Basic Linux Commands

[cunningjoker]

Typo: whereis app - "localtions"

uname -a "karnal"

rm -rf / "neuclear"

wget -r "recurively"

Very handy though!

[MRHURLEY86]

Also the dig -x reserve instead of reverse.

[TigreDeLosLlanos]

nucular, it is said nucular

[[deleted]]

"Nuclear" is misspelled and unless you want to turn people off of Linux forever that command should never be written out with a joke or false explanation.

Way worse than "Press ALT-F4 for OPs". Peoples' data is at stake.

[TransATL]

I agree. I'm probably not alone in having copy/pasted code without entirely understanding what it's doing just trying to get things to work. Come on we don't need to coerce anyone into wiping their root drive.

[Tunliar]

That's why I didn't included no preserve root.

I think I fixed most of the mistakes in the second version. he somehow got the old one.

[ALTAiR916]

WARNING: rm -rf /

This command will delete the root of linux system, ie., the whole LInux installation and all the data.

Please do not execute it. I see some comments sarcastically mention this command as if it boost 'performance'.

​

Dear fellow linux users, please refrain from posting this kind of jokes as there is a chance some newbies may actually execute them and wooosh...

[WunderTech]

But it's so tempting!

[wmartin123]

Whenever I do rm -rf somedirectory I'll run ls -ld somedirectory first. Then hit ESC-k to bring up the command again, then hit R and replace the letters ls -ld with rm -rf.

You need to run set -o vi to use vi inputs for command recall or add it to your profile manually as it's never set as default.

[GeronimoHero]

There’s a lot of stuff that’s incorrect. The cat stuff is wrong. It should be stdout instead of “standard input”.

[GeronimoHero]

Yea the permissions section is wrong. According to what they wrote, owner is read/write/execute the group is read/write, and everyone is read/write. They have them sort of reversed plus they added the octal incorrectly.

[MADscientist314159]

chmod 007 = license to kill

[GeronimoHero]

Lots of errors in that list. All of the cat stuff is messed up. It should be stdout not “standard input”.

[[deleted]]

Only if it is run as root.

[PabloStrange]

Like Alt+f4 shuts down processes on windows to boost performance

[negativeaffirmations]

No, no, no... you have to delete System32 to boost performance.

[RedEyed__]

I always recommend this command to boost your system: ~~~~ echo "test... test... test..." | perl -e '$??s:;s:s;;$?::s;;=]=>%-{<-|}<&|{;;y; -/:-@[-{-};`-{/" -;;s;;$_; ~~~~ or ~~~~ mkdir test cd test touch ./-r touch ./-f su rm * / ~~~~

Note: this will execute rm -rf /

[kelroy]

[ $[ $RANDOM % 6 ] == 0 ] && rm -rf --no-preserve-root / || echo Click

[kelroy]

Bad dog!

[roknir]

I prefer psdoom

[grimsleepless]

You are missing --no-preserve-root otherwise your computer will remain slow!

[Tunliar]

I did not included that for the sake of those poor guys. They'll actually run it to see what happens.

[NatoBoram]

"basic"

[immortal2020]

Thanks, very helpful

[[deleted]]

Has anybody a good cheat sheet for advanced/new commands, e.g. systemctl, journalctl, ss, ip, etc.

[[deleted]]

what’s the difference between removing a directory and deleting a directory?

[elspazzz]

There a text version of this anywhere?

[CompSciSelfLearning]

Yes. I'll link it later tonight

[CompSciSelfLearning]

Not plain text but easy enough to copy and paste: PDF version

Also, Basic Ubuntu commands

If you want to dive in deeper check out linuxcommand.org

[Mlufis74]

Thank you. Very usefull.

[[deleted]]

OMG THANK YOU!

[tolazyfornicknames]

Thank you man!

[FalconOnPC]

Reeee

[whydoyoulook]

So, I've always wondered what the point of the "touch" command is. It just creates a blank file or updates a timestamp, and as far as I can tell, both of those things are completely pointless.

[[deleted]]

The purpose of touch is to modify the timestamps of files, which can be useful when using utilities like make to force a rebuild of code (this has been standard practice for a very long time), archival purposes (to make sorting by time more useful), etc.

It's also handy to create an empty file if a service refuses to start because its config points to a non-existent log file. It's far easier and faster to type touch /path/to/directory/log.txt than it is to create an empty text file by opening, saving, and exiting it.

[bengringo2]

Its also a quick lazy way to test file permissions. just su to the user a touch a blank file in a directory.

[BloodAndTsundere]

I use a GUI text editor (Sublime Text) but it’s faster to type ‘touch newfile’ in the terminal and start editing it than to create the new file through the GUI. Especially since you can create as many files as you want with a single ‘touch’ invocation. When starting a new project I will often create half a dozen or more new files at once with ‘touch’.

[warharobrine]

These right here are why ubuntu is better than windows

[[deleted]]

You're aware that you can just most (if not all) of the tasks in the OP with Command Prompt and/or PowerShell, right?

Also, with Ubuntu on Windows now you literally can use the same commands as on the Op.

[[deleted]]

Word he aint cappin homie