What's a handy terminal command you use often?

sudo !! to rerun last command as sudo.

history can be paired with !5 to run the fifth command listed in history.

cd then ls then cd then ls maybe I’ll throw a ls -a

I really like that cd command. :P

tldr because I am too impatient to read through man pages or google the exact syntax for what I want to do.

tldr is great. Basically a crowd-sourced alternative to man with much more concise entries. Example:

$ tldr dhcpcd

  DHCP client.
  More information: <https://roy.marples.name/projects/dhcpcd>.

  Release all address leases:

      sudo dhcpcd --release

  Request the DHCP server for new leases:

      sudo dhcpcd --rebind

I went a little overboard and wrote a one-liner to accurately answer this question

history|cut -d " " -f 5|sort|uniq -c|sort -nr|head -5

Note: history displays like this for me 20622 2023-02-18 16:41:23 ls I don't know if that's because I set HISTTIMEFORMAT='%F %T ' in .bashrc, or if it's like that for everyone. If it's different for you change -f 5 to target the command. Use -f 5-7 to include flags and arguments.

My top 5 (since last install)

g is an alias for gitui. When I include flags and arguments most of the top commands are aliases, often shortcuts to a project directory.

Not to ramble, but after doing this I figured I should alias the longest, most-used commands (even aliasing ls to l could have saved 2002 keystrokes :P) So I wrote another one-liner to check for available single characters to alias with:

for c in 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; do [[ ! $(command -v $c) ]] && echo $c; done

In .bash_aliases I've added alias b='hx ${HOME}/.bash_aliases' to quickly edit aliases and alias r='source ${HOME}/.bashrc' to reload them.

sudo udevadm monitor

Figuring out which usb device went on holiday.

Sudo !!

It reruns the last command as sudo.

Pretty useful since I'm always forgetting.

clear because apparently I am too scatterbrained to comprehend more than one full page of text in the terminal

Not a specific command, but I learned recently you can just dump any executable script into ~/bin and run it from the terminal.

I suffer greatly from analysis paralysis, I have a very hard time making decisions especially if there's many options. So I wrote a script that reads a text file full of tasks and just picks one. It took me like ten minutes to write and now I spend far more time doing stuff instead of doing nothing and feeling badly that I can't decide what to do.

pushd and popd to change directory and go back when done there.

After using too much WINE, I type pwd, whoami

Uhhh...sudo su

Don't be like me

pv (Pipe Viewer) is a command line tool to view verbose information about data streamed/piped through it. The data can be of any source like files, block devices, network streams etc. It shows the amount of data passed through, time running, progress bar, percentage and the estimated completion time.

clear. Constantly, and for no reason.

sudo rm -rf /

Very powerful yet helpful command :-)

cd every single day.

ls and cd

CTR + u will delete the whole command. I use that a lot so I don't have to backspace. It's saved me a ton of time

xdg-open FILE - opens a file with the default GUI app. I use it for example to open PDFs and PNG. I have a one letter alias for that. It can also open a file explorer in the current directory xdg-open . . Should work on any compliant desktop environment (gnome/kde).

sl

ls

On my desktop: df -h to check disk usage htop to see resource usage ll list directory contents

sudo pacman -Syu

diff -y -W 200 file1 file2

Shows a side by side diff of 2 files with enough column width to see most of what I need usually.

I have actually aliased this command as diffy

ctrl-r

searching bash history

du -sh * | sort -h

shows size of all files and dirs in the current dir and sorts them in ascending order so you can easily see the largest files or dirt ant the end of the list

ls -ltr

Shows the most recently modified files at the end of the listing.

nano

Not a command but bang expansions. For example !? is the args of last command useful for stuff like mkdir foo ; cd !?

https://www.redhat.com/sysadmin/bash-bang-commands learn these. you suck at using your computer if you don't know them.

I recently learned to use a for loop on the command line to organize hundreds of files in a few seconds.

Not a command as much as I press the up arrow a lot. I'm.pretty lazy and hitting the up arrow 12 times is easier then retyping a complex rsync command.

Btop is an amazing resource monitor

nmtui. But that's because my router is trash.

ll

df -h

du -sch

Ctrl+r

sudo

ncdu

Seems like an appropriate place to share https://github.com/agarrharr/awesome-cli-apps

I'm a fan of ripgrep and lsd in particular.

man
fd
entr
rg
gitui
nvim
tee
cd
mv
rm
ls
tmux
btop
yazi
du
xargs
cat
less

For Debian based/descended distros:

sudo apt-get update && sudo apt-get upgrade

And technically I also regularly use

redshift -O 3000

all of the blue light filter programs try to align themselves with a user's geographic location and time, but I don't keep normal hours

jq

g-push which is alias for

git push origin `git branch --show`

Which I'm writing on my phone without testing or looking

I've recently started using tmux when starting a new SSH session to try to build the habit.

https://github.com/tmux/tmux/wiki

ls -al

exit

I use atuin (link) all the time

Getting cheatsheets via curl cheat.sh/INSERT_COMMAND_HERE

No install necessary, Also, you can quickly search within the cheatsheets via ~. For example if you copy curl cheat.sh/ls~find will show all the examples of ls that use find. If you remove ~find, then it shows all examples of ls.

I have a function in my bash alias for it (also piped into more for readability):

function cht() { curl cheat.sh/"$1"?style=igor|more }

Alt + F4

GNU Parallel

I really like how nushell can parse output into it's native structures called tables using the detect command.

Unlike string outputs, tables allow for easy data manipulation through pipes like select foo will select foo key and you can filter and even reshape the datasets.

This is great if you need to work with large data pipes like kuberneters so you can do something like:

kubectl get pods --all-namespaces | detect columns | where $it.STATUS !~ "Running|Completed" | par-each { |it| kubectl -n $it.NAMESPACE delete pod $it.NAME }

This looks complex but it parses kubectl table string to table object -> filters rows only where status is not running or completed -> executes pod delete task for each row in parallel.

Nushell take a while to learn but having real data objects in your terminal pipes is incredible! Especially with the detect command.

There's are few more shells that do that though nu is the most mature one I've seen so far.

I do love fuck.

I use "ping" every time I suspect my internet might be going a bit slow.

history | fzf

qmv -f do ${dir}

... for quickly moving and renaming files. The default 'qmv' opens up your preferred text editor with a list of the source and destination name of the directory of files you want to move/rename. The '-f do' tells the command we only want to see/edit the [d]estination [o]nly. If you need to rename/move a bunch of files, it's much quicker to do it in vim (at least for me).

touch 😏

Going to shamelessly plug my custom bashrc setup which has a ton of little scripting helpers and a few useful aliases. Remember to clone recursively if you want to try it out. (Still very much a work in progress, but it's getting to be pretty robust)

https://GitHub.com/pyr0ball/PRbL-bashrc.git

du -sh /too/bar to get size of files/folders. sudo !! inserts sudo into previous command when forgotten. yay for full system update if yay is installed. cat reads files.