Shell Basics Writing a Shell Script Linux Tutorial 5

Writing a Shell Script - Tutorial
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[@trope584]

Like fine wine you are getting better with time kudos

[@DontEatTheReaper]

I definitely would like more basics videos. These have been great. As a beginner, I appreciate something like this learning format, instead of just looking up random info pages.

[@user-gw2qn1yd6u]

Very detailed, helpful for us beginners

[@Cameron9242008]

I got in a little on this series but as usual i am not disappointed. Please continue as this is a fascinating subject,

[@Cilmaen]

Absolutely brilliant sir. Thank you for taking the time to share. More please.

[@DoodahGurl]

Really enjoyed how all the prior tutorials are now coming together. You're awesome, Kris! Have a Nice Day! LOL

[@kulbhushansharma5832]

informative channel with lot of basic information how to use linux and shell .... Thank to you Sir... appreciate your teaching skills too.

[@takwiannoh6712]

Wow! This is what i really want to see on you tube. Thank you for that because now can write a basic script . Thanks to you.

[@takwiannoh6712]

I need more please

[@quirosvillalobos2974]

I think that the shell script video by Kris Occhipinti was very good. I could use more "basic material" as I am new to this field/area. I am trying to learn Linux. Thanks, Quiros

[@dodo3773]

Probably worth mentioning for new people: if you don't enter your script with a .sh file extension then you probably won't have syntax highlighting (colors while you are scripting) because your editor won't know what to highlight as. Or you can go in and enter the "#!/bin/bash" and save, exit and go back in and it will be highlighted. I like the way you do tutorials and wish there was more stuff on python. Seems like a lot of programs on my system are python when I poke around.

[@oleksaoleksa2216]

Thank you! I have just started with Unix and there are a lot of people who need basics :)

[@marccometa112]

The series of videos was great! Thanks Kris! ( that "wq" though at 9:10 mark then you giggled! Haha! I am a VIM user too ;) )

[@MrMrcunny]

Thanks!! Great Instruction, I do not have nano. Pico looked identical , except for the text colors almost identical in behavior. it is nice to know that there is yet, another option besides Vim,and Emacs. I usually use vim, still getting down the mechanics. Emacs is a ways off yet. And to use bash made it even more achievable. This level of instruction had been "JUST" what I was looking for . Looking forward to them all. Thanks Again.

[@DigitalMetal]

I will hit that in a few weeks when I do the next batch of Shell Script Basics Videos.

[@onethirty130130]

Just starting shell basics, so far so good :-)

[@lingabing]

Oh thank you so much! Your video was very easy to understand! I will be supporting and watching your videos to help me through class lol

[@Toydeathray]

This is great! Im new to linux and scripting, thank you i wouldn't know what to do!

[@Knuspertoni]

Thanks Kris! Your posts are just the right thing to step into bash-scripting. The new videos are so much better than the old ones... One question: if one does not know about all parameters of a bash function ( e.g. you often use -n or -e for the "echo" function). Is there an easy way to list all parameters of a function in the bash?

[@merajkhalidkhan]

Thank you Kris. Great tutorial on shell script.

[@Perciwell]

I'm not sure if you like to make a video about this subject. I'm not a beginner, but I'm struggling to understand all the stuff concerning variables in Linux. The differences between local variables, environment variables and shell variables. It becomes not more clear when a good and competent author writes environment variables are sometimes also referred as "shell variables". At this point of reading I have felt a little bit despaired. *There are several questions, if I hear or read something about variables. E.g.:* - Ok, local variables, but local to what? In some programming languages there are also variables which are local to a single function in a script or even local to a code block or loop or if clause. - Ok, environment variables. They seem to be something like nearly global variables, because they are known by any child process of the shell (Or script?) in which they were defined. - Ok, shell variables. Which shell is meant? The current bash session? Or the login shell as something like the grandfather of the current running shell? At which point will they be defined. I'm currently not totally sure. And what the heck is the difference between the output of set and env? Can env be used to set or delete variables? Or can set used in this way? I will get the hang of it - sooner or later. Anyway. Thanks for your videos! :-)

[@PawanKumar-hf3dh]

Thank you very much ..... Thanks to you I wrote my first script Buddha bless you

[@DigitalMetal]

No Problem. :)

[@DigitalMetal]

Yeah, I need to work on my Python. I love Python, but currently I'm learning Java and C, and I'm trying to get better at JavaScript. Lot on my plat right now. But, that just means new things for tutorials in the future :)

[@danqingchen5225]

it will be really great if you can do more tutorials on shell script thanks in advance

[@alanjaf9879]

Thank you for been so easy to understand. God bless

[@DigitalMetal]

You are so welcome

[@DOLUSXXX]

Excellent lesson teacher!

[@DigitalMetal]

I would, if I really knew more. I mean, they are all similar. They would be used for the same things, but some syntax would be different. I've mostly used BASH. I've been using zsh for a few months, ever since I tried GRML (if you haven't tried GRML, you should check it out). Mainly zsh is just super awesome at auto completion and a few other things. And, the only time I've used sh is on really stripped down systems (mostly devices that run linux. Phones, routers, etc) but I'll look into it.

[@dodo3773]

Sine most of my other system applications are written in c I would be happy to see more tutorials on that as well. Especially compiling and inserting custom built modules (something I am hacking on now (macchanger issues with eth0 driver bleh)).

[@HigherPlanes]

I do the random word capitalization too lol! Glad I'm not alone.

[@DigitalMetal]

I'll put it in my list. And there are a number of ways. But for now give /etc/rc.local a look over.

[@centaur.3603]

very helpful, Krish! thanks a lot!

[@peymanyeganeh996]

thanks buddy it was helpful

[@mohammedalshehri1235]

Man, you are doing great job. I am so thankfull to you. Could please tell me where can I find more videos for you on basic lessons. I also wanna ask you if you have a tutorial on Linux Programming Interface. Thank you a gain Millions Thumps Up,

[@mohammedalshehri1235]

I got the basic staff Kris.

[@cambotandclay]

I really like these vids. I hope you do more. Especially since it's not juut lines in the prompt. I want to learn to use BASH (or any linux shell) to automate things. To help me learn everything I can do with it rather than simply use directories, etc. I have a whole bunch of programming stuff I want to learn and shell useage and automation is very essential IMO. I want to run scripts from programming languages I learn. (By the way, if I nano #!/bin/python will that run a python script or do I need to setup/import a python interpreter?)

[@ShantanuJain007]

HI Kris, Please continue with intermediate stuff.

[@haranadhprathipati6328]

hello sir super videos,i want more videos how to move

[@shahrukhrahmankhan7860]

THANKS FRIEND! SCRIPT WORKS FOR ME...

[@kennethhowell5291]

Thank you very much! you are a lifesaver!

[@lekhapora3535]

great this tutorial helped me thanks once again

[@JD-hx2dp]

Great tutorials!!! Thanks

[@xingkitty23]

Very helpful. Thanks!

[@Mapleaph]

very good, Thank you very much!

[@XwyxX]

nice short easy understand and funny awesome :)

[@ecreeth]

Gracias por tu aporto amigo!

[@spschoolpluscafe]

great video, but please upload the rest of the videos. thanks.

[@DigitalMetal]

Rest what videos? I have almost 1,600 video and I upload new ones every week. Have you really watched them all?

[@GreenHornLinux]

Great video, thanks for sharing!

[@Eric88533]

Hi Kris love your vids. Can you give more different examples on this topic? and can you include as well variables, loops and conditionals. thanks, appreciate it. ps. I am new in linux ))

[@DigitalMetal]

I have hundreds of videos on Shell scripts put into different playlists and I go over all those topics. My latest playlist is here: kzbin.info/aero/PLcUid3OP_4OV46dBG6R2AvV_-QyB61WRH Although you can always search through all of my videos on my website: filmsbykris.com

[@FlorianSchauer]

Good Video

[@MAKE_MONEY_BY_FREELANCING]

Good one..

[@DigitalMetal]

Thank you

[@josephdaniel1999]

Thank you! Helped a lot ^_^ You got a sub :D

[@DigitalMetal]

no problem

[@josephdaniel1999]

Kris Occhipinti I was wondering if you did a video on "chown" and "chmod". Thanks!

[@HollywoodUndeadV]

thank you Sir !

[@adityasinghverma4765]

Amazing! Thankyou! :)

[@DivyanshSinghK]

Excellent

[@puppy_BYTE]

very informative, how is echo different then echo -n ?

[@shivesh105]

Thanks!! a ton...

[@SudeeptoDutta]

At 13:14 why there are two lines instead of just one ?? I only got "James favorite color is Red."

[@shilinjiang589]

very helpful!

[@harrysingh2742]

Hi Kris, great video series. Question - why are semicolons missing in the script?

[@DigitalMetal]

+Harry Singh Which semicolons are you referring to?

[@harrysingh2742]

Kris Occhipinti the ones you put after each echo in earlier videos..

[@DigitalMetal]

Harry Singh Do you mean this video? kzbin.info/www/bejne/n3qxlZSfot6JmtU If so, the semicolons in that video are to separate commands that are on the same line. Here I've placed the commands on separate lines, so there is no need for semicolons. Normally in scripts you will put separate command on their own lines to keep things organized and easy to read. You can still put semicolons at the end of each command, but there is no need to do that (in shell scripts). If that is not the video you are talking about, and you are referring to some other semicolons, please let me know.

[@harrysingh2742]

+Kris Occhipinti Yeah, it's the same video I was talking about.. got it, if you put two commands in one line without semicolon it won't work, both in shell as well as the script, but a new line character without semicolon seems to do the trick.. can you shed some light on that?

[@DigitalMetal]

Harry Singh There isn't much more light to shed. It's pretty much what you just said. New commands are indicated by either semicolon or a newline.

[@galaxxy09]

sweet! more tutorials! :D

[@mathewrockz44]

you are great :)

[@spschoolpluscafe]

I mean videos on shell basics. I have watched up to only tutorial 5. do you have tutorial 6 and beyond on Writing a Shell Script Linux?

[@DigitalMetal]

Well, there is an annotation in the video that will bring you to a playlist with about 30 videos in it. But, I have a few hundred videos on the topic Shell Scripts/BASH on my KZbin channel. All you have to do is look there: kzbin.info

[@lifeisworth3838]

love ur videos. really really gud buddy. May God the Almighty rewards u for ur work. got a question though i did the way u described nd it worked out well except attributing it to another file. it looks that way: echo "$name" >> indtroduction.log

[@DigitalMetal]

+lifeisworth by attributing do you mean appending? Your code looks correct. What is the problem you are having? It is working, just not in the way you thought it would, or is it not working at all? Are you getting an error? I can't help you if I don't know what they problem is.

[@lifeisworth3838]

yeah yeah, dats what i mean. the file isnt being shown in the directory when i ls dats mean i dosnt exist, so there is no way to open it. Btw, many many thnx for rapid reply :)

[@DigitalMetal]

lifeisworth Well, what you typed here look correct. It should be creating a file. Only things I can think of is that either you are typing it different or you don't have permission to right to the folder you are in. Either way, I would think you would be getting an error of some sort. Could you take a screen shot and of what you are doing and send me a link to it?

[@lifeisworth3838]

thnkuuuuu it worked dont know what the mistake was, but it works now :))))

[@rusher727twins]

Hi. How to write shell script of FCFS/FIFO algorithm in Linux? Can you please show me the shell script? Thank you...

[@vnsmur31]

Great videos!! How do I delete scripts? I made a few in the vi editor and I am trying to figure out what command I need to use to remove these. Thanks!

[@DigitalMetal]

+Nessa M You would delete them like any other file. In the shell that would be the 'rm' command. so something like this: rm myscript.sh

[@vnsmur31]

+Kris Occhipinti thank you for your reply!

[@vnsmur31]

+Nessa M I am trying to figure out why I can't locate my etc/inittab file. I am trying to view the file that contains the default runlevel to boot when I initialize my Linux system at system startup. When I type the "cat /etc/inittab," it states that it does not exist. Is there another way for me to be able to view this? Or do you have a video that I can look at for this? I use Ubuntu Linux 14.04. Thanks!

[@DigitalMetal]

Nessa M Yes, I believe all this has changed with systemd, which most systems have gone to, and people fight about all the time. I haven't played with the new setup yet.

[@vnsmur31]

+Kris Occhipinti Thanks! I am needing some help and was wondering if you could help! I created a directory and named it project11 inside my home directory. Now I'm being asked to copy a file named "profile" to the profile11 directory by typing cp /etc/profile ~ project11/profileCopy. My question is do I first need to make a file named "profile" and then make a copy of that file "profile" to profileCopy in order for that command "cp /etc/profile ~ project11/profileCopy" to work? I will be using this to compress and decompress. If you can assist or if you have a video that would be great! Thanks

[@robertpendergast2620]

Have you mentioned how to run a script at startup of the computer? I know && goes somewhere.

[@DigitalMetal]

Lost of ways of doing this for different scenerios. Look into "/etc/init.d/rc.local" and "/etc/rc.local" Hope that helps.

[@robertpendergast2620]

thanks

[@jeanrodrigues6249]

Brian

[@__donez__]

Links in the description?

[@jasonberg1509]

No description available

[@DigitalMetal]

Added

[@ReginaRiveroll]

Hola how can u use the command grep if you have a Number like 123,45 but you want to erase de coma

[@jasomtodokazal]

babyitsgold In order to remove characters you can use sed command. Here's the example: echo "1245,378" | sed 's/,//g' 1245378 It just shows the result this way, but if you have a file with numbers in such format and need to save its modified version to a file, it goes like this: cat numbers.txt 123,724 783,5368 123,023 sed 's/,//g' numbers.txt > nocomma.txt && cat nocomma.txt 123724 7835368 123023

[@bombomsilva8179]

every 3 months i do update on my plexmedia server and my path is ( cd /usr/local /src/filename) i wouldlike to go fast by using bash exemplo --( #!/bin/bash /usr/local/src)-- got it

[@DigitalMetal]

No I don't get it. Sorry, I don't know what you're talking about.

[@bombomsilva8179]

simple example , to me update my plexmedia server i must go into cd /usr/local/src/ what i want to create is a bash plex.sh with value of cd /usr/local/src/ , is that possible?

[@DigitalMetal]

bombomsilva Is there a reason you are putting your program in /usr/local/src/ ? It really should be in /usr/local/bin/ . Which should be in your $PATH already, if not I would add it to your $PATH. That is if I understand you correctly. Or are you just asking me if you can put "cd /usr/local/src/" in a script? If so, yes you can.

[@MoonberryJam93]

What program are you using?

[@joseiahsewwandi]

could you explain to me this

[@OddBallTrails]

I spell it like "Colour".

[@deeptravel5733]

Hi once i execute the command ./myscript.sh it says permission denied.

[@mr_karamazov246]

Try using root.

[@tyurikfefry3379]

Sorry,What is Version/Types of Linux? Someone Help >3

[@bombomsilva8179]

can you make a vedio using bash with (/usr/local/src)

[@DigitalMetal]

I'm not really sure what you are asking me. /usr/local/src is a folder on your computer, which should be empty by default. It's a place where you can put your source code for locally compiled software. Since I don't know what programs source code you put in there, I couldn't tell you how to use it as it would very from program to program. Also, I wouldn't know what you mean by using it with BASH. BASH is a shell interface/interpreter. I suppose you could put BASH code in that folder (it's your computer, you can put whatever you want in it), but since BASH code isn't compiled, you would normally put it directly in the path it's going to be run from. A common place for system wide programs you create yourself would be '/usr/local/bin'

[@lifeisworth3838]

isnt there no Tutrorial 6 of these series ? :( :( :( :(

[@DigitalMetal]

+lifeisworth Actually, there are 29 videos in this series. The easiest way to play thought them all is to use the Playlist for this series. It's the one I talk about in the video where are suggest using the annotation to watch the full playlist 14:46 You can also use this link. kzbin.info/aero/PLcUid3OP_4OXOUqYTDGjq-iEwtBf-3l2E At this point it looks like I might be doing a new Shell script series starting in January. Over all I have about 400 videos on Shell Scripts that are broken down into different playlists (earlier videos might not be the best quality. You can find all my videos and playlists on my KZbin Channel kzbin.info You can also check out my website to search thought videos: filmsbykris.com/

[@lifeisworth3838]

thnkuuuu veryyyyy muchhhhh. will definitely go thourgh all of ur videos.

[@jeanrodrigues6249]

Tim

[@Mirecsooor]

this video is great, I just don't uderstand one thing... I want to create a shell script that terminates all processes of a name given to the shell script as an argument, I have done something like this: #!/bin/bash ./app1 & PID=$! # ... kill $PID

[@DigitalMetal]

+Mirec Barborka Have you tried just using the 'killall' command? If you need to kill a number of processes with different names you can try this: pastebin.com/32z74eGr If you want to make sure the process is dead you can add the '-9' after 'killall' in the loop.

[@Mirecsooor]

+Kris Occhipinti killall command works fine, i want to try through script to understand bash shell scripting, but doesn't work... i have triied second line like this: ./killall ''$1'' but doesn't work ... :( have you got an idea ?

[@muhammadfarankhan3458]

can you also provide your video about finding a file where we only know file name but not its location.

[@DigitalMetal]

find / -iname "file.name" Hope that helps.

[@muhammadfarankhan3458]

thanks for your reply. Can you give me an example of how to use this command if i want find a file named "startWeblogic.sh"

[@DigitalMetal]

Muhammad Faran Khan Same example I gave you in the last post. If you are having trouble with this let me know what errors you're getting. find / -iname "startWeblogic.sh"

[@muhammadfarankhan3458]

ok thanks a lot buddy i got it right and executed successfully ....

[@muhammadfarankhan3458]

can you help me out in how to use "find" command for finding files that meet the specified criteria and then remove them. And how can i make the file in which i run this "find" command execute automatically after two days periodically. Kindly reply as soon as possible

[@tingtingjoanaling2114]

how to terminated shell script comment?

[@vickygarg3967]

Sir I need help to make a script for cloud mining for crypto currency,I sure u also will something from me

[@jeanrodrigues6249]

bin