_eversed" ; sleep 1 ; done

wuseman1 · 2024-08-26 18:37:43 33
Shuffle two letters randomly

Use variable: letters=("a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" "q" "r" "s" "t" "u" "v" "w" "x" "y" "z")
This is sample output - yours may be different.
0

while true; do shuffled_letter1=$(printf "%s\n" "${letters[@]}" | shuf -n 1); shuffled_letter2=$(printf "%s\n" "${letters[@]}" | shuf -n 1); printf "%s%s\r" "$shuffled_letter1" "$shuffled_letter2"; sleep 0.1; done

wuseman1 · 2024-08-26 18:36:29 50
Record a certain command output
This is sample output - yours may be different.
1

script -c "ls -la" logfile.log

wuseman1 · 2024-08-26 18:34:05 50
Test a crontab work on 5th line.

Avoid eval by creating an variable by adding this to a variable and then call it by $cmd
This is sample output - yours may be different.
0

eval "$(crontab -l | sed -n '5p' | tr -s ' ' | cut -d' ' -f 6-)"

wuseman1 · 2024-08-26 18:32:02 32
Dump all available man pages in a particular section

_Exit __clone2 _exit _llseek _newselect _syscall _sysctl accept accept4 access acct add_key ...
This is sample output - yours may be different.
1

find $(man --path | tr ':' ' ') -type f -path '*man2*' -exec basename {} \; | sed 's/\..*//' | sort

wuseman1 · 2024-08-26 18:29:40 93
Input redirection. The < character tells the shell to read the contents of the file specified. ANSI-C Quoting
This is sample output - yours may be different.
0

X=$'uname\x20-a'&&$X

wuseman1 · 2024-08-26 18:25:16 27
List /usr dirs when "ascii" chars is not available and only digits.
This is sample output - yours may be different.
-1

ls ${PATH:0:5}

wuseman1 · 2024-08-26 18:19:47 186
In an emergency to secure all user accounts, use the following command to lock out all users rather than shutting down the computer to help security engineers
This is sample output - yours may be different.
-1

passwd -l $(awk -F: '{ print $1 }' /etc/passwd | grep -v "nologin")

wuseman1 · 2024-08-26 18:17:40 27
1 2 3 > Last ›

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

Rename files in batch

List the Sizes of Folders and Directories

I wanted an easy way to list out the sizes of directories and all of the contents of those directories recursively.

Rename all subtitles files with the same name of mp4 files in same folder

Use this command if you want to rename all subtitles for them to have the same name as the mp4 files. NOTE: The order of "ls -1 *.mp4" must match the order of "ls -1 *.srt", run the command bellow to make sure the *.srt files will really match the movies after run this command: paste -d:

Generate a playlist of all the files in the directory, newer first

I use this to generate a playlist with all the podcasts I listen to. Ordered from most recent to older.

Create QR codes from a URL.

QR codes are those funny square 2d bar codes that everyone seems to be pointing their smart phones at. Try the following... $ qrurl http://xkcd.com Then open qr.*.png in your favorite image viewer. Point your the bar code reader on your smart phone at the code, and you'll shortly be reading xkcd on your phone. URLs are not the only thing that can be encoded by QR codes... short texts (to around 2K) can be encoded this way, although this function doesn't do any URL encoding, so unless you want to do that by hand it won't be useful for that.

list files recursively by size

Print text string vertically, one character per line.

list block devices

Shows all block devices in a tree with descruptions of what they are.

uniq without pre-sorting

Reads stdin, and outputs each line only once - without sorting ahead of time. This does use more memory than your system's sort utility.

Convert (almost) any video file into webm format for online html5 streaming

If you're using the experimental vorbis encoder (homebrew version of libffmpeg)

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)

All commands (14,210) the last day the last week the last month all time sorted by date votes

What's this?

Check These Out

Stay in the loop…

All commands (14,210)

sorted by