Shell Scripting Crash Course - Beginner Level

This is an intro to shell scripting with Bash. We will learn what shell scripting is and create a cheat sheet with things like variables, conditionals, loops, functions, etc. We will also do things like rename multiple files.
Cheat Sheet Gist:
gist.github.com/bradtraversy/...
Command Line Tutorial:
• Linux Tutorial - Basic...
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[@oosmanbeekawoo]

For those in a hurry! Till 6:13 he explains what is Shell Scripting and how it's done: In Windows, you create .bat files with a command on each line in the file so CMD executes one-by-one. In Linux, we don't use .bat but .sh, and also, we specify a Shebang so Linux knows what interpreter to use (the default is Bash) Till 7:45 he explains Variables (i.e x = "Text") and how to make Bash distinguish between letter 'x' and our Variable 'x' Till 8:49 he tells how we can prompt the user for input with command 'read'. Terminal pauses, until data is input. To display a specific message before the blinking cursor use 'read -p ["TEXT: "]'. (-p displays the "TEXT" you provide before it collects input.) To store the data input in a Variable write the name of the Variable at the end of the command: 'read -p ["TEXT: "] VAR'

[@smitmangukiya]

Thanks

[@stuffandymakes1648]

Technically speaking, in Unix/Linux/macOS, the file extension on the file name of the script is irrelevant. People can be opinionated about using it, but it truly is only a convention. What makes your script file an executable script in Unix-like operating systems is setting the execute (x) permission on the file. Then, the shebang line (#!) tells the system what type of file it is. The first two characters (sometimes they are each 16-bit) or bytes are called the file signature or magic numbers. The shell is using the exec() system call, which uses the magic numbers to determine how to launch the file as a new process: Binary file (run the machine code inside, depending on the OS) or text file (launch an interpreter as a new process and pass it the text to interpret).

[@realkarthiknair]

@@stuffandymakes1648 yep u dont even need an extension

[@idk-jb7lx]

bash scripts are more similiar to powershell scripts than they are to batch files to be completely fair. sure you can use them like you would use batch files in Windows but they're way more powerful than that since they're actual programming scripts and not just a set of instructions.

[@maindepth8830]

Thank u

[@aprilmintacpineda2713]

Thanks Brad, I really appreciate you doing these tutorials. I think KZbin should have more people like you.

[@raghulbaskar7746]

echo "Awesome Content!!!" >> Traversy Media

[@Skeleton-wn2zu]

NAME="Raghul Baskar" echo "Nice comment ${NAME}!" >> $NAME

[@KangJangkrik]

while 1; do echo 'Hello everyone!'; done

[@yersonlasso9754]

Not to be that guy but... file has no extension

[@hxz2776]

@@yersonlasso9754 file extensions are not really required much outside of Windows

[@adefioyes5692]

Nailed it fr

[@madferit1987]

Have I ever told you I love you man? Just what I needed

[@technofool3]

Thank you for taking the time to put this together. I learned so much from this, I really appreciate everything you put out.

[@rambo9769]

This tutorial is timeless. Wonderful and relevant after 2 years too.

[@NikhilMoreBCSE]

This is the best tutorial for bash scripting covered in such a short time. You really saved me

[@icon458]

I have a test in 3 hours' time and this guy just explained a whole chapter with 98 pages in 32 minutes. Thanks, man keep the videos coming💝

[@omarsuriel1112]

I can’t think of a more deserving person for all the success he’s got

[@origamicaptain5664]

I'm so happy that you aren't being condescending, but friendly as well. Clear, concise language. Much appreciated.

[@Ahmed-sv9sy]

Amazing video man ! I learnt so much from you by following along on my computer and I can definitely say without a doubt that I'm more comfortable with bash scripting basics after I watched your video. Thanks for the educational content Keep up the good work !

[@CreativeJE]

brad your tutorials are simple straightforward thanks for making everyone's life easier thank you

[@yesoreyeram]

OMG.. the quality and the content diversity of the channel getting improved in every video. Hats off to you.

[@naqeebghazi9412]

One of the best beginner videos for shell scripting. Doesnt over-explain. Great stuff!

[@fvgoya]

This is a really GOOD content. Thanks Brad! It is always good to learn more about something that I know. Always learn more.

[@notgate2624]

This was great and I'm happy with you changing up the material a bit. I've been wanting to learn more about System Administration and IT. I know this stuff is basic but it's still a good intro.

[@evilmorty-tv1xs]

Been waiting for this. Great tutorial Brad!!! Very useful especially since I use a arch distro

[@edilsonrj]

Waiting for the intermediate and the advanced one! AMAZING!

[@nafeemhaque3357]

You are awesome dude ! Thanks for making the world a lot easier.

[@flankattack5426]

Fantastic session - thank you Brad! This is very helpful.

[@mikeigoe]

Bookmarked - use Linux all the time in a job I'm now 3 years into and never bothered to learn this stuff when moving over from WIndows, even though I swapped out cmd for git bash a few months back on all my PCs. I don't have time to watch your KZbin videos anymore - that MERN course is taking up all my free time :D - great course btw: you have a wonderful, natural teaching style.

[@priyakdey7891]

Dude is the MERN from Traversy ? which one and where it is ?

[@omarislearning3329]

honest question, did you come back to it after you bookmarked it or nah? i am just wondering since i seem to never do when i bookmark stuff.

[@insideTheMirror_]

plus he's a hottie ;)

[@navjotsingh2251]

omarislearning I do come back to things I book mark. I’ve book marked a python cheat sheet, bash cheat sheet, calculus book and a data structures/algorithms website. I’m constantly going back to them sites, so having them bookmarked is helpful.

[@dineshkumarthirugnanam1301]

You just made things simple. Not confusing by putting too much into it. Got it what's needed.👍

[@heikokraemer2735]

On point, very compact video. Thanks a lot for this great source for a start into bash scripting!

[@kevinzhang8974]

simple and very practical .... you have covered top common syntax .... thank you!

[@asuezeigwe9381]

I was so lost watching other content on this topic as I'm a newbie You just saved me

[@ReliableRandy]

"I let my accent slip out a little too much there" HAHAH love it 19:57

[@johnlaurenceocong4754]

Only For iOS?

[@deadscenedotcom]

This provided a couple options and commands I haven't used yet. Thank you!

[@helaolange]

Uploaded 3 years ago... Brad, you are the best🐐

[@masihsadri]

Thank you, Brad. You are definitely the best teacher in the world.

[@manueljordan317]

Huge thanks for this video, simple and powerful to learn quickly!

[@gabriel_felippe]

Hey Brad, thank you! Hope to see these new tutorials!

[@volder1995]

I hope this helps me pass my exams at Shell,great tutorial!

[@coreyaudet9656]

There is so much Love and appreciation here, I was just poking around and was overcome with positivity.(I was losing all hope for humanity just prior) I'll be camping out here until I can reach an understanding of Bash without BashING something in the process. Thank you all for making it possible to enjoy learning and by supporting one another, we can all get the skills it takes to BASH Bash!

[@mohammadumair7778]

AWESOME TUTORIALS... Thank You so much for Uploading the Lesson!!

[@charlescai236]

thanks Brad. This is really a short and sweet piece of video and one of my best used half an hour.

[@Alessandro-nq3tm]

Amazing Brad! More on bash scripting please!!

[@joseluisbeltramone599]

Loved this tutorial! Basic as you say, but super useful. Thank you very much!

[@GurcharanDhillon]

Thank You Sir, the way you explain is awesome. It directly goes into mind. I learnt a lot from your tutorials. Much respect.

[@JimHenderson19]

Great content! I like the pace, just right. Keeps you interested without overwhelming. Easy to follow along. I subscribed!

[@amirnazari6427]

One of the best shell scripting videos! Coherent, Informative, right into the point, and time-saving.

[@fxstreamer238]

please tell me you know the WHILE loops in other programing languages right? and how on earth this while loop that he just read and wrote from his script doesnt need any explanation of what -r is? and what the condition of the while loop is? how is this choherent and time saving? I assume you are a programmer like myself

[@fayfaytu]

This is really a great video! It has everything for a beginner to know. Concise and useful!

[@manish-mk]

It's always so interesting to learn from you. You are great teacher. I have huge respect for you

[@aisaacbruno9660]

it's refreshing to watch a 30 min video that I actually wanna watch, thanks for this video, I'll have a job interview about shell today :)

[@Super_Cool_Guy]

HI Brad , great video , will there be anymore videos on shell scripting ? we would like to see more from basic to advance levels .. thanks man ! 😊

[@EddyVinck]

I recently learned how to setup my own VPS with NGINX and Node on it so this couldn't have better timing, will watch it soon. Thanks Brad.

[@rokzabukovec4685]

Just in time Brad! I got a paper due on sunday on bash scripting :)

[@brianadams2862]

Lucky you were

[@metdelta1]

@@brianadams2862 Did we meet in The Summer of 69??

[@brianadams2862]

@@metdelta1 Nop

[@cherrydrop7025]

Revisiting for a great refreshah. I remember watching this at random when I started at a startup based in Boston... gave me the full MA experience. Love the accent.

[@robertofolikwei23]

just in time, towards my preparation towards my eCPPT certification.....simple and understanding ...big thanx

[@jackjax5606]

Good stuff Brad...You always know some good content is coming up once that transition music starts. And you never dissapoint. Big up on the new content, i've always enjoyed your tutorials. And i cant wait for the JAVA stuff...lookin forward to it

[@foodums]

Every time I click on Brad's videos I like it before the intro even plays.. Here in 2020

[@ssaran2]

Thanks Brad. I was always scared of learning bash scripting until I watched your video. Subscribed :)

[@snxexwinterx5570]

Thanks for making this man..been looking for a good beginner bash tutorial.

[@aylliumrin7861]

Awesome vid. I like the idea of the channel branching out. There is so much stuff out there and it keeps things fresh.

[@demetter7936]

My name is also Brad so for a split second it freaked me the hell out when you said it.

[@sreemathir5194]

The BEST tutorial for beginners! Thank you!!

[@nacdan6451]

Great video as always. I'd love to see some C++ tutorials!

[@siddharthsoni1862]

This is an awesome tutorial. Thank you so much.

[@carloszetula2307]

Thanks man! I really need this information, I’m new to bash but I know a little about old ms-dos

[@ericedlund3140]

You just saved me a $20 course online, thank you.

[@alphaomega4434]

This was really good, I appreciate it you branching out

[@Marius5404]

This was amazing! Thank you!

[@CYB3RC0RP]

Probably the best video I've found on the subject so far.

[@mblackonline1059]

Thanks so much for making this! The examples were very helpful.

[@davidconnelly]

That was good. Thanks! I really like the idea of venturing into other areas. The ultimate for me would be to figure out how to write programmes that USE other programmes. However, I'm not too sure how to go about that.

[@daoviettu2334]

Very practical! Every basics are all here!

[@MarkJay]

thank you for making this Traversy Media!

[@user-di4bt7qu2i]

Great video, thanks for posting. As usual, lots of good info to get me started and point me in the direction to advance. Thanks man!

[@mdullash2116]

i don't feel bored any time of learning from your channel...

[@legendplonski8758]

Just listening to this man speak calms me down. You get my like sir.

[@Mohamed-uf5jh]

Great Job , easy to follow and very helpful

[@AyushKumar-yk9fw]

Awesome tutorial! Nailed it! 🤩

[@adriantan1134]

Thanks. Very good and straight to the point tutorial.

[@sfutrell2339]

Thank you! I am cramming for my Linux +exam and this helps a lot!

[@marklambert2777]

In most of these beginner tutorials, I never see grep. That was one of the first commands I extensively used and is quite a simple one to explain.

[@eoussama]

Just when I wanted to get into bash, nice tutorial Brad.

[@anggasukmabahari6342]

Amazing video. Thank you sir, so helpfully!

[@khalidelgazzar]

Awesome refresher. Thanks Brad

[@keithberjeron763]

Thank you so much for this video. I'm new to Linux and I've been eager to script. My only experience with scripting came from mIRC from when I was about ten, and a text- based game builder called adrift. I'm happy I'm trying Linux and this video makes Me excited to explore the possibilities.

[@omerkaraca1825]

You are really great as usual !! I immediately liked the video. Fortunately, you are here. Thank you very much for eveything..

[@yvzc4n]

Thanks Brad awesome Video as always

[@kauthamkrishnan982]

This is so helpful for a beginner. Thanks!

[@zacharymiles4300]

Great video. Your teaching is very easy to follow.

[@BobTrieste]

Brad all of your videos are great ! Thank you

[@AniBOTSBrothers]

This was really cool!I hope you do more videos on this!

[@melsaied101]

Thank you so much, it was easier than I expected, or you are such a good teacher :)

[@CheiithooCat]

Love this channel... great job man

[@derekbaker2099]

Really enjoyed this and it was super helpful! Thank you

[@user-if2qe8mf8s]

Good job Brad! :) Java tutorials is a great idea, we'll be waiting :)

[@priscaonyebuchi5825]

This was amazing. I wish I found this earlier. Thank you so much!

[@benardadhinga8714]

What a genius! A natural!!

[@cavinalbertbelga5090]

Great tutorials as always!

[@ruchiradhar1589]

This is honestly one of the best Shell Scripting tutorials out here. Thank you so much for this amazing video, it really helped me a lot!

[@abdullahahmed8468]

i have loved this Crash Course video because it has rich content with real case examples

[@ericjaniak1015]

Much respect to you, you give me a lot of useful tech.

[@rauljg143]

This was fantastic, thank you!

[@sayanmallick2644]

Love your Tutorials. Keep up the good work. One little request, can we please have a kubernetes tutorial. Please.

[@lee_johnson]

Your teaching style is awesome man

[@Gwittdog]

Love the video! thanks for all of the awesome videos

[@leosmilesu2]

God bless you, Brad@Traversy Media. Thank you.

[@sergeynaruzhiny7422]

awesome course, and good cheat sheet. thanks a lot