All commands

All commands (14,187)

sorted by

Truncate long strings in columns and use custom header names

Using the --table-truncate ( -T ) option, you can specify the columns you will allow to be truncated. This helps when you have some columns that are unusually long, or a small terminal window. In this example we will print out the /etc/passwd file in columns. We are using a colon as our separator ( -s: ), defining that we want table output ( -t ), defining the column names ( -N ) and allowing the column NAME to be truncated ( -T ). Show Sample Output

column -s: -t -n . -N USERNAME,PASS,UID,GID,NAME,HOMEDIR,SHELL -T NAME /etc/passwd|sed "1,2 i $(printf %80s|tr ' ' '=')"

wuseman1 · 2022-08-22 09:29:14 1171

How to sum lines with decimals in awk

Read all lines using decimal marker as point, then add all them up and outputs the result. Show Sample Output
This is sample output - yours may be different.
```
2598.5
```
4

awk '{a+=$0}END{print a}' file

bugmenot · 2022-08-15 23:04:31 476
Output requirements.txt packages pinned to latest version

Given a requirements.txt file with unpinned package names, output the packages pinned to the latest version. Handy to copy/paste back into your requirements.txt when you start a new project. Note that this will download packages but not install them. Show Sample Output
This is sample output - yours may be different.
```
Django==4.1
black==22.6.0
django-filter==22.1
djangorestframework==3.13.1
ipython==8.4.0
requests==2.28.1
```
2

pip install -r requirements.txt --dry-run --no-deps --ignore-installed | tail -n1 | tr ' ' '\n' | tail -n+3 | sed -e "s/$.*$-/\1==/"

katylava · 2022-08-12 20:33:11 462
Find non ascii characters in files in folder
This is sample output - yours may be different.
2

find . -type f -regex '.*\.$cpp\|h$' -exec grep -Pl "[\x80-\xFF]" {} \; | xargs -I % bash -c 'echo "%"; grep --color='auto' -P -n "[\x80-\xFF]" "%"'

swarzynski · 2022-08-02 11:47:59 673
Convert indentation to tabs
This is sample output - yours may be different.
-2

find . -type f -regex '.*\.$cpp\|h$' -exec bash -c 'unexpand -t 4 --first-only "$0" | sponge "$0"' {} \;

swarzynski · 2022-08-02 10:16:47 594
Change Windows line endings to Unix version

https://www.howtogeek.com/771399/how-to-use-the-find-command-in-linux/
This is sample output - yours may be different.
0

find . -type f -regex '.*\.$cpp\|h$' -exec egrep -l $'\r'\$ {} \; | xargs dos2unix

swarzynski · 2022-08-02 09:28:38 1137

Track flight information from the command line

See the flight information from the CLI Use as a SH file or function, like: `./flight.sh os 336` Show Sample Output

flight_status() { curl --silent --stderr - "https://mobile.flightview.com/TrackByRoute.aspx?view=detail&al=$1&fn=$2&dpdat=$(date +%Y%m%d)" | html2text | grep -A19 "Status" ; } ; flight_status $1 $2

sxiii · 2022-07-26 12:09:17 458

Check out Gate number for your flight from CLI with Chrome

Check out Gate number for your flight from CLI with Chrome, html2texgt and grep. Works on Arch Linux (Garuda) and probably will work on others. Requirements: * google chrome (might work with chromium as well) * installed html2text (on archlinux: sudo pacman -S python-html2text) * installed grep (comes by default with your OS) * the gate number should be visible at the given website (it's not existent too early before the flight and also disappears after the flight departed) Please don't forget to replace the link to appropriate one, matching your flight. You can also wrap this into something like `whlie true; do ...; sleep 60; done' and this will check and tell you the gate number maximum in 1 minute after it appears on Avinor website. Show Sample Output
This is sample output - yours may be different.
```
Gate

A14
```
0

google-chrome-stable --headless --dump-dom --disable-gpu "https://avinor.no/flight/?flightLegId=dy754-osl-trd-20220726&airport=OSL" 2>/dev/null | html2text | grep -A2 Gate

sxiii · 2022-07-26 11:50:59 405
Quickly run any gif as a ASCII animation in a terminal window

A python3 tool that can be installed with the following command pip3 install gif-for-cli --user
This is sample output - yours may be different.
0

gif-for-cli /path/to/gif_file.gif

ioshield · 2022-07-18 05:24:33 690
Query cheat.sh from the termianl. A quick access cheat sheet for a range of linux commands!

Show Sample Output
This is sample output - yours may be different.
```
curl cheat.sh/whoami
# whoami
# Print the username associated with the current effective user ID.
# More information: <https://www.gnu.org/software/coreutils/whoami>.

# Display currently logged username:
whoami

# Display the username after a change in the user ID:
sudo whoami
```
6

curl cheat.sh/<comamnd-to-search>

ioshield · 2022-07-18 05:08:22 587
Cross compile C# code on Linux for windows machines
This is sample output - yours may be different.
0

mono-csc hello.cs -out:world.exe

ioshield · 2022-07-18 05:03:49 368
Run a command after the process you choose finishes

Run a command as soon as another long-running command finishes. E.g. suspend the machine after performing apt upgrade. The process is selected interactively via fzf.
This is sample output - yours may be different.
1

tail --pid="$(ps -A -o pid,args | fzf | awk '{print $1}')" -f /dev/null && echo DONE

AvImd · 2022-07-14 11:20:57 475
Clone starred github repos in parallel with unlimited speed, this example will clone 25 repositories in parallel at same time.
This is sample output - yours may be different.
2

GITUSER=$(whoami); curl "https://api.github.com/users/${GITUSER}/starred?per_page=1000" | grep -o 'git@[^"]*' | parallel -j 25 'git clone {}'

wuseman1 · 2022-06-27 18:58:46 408
Backup all starred repositories from Github
This is sample output - yours may be different.
3

GITUSER=$(whoami); curl "https://api.github.com/users/${GITUSER}/starred?per_page=1000" | grep -o 'git@[^"]*' | xargs -L1 git clone

wuseman1 · 2022-06-25 20:39:12 414
Make Kali Linux look less suspicious by making the desktop look more like a windows machine

To revert back to Kali's original desktop. Just redo the same command with no options .
This is sample output - yours may be different.
3

kali-undercover

ioshield · 2022-06-24 20:23:01 365
Spawn a retro style terminal emulator.

Just note that ctrl+shift+t to make new tabs will not work with . Pair it with a terminal multiplexer like for the best experience.
This is sample output - yours may be different.
2

cool-retro-term

ioshield · 2022-06-24 20:20:38 376
Write a bootable Linux .iso file directly to a USB-stick (macOS edition)

Some of us have both Macs *and* Linux machines — so it makes sense to know how to run this command on the former in the event that a botched reinstallation renders the latter unbootable.
This is sample output - yours may be different.
-1

sudo curl -L -o /dev/disk4 https://some-distributor.org/some-distro.iso

realkstrawn93 · 2022-06-20 17:25:39 873
Download audio from youtube video
This is sample output - yours may be different.
0

yt-dlp -f 'ba' -x --audio-format mp3 https://www.youtube.com/watch?v=1La4QzGeaaQ -o '%(id)s.%(ext)s'

swarzynski · 2022-06-19 20:52:35 436

Lower PowerShell priority

Lower PowerShell priority, so that to launch processes in the background and work normally with other applications Show Sample Output

PS> Get-WmiObject Win32_process -filter 'name = "powershell.exe"' | Foreach-Object { $_.SetPriority(16384) }

pascalvaucheret · 2022-06-16 14:53:28 397

remove junk

Especially good for exported ipython files Show Sample Output
This is sample output - yours may be different.
```
Remove comments and 2 enter marks
```
0

grep -v '^# In' viz.txt | cat -s > out.txt

shantanuo · 2022-06-08 04:01:11 510
Run 10 curl commands in parallel via xargs (v2, faster then v1)
This is sample output - yours may be different.
1

xargs -I% -P10 curl -sL "https://iconfig.co" < <(printf '%s\n' {1..10})

wuseman1 · 2022-06-02 02:13:14 361
Run 10 curl commands in parallel via xargs

Useful for download mulitple files Show Sample Output
This is sample output - yours may be different.
```
xx.xxx.xxx.xx
xx.xxx.xxx.xx
xx.xxx.xxx.xx
xx.xxx.xxx.xx
xx.xxx.xxx.xx
xx.xxx.xxx.xx
xx.xxx.xxx.xx
xx.xxx.xxx.xx
xx.xxx.xxx.xx
xx.xxx.xxx.xx
```
0

NUM="10";seq ${NUM}|time xargs -I % -n1 -P${NUM} curl -sL ifconfig.co

wuseman1 · 2022-06-02 02:08:05 334
youtube2m3u

generate playlists from youtube ( or othre things that support yt-dlp) Show Sample Output
This is sample output - yours may be different.
```
#EXTINF:2:37 tvg-id="" tvg-logo="https://i.ytimg.com/vi_webp/nDIOjsZzOUM/maxresdefault.webp" group-title="Music | The Stickmen Project (youtube)",Farruko - Pepas // Sebastian Ingrosso, Tommy Trash - Reload // Trace - Get Down
https://www.youtube.com/watch?v=nDIOjsZzOUM
```
6

yt-dlp -N3 -O '#EXTINF:%(duration_string)s tvg-id="" tvg-logo="%(thumbnail)s" group-title="Music | %(channel)s (%(extractor)s)",%(title)s' -O webpage_url --playlist-end 10 https://www.youtube.com/channel/UC2eTX3jDug-6fUt89uWaPCQ

dbiesecke · 2022-05-10 00:28:20 428
Print with tabular
This is sample output - yours may be different.
6

head -4 /etc/passwd | tr : , | sed -e 's/^/| /' -e 's/,/,| /g' -e 's/$/,|/' | column -t -s,

wuseman1 · 2022-04-22 03:03:15 1028
Bash command to convert IP addresses into their "reverse" form
This is sample output - yours may be different.
1

echo "32.6.6.102" | awk -F. '{print $4"."$3"." $2"."$1}'

SeeFor · 2022-04-14 20:07:05 540
< 1 2 3 4 5 > 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

shut of the screen ( Fool proof )

Use the command to create a script and bind it to a key using keyboard shortcut. eg: Script locks the screen in a loop until the command is executed again.At first it

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Binary digits Matrix effect

Silly Perl variant.

Get Shellcode from ARM Binaries

Getting shellcode from ARM binaries - @OsandaMalith

Show GCC-generated optimization commands when using the "-march=native" or "-mtune=native" switches for compilation.

You can tell GCC to automatically select optimization commands and produce optimized code for the local machine (the one compiling the code), but you can't normally see what switches have been selected and used unless you append a "-v" and pause compilation.

Quickly CD Out Of Directories

`up 3` will climb the directory tree by three steps. `up asdf` will do nothing, and returns exit code 1 as an error should.

Convert seconds to [DD:][HH:]MM:SS

Install pip with Proxy

Installs pip packages defining a proxy

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

Get the IP address

gives u each configured IP in a seperate line.

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 (14,187) 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 (14,187)

sorted by