Linux Crash Course - The grep Command

The "Linux Crash Course" series (formerly known as the "Linux Essentials" series) tackles important concepts around Linux, one video at a time. In this video, Jay goes over the basics of the grep command, along with some useful examples.

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*⏰ TIME CODES*
00:00 - Intro
00:38 - Check out Linode and get your very own Linux server!
01:58 - What is "grep"?
03:12 - Piping the cat command into grep
03:58 - How to omit a search string
04:49 - Running grep by itself
05:32 - Using grep against a sample file
07:33 - Showing line numbers with results
08:00 - Additional options with the grep command
10:06 - Using grep against multiple files
10:55 - Recursive search with grep

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#Linux #LinuxTutorial #grep

[TradersTradingEdge]

Love these series Jay, thanks very much.
What I really appreciate in your videos is, that you explain the meaning/naming of options in the commands. For example "-r" for "recursive", or "-i" for "insensitive". This helps very much to memorize these options, because they are endless when it comes to shell commands ;-) Keep up your great work Jay, thanks.

[Ladida]

I´d love to see a episode on advanced grep use-cases. I´m often supprised how powerful and useful this little application is.

[theunclemez]

Hello Jay
only to say thank you so much for this video
i'll watch it like a good dozen of times
you actually realized an old dream that even books wasn't able to make possible
Stay blessed and I stay tuned

[BrianKismetDesign]

Thanks Jay. I never looked at the man page because I tend to use find, but you explained it very clearly. Grep demystified! I'll be using it a lot more now.

[fehwejq]

Thank you for this! I didn't need to take notes because your way of teaching made it so easy to learn and remember for future application.

[ddEEE]

Jay, next week do "How to do your taxes with the 'find' command!" 😁 'find' has soooo many options that it probably requires 3-4 videos...

[chrisa.]

Excellent tutorial! I've only used `grep` by looking up examples, but now I'll try and use it from scratch like your examples. This video was well formatted and informative, thank you.

[rileyf]

great video and great content. production was there and I am excited to keep using your short and specific videos to help me further my understanding of terminal thank you for doing this.

[TheCodeAlwaysWins]

Needed a refresher and this was a great/concise overview

[bahathir_]

Corrections for "-c" option.


"-c, --count print only a count of selected lines per FILE.."


So if there are 2 or more occurances in a line, it count as 1.

Thank you.

[volkervitt]

After using grep the non-optimal way I finally learned how to do better. Thanks for the video.

[Bubbasaure]

Thank you so much this really helped with completing my assignment

[jmlc]

I also use -l to list only the filenames which contain the search term. and also zgrep for when the files are compressed. Great video!

[onuronel]

THAT IS A INCREDIBLE TEACHING WORK, THANK YOU VERY MUCH.

[duamalik]

your videos are super helpful, I appreciate your work.

[mikegropp]

Often the reason people use the format "cat file.txt | grep term" is because they want to search for multiple terms separately. I can can tap the up arrow to get the previous command then easily change "term" since it's at the end of the command where the cursor will be. For a command in a bash file, I would use "grep term file.txt" to keep it shorter.

[nkmicros]

I use "grep" for a couple of years now and did not know I could use it individually, without pipping it as with "cat", "less" or so...
This command is more powerful than I was thinking =)

[georgehope]

Super cool, very useful, thank you very much.

[Mythologos]

Grep is what got me into Unix, it is hands-down my #1 favorite program ever written, I use it for everything! If I hadn't found grep I'd probably still be using Linux like Windows, it opened up a whole world for me.

[oskar]

Good one Jay. Thanks for the detailed examples. The grep -ri is very powerfull and I'll be using it many times...