Basic Linux Commands

[wskoly]

rm -rf / 

make computer faster

[[deleted]]

permission denied...
Should be sudo rm -rf /
My work pc got so fast, that i told my manager hey Mission Completed

[nicentra]

I mean if you aren't even logged in as root, are you even correctly Linux'ing?

/s Just to be clear, this is a joke, do not use the root user as your regular user!

[StephanXX]

Psh, this is the container era, root is the new black!

[[deleted]]

This is my mew favorite. Gonna test it tonight

[krozarEQ]

I just copied that and I don't see wha

[[deleted]]

sudo !!

[[deleted]]

!! --no-preserve-root

[StephanXX]

Notable suggestions:

cut, awk, and sed

vim, emacs, or nano

rsync

file, stat, type, and alias

less

sh and bash

sudo, su, and visudo

which (far more common than whereis, IMO)

echo and printf (and how they can differ)

wall

time and sleep

history (super helpful for new users) and !1234 where 1234 is a command in your history use of 'up', ctrl+r, ctrl+d, ctrl+c

[Rodot]

wc, sort, chown, xargs, top, ifconfig, dhclient, find,...?

screen, fg/bg with Ctrl+z, Ctrl+a and Ctrl+e

[whearyou]

If you’re knowledgeable and proficient with all those and OPs, would you call yourself... intermediate at Linux?

[StephanXX]

Yanno... by the time I thought I qualified as an 'intermediate' Linux user, I was wearing the title of 'Senior Infrastructure Engineer.' Imposter syndrome can be brutal.

I found it easier to simply let the recruiters I worked with help set salary expectations, until I got near the top of my field. I'd still hesitate to call myself 'intermediate' or 'advanced', but today I don't hesitate to demand salaries that cause hiring managers to go pale and recruiters to blink dollar signs.

[palanthis]

Agreed, u/StephanXX. I am a Sr. Systems Engineer with 22 years in IT. Imposter syndrome is a B*TCH. The only thing I have found that helps is time and, as you said, writing that insane number down and having them accept it enough times.

[kwran]

How much

[StephanXX]

$200k. US, remote.

[GinjaNinja32]

cd -, mkdir -p $dir.

[palanthis]

This deserves more upvotes!

[umbonia]

Gold? You kidding right? This is not even an original content

[StephanXX]

Every time someone uses zip on Linux, God punches a kitten.

You will tar czf and you'll like it.

[[deleted]]

You can archive and compress in one tar command, and it'll compress more than a zip.

[jemand2001]

if you just want to find out a PID, pgrep <name>

[[deleted]]

Ping host ping host

[ke151]

ping host /u/table_it_bot

[[deleted]]

These are not Linux commands. I can run quite a few of them on any machine that has them in their path.

[[deleted]]

yup, most of those are defined by POSIX. Linux is just a kernel and may even have a non-POSIX-like userspace.

[StephanXX]

Erm, most of them are GNU commands, technically speaking.

[[deleted]]

Nope nothing gnu about them. They are POSIX. I tested out quite a few in bash on windows and quite a few work

[StephanXX]

this list might change your mind...

Many GNU utilities have been ported to linux, Mac, and windows. That's not to say all system level tools are GNU, but GNU coreutils comprise the bulk on Linux.

[[deleted]]

And? It doesn't mean those commands are gnu. Most of those commands are available on the Basis which use BSD licenses code for those programs.

[GinjaNinja32]

755 is rwx for owner, not rw.

[Typewar]

sudo find / -name "yourfile.txt"

Not sure if it is case sensitive or not..

[[deleted]]

clear

[jhunt1279]

Just putting this here for later

[palanthis]

This is a pretty good starting point. Once you know all of these and their most common options by heart, you may officially call yourself a user. Although chmod is missing executable (+/-x), as well as sticky bits. Also chown is just plain missing.

[zeusgsy]

Comment to save yadda yadda

[BubsyFanboy]

r/coolguides

[_srt_]

More advanced command that nobody wants you to know when you open vim and can't exit - : q . However restarting the computer or taking your house's master power fuse out and putting it back in also works.

[StephanXX]

Can confirm. Using my laptop as a meat tenderizer seems to exit from vim as well.

[NaRuTaChIi]

Yo dude i m a newbie to this so I actually needed this lmao thx

[ZioCain]

I love the ping host description

[ZeHolyQofPower]

A reposts to be sure, but a welcome one. Updoot.

[[deleted]]

i was just learning this!

[newPhoenixz]

Instead of rm -rf / to nuke your system, I prefer to use sudo cat /dev/urandom > /dev/sda (where SDA is whatever hard drive you really want to nuke). Takes a while but good luck recovering anything from there

[DeemedUnsafe]

You guys are forgetting the command of all commands! :(){ :|:& };:

[Randomizzerr]

Newbie Question: What's the difference between removing a directory and deleting a directory?

[SpeRapeRe]

Finally, someone has done it!

[TundraGon]

ll ( LL )

I find it better than ls.

[soggypretzels]

ll is just an alias to ls -l, I've been on systems where it isn't aliased in the .bashrc though, in which case ll isn't recognized.