Linux and macOS Command Line Basics

[@bokkenka]

A little misspeak... `cd ..` takes you UP one directory, not technically BACK to the PREVIOUS. If you step down directory by directory, going up and back are the same thing. But, you can `cd` anywhere with a valid path argument. If you are in /home/brian/demos, `cd /home/brian/files/videos/uploads_for_youtube`, then `cd ..`, you will be in /home/brian/files/videos. `cd -` takes you back to the actual previous directory.

[@ooloncolluphid9975]

LOL at the "rm -rf" reflex at 8:17 :D Keep up the good work!

[@EngineerMan]

Yeah pretty rarely do i just do -r.

[@ZacKoch]

I still remember "less is more, more is less" I amended "less is more, more is less, but if more is less why would anyone wanna use more?" 😂 Great vid as usual!

[@brainplot]

Apparently `less` has become a pretty big program over the years and some embedded systems may not have `less`, as per this answer: unix.stackexchange.com/a/81131/222786 Thanks for this comment. It inspired me to research.

[@moegreenback6854]

I wanted to thank you for this video. I have seen many commands and they seem confusing but you made it appear easy. I literally typed commands on Mac and Linux as I listened to and watched your video. Very informative.

[@FidgetTheMidget8P]

I've learned more about python and linux after 30 minutes of watching your videos than I have in hours of reading forums and how-to's

[@1donnelly]

I like “sudo !!” for running a command where I forgot sudo.

[@bashisobsolete.pythonismyn6321]

timely video as, i am relearning shell stuff right now. finding it easier to learn fish and have also read good things about the openbsd ksh.

[@mattcall90]

You should do an advanced terminal commands video

[@EngineerMan]

I intend to. Stay tuned for that video.

[@folksurvival]

@@EngineerMan Looking forward to it.

[@brainplot]

`less` (and pretty sure `nano` as well) can also scroll up and down using J and K or CTRL+N and CTRL+P, which are the vi and emacs bindings respectively. Some people may find it easier/more natural that way, compared to arrow keys :)

[@X19-x5f]

Lots of great info. Thank for posting this.

[@celestialbeing4767]

A decent introduction. You said just the surface sheesh. So mkdir is basically making a folder, touch making a text document. Question were you doing these commands through tmux or was it straight shell commands?

[@EngineerMan]

In this video I did everything through bash. Although due to the simplicity of the commands, which shell isn't super important. All these should work in all shells. tmux is just a program that lets you have one or more terminals within a single terminal.

[@notusum1else]

Damn good introduction 👍🏼👍🏼

[@richardlizcano3671]

Hello I am just starting to learn Linux. I am having a problem when I’ll type a command and I guess it was the wrong command and it brings me down to a blank line If that makes any sense. Is there anyway to go back up a line in Linux?

[@eryangmit]

Great video, very clear and helpful.

[@csmole1231]

sir you are what rhino the hamster in movie bolt would be like if it's a person! (i think) hehehee also thanks for this vid, it's concise and compacted which is precious!💛

[@DailyBeatings]

You can also re-run the command in history with an exclamation point in-front of the line number. So I can re-run "nano text.json" with "!1089". If you want to run the command as root then it's "sudo !1089". Behold, the power of *nix.

[@VulcanOnWheels]

4:34 I would have called it the "parent directory."

[@halfpint2413]

At 11:47 you put a colon after brian. Does this do anything special? Because I tested it myself with and without it and saw no difference, and was wondering if there was any reasoning behind it. Thanks.

[@EngineerMan]

Yes. Generally speaking the format for chown is `chown user:group`. There's other options though: chown user - set user only chown user: - set user and group to the same thing chown :group - set group only So what you saw me do was the equivalent of chown brian:brian.

[@atldude12345]

fantastic as always engineer

[@SnortDefence]

What theme you using for your terminal.. Directory colors are showing different.. I would like to use same

[@tommyshon6720]

I just need to ask... what linux distro or terminal do u use? I discovered u today and watched few of your videos and absolutely love that “programme” which u use for your programming, can you please tell me which one is it?

[@EngineerMan]

I use Atom to write code in. The terminal you see in this video is just the one that comes with Xubuntu by default (it's called xfce4-terminal).

[@tommyshon6720]

Ty a lot, I want to start programming and I hope u help me a little bit 😅

[@PCCenterNetworkSolution]

Long time viewer here from the philippines... quick question.. can i open ADB or debugging option on andriod using shell command?

[@EngineerMan]

Turning on debugging has to be done from the phone, this is a security feature. Otherwise opening a shell into any Android would be as easy as plugging it into a laptop.

[@PCCenterNetworkSolution]

@@EngineerMan i wish i could bypass andriod security... thanks... appreciated... my work would be easier and migrate to linux...

[@PCCenterNetworkSolution]

Hey... fellow creator here... love the way you explained things... i teach diy for electronic and electrical, and alternative power, also run a small shop that host 5-10 out of sch. Student computer class from operation repair and basic office operation.. i know how to run the basic of linux but... i wanted to teach my student how to use linux properly and advances my skills in linux.. if you do have free time.. kindly email me at [e-mail] Thanks appreciated

[@PCCenterNetworkSolution]

Opps forgot to tell you that i teach for free completely free...

[@CamStansell]

awesome mate. love it

[@Waves-mz3nv]

I have never heard someone over complicate Linux commands so much.

[@pandabuddy1655]

Thanks. Hello man. Have very differences between line commands of Linux and Mac?

[@mattcall90]

you can also abstract cd .. further by doing cd ....., which will take you up 5 directories (or as many levels as you wish)

[@EngineerMan]

This might be a built-in that's specific to your shell.

[@mattcall90]

Oh I use zsh, that might be why

[@azaydhingra]

Very good refresher!! What are the techniques for fast editing inside a file. How do you comment multiple lines together, or replace or delete.

[@EngineerMan]

For basic editing I use nano. For text processing, I'd reach for sed and awk.

[@blacksheep3880]

Which Linux he uses ?

[@EngineerMan]

I use Xubuntu.

[@intheshell35ify]

So I'm gonna need you to keep doing that same thing for another 10 hours if I'm gonna pass my final.

[@pythonSefer]

Why doesn't he have more subscribers

[@wolvAUS]

You can add WSL to that title :D

[@EngineerMan]

I would never do any such thing lol.

[@wolvAUS]

Engineer Man heh it’s not too bad tbh

[@SarkarMotion]

Wait, you can do this in MacOS too?

[@1MinuteFlipDoc]

yes, all the same commands!

[@moegreenback6854]

Surprisingly some work on Powershell like “pwd” and “whoami.”

[@DailyBeatings]

@@moegreenback6854 It's called Powersmell, because it stinks.

[@aurider1322]

please do a video on jq command line tool.

[@EngineerMan]

jq is such an underused tool. It's a shame.

[@VE3RGO]

Until EM gets around to it. Here is one tutorial on jq. Just watch there are errors in the copyable field blocks in the article but the screenshots are correct. Plus found a bunch of other videos and tutorials, but none with EM’s awesome style and delivery. www.howtogeek.com/529219/how-to-parse-json-files-on-the-linux-command-line-with-jq/

[@GooogleGoglee]

What a "high content" video to open with a "hi engineers" 😅😅😅🙊🙊🙊

[@shevinhathwyck]

Can you make a game

[@shevinhathwyck]

Through python

[@madhousebaby]

Can you hack apps ? Cash cash cash paid

[@georgeprout42]

Great idea Brian, but the basics were presented too fast for a newbie (sudo definitely is not a newbie command) Like for the idea all the same.

[@larsrosenkilde7872]

Sudo rm -rf *

[@nalidbass]

Thank for this nice tidbit. Trying this now ...

[@demipy]

@@larsrosenkilde7872 sudo rm -rf /

[@larsrosenkilde7872]

@@demipy you specify the root directory, the asterisk is a wildcard and is everything

[@demipy]

@@larsrosenkilde7872 everything in the folder you're currently in - so an rm -rf * at the working dir of /home/userX is more or less harmless to the system - rm -rf / will kill the system