Who up grepping they file rn

now THIS is the kind of tutorial video i'd like to see more often. Straight to the point, no boilerplate, explain a concept and show an example. Very educational and useful

No useless talks, great content with examples, good video and audio quality. Nice job! You earned a sub Keep it up!

I like how you focus on a single command and give a very helpful overview. So many other "10 great linux commands" videos don't give enough detail for me to retain them. This is much better.

-C is for context, a very important word.

You absolute gigachad. This was amazing, thank you. 🙏

Honesty I have known grep for like a decade and use it literally daily for half of that decade but watching this made me realise what all I was missing on. Thanks for the video.

Excellent content. I hope you make a ton of videos this year. Thanks for sharing your knowledge!

Really loved the video, very comprehensive yet quite short. Please keep posting more videos. Two useful flags that I would've love to see: -R and -n.

Just found this channel, great stuff. I really like the way you go about explaining stuff. Looking forward to looking through more of your content - keep going!

Came for the grep, stayed for the regex. Great content. One thing I would add is, sometimes I grep twice. For example, I want to find all the 404 logs, but then I also want to filter out logs with specific message, say "user not found". Then I can: cat server.log | grep 404 | grep 'user not found'

Please keep making those Videos. Those are so nicely done :) I am thankful!

I subbed when he said "the alligators", hilarious! Loving the helpful video, it's great how you break everything down so well step by step.

You have the best video ever about grep on KZfaq

Great video, thanks!

such a great concise video, thx!

I'm pressured for time, so I can't "Like" all of the positive comments - but please note that I do agree with each and every one...VERY userful videos...Yea for us, Thank you to you.

straight to the point, also i really like the video & sound quality. you earned a subscriber brah

Awesome videos for people learning man, keep it up!

Amazing!

Trust me, you will grow like anything just keep posting linux videos! totally loving it!

Awesome!

Very important note! The grep command is very battle tested. A regex that is safe with grep is not necessarily safe to use on requested resources. Always use extra caution with unknown inputs. Use extra extra caution if that unknown input can build a regular expression!

Use 'grep -P' for Perl regexes. Then you're able to use special shortcuts like \d for a digit or \s for a whitespace, etc.

Useful! Thanks

@4:40 -e tells grep to search for the regular expression '-a'. It does not negate special characters. For example if you searched for -e 'a$' it would return lines ending with the letter a

Great video, will definitely help me prepare for my exam :)

RE: Logging Use structured logging and preferrably JSON - you can now use jq and do WAY more powerful stuff in an almost-as-complex language as regex.

this is a great short and to the point video.

Need a video on jq , I'm a noob at it but can appreciate how efficient it can be to find and manipulate json

It is helpful to get a grip on grep.

Nice tutorial

Pretty sure -C is context. I use vim as my pager for man pages, but this should apply regardless. In man, I would use /^[ ]*-a, to find the section of the man page relating to the a flag. It reads, “show me lines beginning with some number of spaces immediately followed by -a”.

Thank you. If you have time a video on the $ sed command would be great, leading to string parsing.

Great video! I consider myself a bit of a seasoned sysadmin but I still managed to learn '-w' and '-e' for the first time! I normally use 'fgrep " term " ' (or 'grep -F') to search literal strings. As a bit of feedback, I would avoid teaching 'cat | grep' as an example because it is generally considered to be poor practice as it achieves the same result while expending more CPU resources. But if you must use the example, then at the very least mention that it is less than an ideal use 'cat'. While 'cat' itself is not a huge deal resource-wise, myself, a long time ago have been guilty of using 'cat | grep' not knowing any better but hope to teach others better practices and better habits. I would instead use different commands like 'ifconfig' or 'ps' to demonstrate the use of piping into 'grep'.

I guess that kind of videos can be helpful for beginner. Not too much detail and options digging, still a decent amount of helpful information. Well done! 👍☺

grep is probably one of the most powerful pieces of software ever created next to git

thx man

This is what youtube videos should be like!

One useful flag I didn't see: the -o flag. I use it a lot when grepping by some regex pattern and I only need the match output

Good channel. Keep going 😊

nothing that I didn't know already but great video anyways

You should be using your pager to find things in manual pages. Usually `less` is used as man pager and literally all you have to do is press `/`

super underrated

take the sub bro , u deserve it , will recommend u a lot

damn i did not know some of the flags. nice vid man

I've always thought "-C n" stands for context. As in, the number of lines of context around the match. At least, that's how I remember it.

Wow; just found this and loved it! Thanks Navek, you know have a new Sub... ME :)

I know this wasn't the point of your video, but when you're using `man` pages, usually your pager can perform searches within by pressing `/` while you're looking at the man page. For example `/` followed by `-D` and then pressing Enter will find the `-D` flag and then press `n` or `N` to search forwards and backwards. (You can also press `?` instead of `/` to start searching backwards. If you spend a lot of time in man pages, definitely worth figuring out the keyboard shortcuts :) Loved the video btw, very to the point, no unnecessary preamble, just pure usefulness.

If you're using Gnu grep at least make use of the -P switch to get access to the Pearl regex. Also you could have mentioned that not all distros have --color added to the grep alias. Your IP regex isn't fully accurate either, since it also would match illegal addresses. Everything else was quite nice though. For coding purposes -Rn is useful (recursive and show line number). If you want to compare files I found it helpful to add the -x switch. I usually compared kernel .configs with grep -xivf old.config new.config, though I found that still needs too much scrolling, so I hope you have a gnu awk video ready, and you better not pipe grep into awk!

6:00 C for "circa"!

Great video overall. But I just want to point out that last part about filtering out IPs is wrong. The first 3 octets can all be 1-3 digits. That filter will miss a lot of possible IPs.

the nice thumbnail drag me here

I suggest you watch next the fantastic "Where GREP came from" by Computerphile...

what console font is that?

For `-C` the mnemonic is "context" I believe

It may be worth nothing the globbing is performed by the shell, not grep. It is equivalent to just listing all the files that match the glob (because that's literally what the shell does).

5:25 no, I don't believe the -- could relate to bash, that would have to be a feature of GREP itself. Because all arguments are passed the same way (argv). It would have to be GREP seeing the -- and handling it to change the behavior of future arguments.

less, greater than are called angle brackets in this context 9:27

grep -ril

ripgrep > grep

ripgrep®

Why use Grep? Reply with what you use it for!

back to school kids... (btw just pumping your engagement, disregard the word salad coming out of my brai... "there is no spoon Neo"... keyboard)

Like who searched for this video using grep

Clear screen is Ctrl-L .

video bookmarked

`grep EXP FILE` > `cat FILE | grep EXP`

Been grepping since 1987 or so...

Great, but please speak more slowly.

0:50 what a cat abuse.

We've been trying to get people stop doing cat |grep for years. Why on earth would you do that? You add another process to your pipeline for absolutely no other reason than adding unneeded complexity. You should probably think before you try to teach.

I find myself needing to find a word in a directory and wanting to know the line number. -r for recursive, -n for line number grep -r -n searchterm dir/

I find ripgrep to be faster and more useful, especially combined with fzf.

Unlocking grep: Install ripgrep 😎

I use ripgrep btw

Love your content and your presentation. Got a sub from this guy. | grep "earned sub"

Give it up for grep in 2024: ripgrep. It’s faster, it auto ignores files you probably don’t want to search for and it’s mostly a dropin replacement for grep.