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Show active connection
This is sample output - yours may be different.
0

nmcli -g name,type connection show --active|awk -F: '/ethernet|wireless/ { print $1 }'

wuseman1 · 2022-09-22 20:16:21 130
Simple tar

Simple commant to tar a path
This is sample output - yours may be different.
0

tar -cvzf file.tar.gz path

x3mboy · 2022-09-17 16:40:09 38
rclone - dump teamdrive config to config file
This is sample output - yours may be different.
1

$ rclone backend -o your-config.conf drives mydrive:

dbiesecke · 2022-09-09 15:58:16 80
url redirect tracer with curl

tracing redirects for a given url shortener Show Sample Output
This is sample output - yours may be different.
```
Location: https://www.shorturl.at/dfIJQ
location: https://youtu.be/dQw4w9WgXcQ
location: https://www.youtube.com/watch?v=dQw4w9WgXcQ&feature=youtu.be
```
2

curl --silent -I -L shorturl.at/dfIJQ | grep -i location

aysadk · 2022-09-04 19:31:46 62
QEMU From Fedora Livecd + Device CD + Device Disk + UEFI + 800x600 forced

Entire command: sudo qemu-system-x86_64 -enable-kvm -cpu host -M q35 -m 2G -smp 4 --bios /usr/share/edk2/ovmf/OVMF_CODE.fd -drive id=cdrom,file=/dev/sr1,if=none,media=cdrom,format=raw,readonly=on -drive id=disk,file=/dev/md126,if=none,format=raw -device virtio-blk-pci,drive=cdrom -device virtio-blk-pci,drive=disk -device VGA,vgamem_mb=64,xres=800,yres=600
This is sample output - yours may be different.
-2

sudo qemu-system-x86_64 ...

pqatsi · 2022-09-02 20:07:02 67
Extend LVM and online resize filesystem

Default volume group in Ubuntu is ubuntu-vg and the logical volume is ubuntu-lv, so the provided command will resize the disk to utilize 100% of the available space. Show Sample Output
This is sample output - yours may be different.
```
  Size of logical volume ubuntu-vg/ubuntu-lv changed from <14.25 GiB (3647 extents) to <28.50 GiB (7295 extents).
  Logical volume ubuntu-vg/ubuntu-lv successfully resized.
resize2fs 1.45.5 (07-Jan-2020)
Filesystem at /dev/ubuntu-vg/ubuntu-lv is mounted on /; on-line resizing required
old_desc_blocks = 2, new_desc_blocks = 4
The filesystem on /dev/ubuntu-vg/ubuntu-lv is now 7470080 (4k) blocks long.
```
1

lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv && resize2fs /dev/ubuntu-vg/ubuntu-lv

sxiii · 2022-08-26 13:02:10 167
Clean or clean pacman and pamac cache
This is sample output - yours may be different.
1

sudo pacman -Scc && pamac clean -b

bugmenot · 2022-08-24 19:10:38 100
Sort disk usage from directories

Sort disk usage from directories in the current directory Show Sample Output
This is sample output - yours may be different.
```
4.0K    ./jenkins_home
8.0K    ./.docker
8.0K    ./.gnupg
8.0K    ./.oracle_jre_usage
12K     ./.local
28K     ./.config
36K     ./.ssh
40K     ./helm
140K    ./.ansible
2.7M    ./x3mboy
15M     ./.cache
15M     ./.kube
43M     ./.krew
3.7G    ./rancher
```
1

du --max-depth=1 -h . | sort -h

x3mboy · 2022-08-23 14:58:57 75

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 09:29:14 147

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
```
5

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

bugmenot · 2022-08-15 23:04:31 94
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 83
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 11:47:59 400
Convert indentation to tabs
This is sample output - yours may be different.
-1

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

swarzynski · 2022-08-02 10:16:47 258
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 09:28:38 368

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 12:09:17 124

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 11:50:59 102
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 05:24:33 189
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
```
4

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

ioshield · 2022-07-18 05:08:22 89
Cross compile C# code on Linux for windows machines
This is sample output - yours may be different.
-1

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

ioshield · 2022-07-18 05:03:49 80
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 11:20:57 114
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 18:58:46 152
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 20:39:12 180
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.
1

kali-undercover

ioshield · 2022-06-24 20:23:01 167
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 20:20:38 101
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 17:25:39 202
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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.

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pngcrush all .png files in the directory

Nothing too magical here, just uses pngcrush to losslessly compress all your pngs!

list block devices

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

Check which files are opened by Firefox then sort by largest size.

Check which files are opened by Firefox then sort by largest size (in MB). You can see all files opened by just replacing grep to "/". Useful if you'd like to debug and check which extensions or files are taking too much memory resources in Firefox.

Send a binary file as an attachment to an email

The uuencode utility will encode your file so that it can be sent as an attachment to an email. It is part of the sharutils package in RHEL/CentOS/Fedora.

Create more threads with less stack space

default stack size is 10M. This makes your multithread app filling rapidly your memory. on my PC I was able to create only 300thread with default stack size. Lower the default stack size to the one effectively used by your threads, let you create more. ex. putting 64k I was able to create more than 10.000threads. Obviously ...your thread shouldn't need more than 64k ram!!!

ssh and attach to a screen in one line.

If you know the benefits of screen, then this might come in handy for you. Instead of ssh'ing into a machine and then running a screen command, this can all be done on one line instead. Just have the person on the machine your ssh'ing into run something like $ screen -S debug Then you would run $ ssh -t user@host screen -x debug and be attached to the same screen session.

Query Wikipedia via console over DNS

Shorter version, works with multiple words.

search installed files of package, that doesn't remember his name well. On rpm systems

rpm, sometimes, is not wildcard friendly. To search files installed from package this could be useful. change PACKAGENAME to any package do you want to search

FizzBuzz in one line of Bash

The (in)famous "FizzBuzz" programming challenge, answered in a single line of Bash code. The "|column" part at the end merely formats the output a bit, so if "column" is not installed on your machine you can simply omit that part. Without "|column", the solution only uses 75 characters. The version below is expanded to multiple lines, with comments added. for i in {1..100} # Use i to loop from "1" to "100", inclusive. do ((i % 3)) && # If i is not divisible by 3... x= || # ...blank out x (yes, "x= " does that). Otherwise,... x=Fizz # ...set x to the string "Fizz". ((i % 5)) || # If i is not divisible by 5, skip (there's no "&&")... x+=Buzz # ...Otherwise, append (not set) the string "Buzz" to x. echo ${x:-$i} # Print x unless it is blanked out. Otherwise, print i. done | column # Wrap output into columns (not part of the test).

pretend to be busy in office to enjoy a cup of coffee

Create a progress dialog with custom title and text using zenity.

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