Linux Crash Course - The sed Command

In this episode of Linux Crash Course, we explore the sed command. sed, aka the "stream editor" is an underused command, and that's a shame because it's extremely useful for manipulating text. In this video, I'll show you the basics of the sed command.
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#CLI#Linux #sed

[@fleborne]

I believe the 's' before the search pattern actually stands for "substitute", not "string".

[@andromida81]

Yes you are correct

[@PS_Tube]

sed is called stream editor, which is what Jay said.

[@alexo4600]

it's important to note that '-i' is a GNU only option - so it won't work on BSD or MacOS etc.

[@martinschulz1778]

Just run into this, had to switch to gnu sed on my mac

[@greendog105]

oh that explains it all thnks

[@MakeItWork256]

Great tutorial. Unlike many other KZbinr's you don't overcomplicate things. Linux at it's core is made out of a ton of simple idea's that become complicated when they all work together.

[@simfoo]

Your channel is one of those rare gems on KZbin

[@mason8714]

love seeing new videos like this for new people to linux. Jay's content is fantastic

[@crazyivan315]

Finally, a way to easily remove pineapple from pizza topping lists.

[@manny8717]

Couldn’t agree more. Pineapple as a topping? HECK NO!!

[@yewenyi]

Pineapple are good, so is feta. It should change it to both.

[@k.chriscaldwell4141]

Amen!

[@TradersTradingEdge]

I love these short session. Very codensed helpful stuff. Thanks Jay!

[@shabadabadoo4326]

Doing linux webserver support for well over a decade, sed became a go-to tool for flipping switches in config files. That said, I know its a lot more powerful than what I ever did with it.

[@BilalKhan-rm8qk]

This is my first video, that i watched on your channel. You have explained it very nice and clear.

[@larrywilliams8010]

sed 's/\/etc//' paths.txt Yeah, the command can get rather ugly when lots of escaped characters are needed, but it works and it's second nature for me since I often search for spaces and other characters that must be escaped anyway. Still, I appreciate that there is such an option in case someone wants to learn/use a different delimiter. Thanks for the video

[@anthonychaple3031]

Not all heroes wear cape. Great videos. Go buy this man's book too

[@villico3]

you explain stuff very well and simple that makes it easy to grasp! thank you for sharing!

[@TR1ckY_TV]

Finally!!! 🔥 🔥 🔥 Thank you Sir for put the effort in making these amazing videos

[@guypartush2976]

Hi Jay, LOVE your videos! Thank you so much for sharing your knowledge. please consider adding a video on the "w" and "who" commands. I realize it looks kind of obvious, but I am a total beginner in linux and your explanations of commands are the best. Looking forward to keep on learning.

[@LearnLinuxTV]

I completely agree that would be a great fit for my series. I will add it to my list.

[@rcdenis1]

I asked a college professor what sed was and I could not get a straight answer from him. Thanks Jay, now I understand. Thank you for posting.

[@brandonhunter3036]

Thanks man that's what I needed to know. Glad the video was short and to the point.

[@MaximumRD]

He sed, She sed......................I'll see myself out......

[@billquain2369]

I didn't know that you could change the delimiter to a different character. this would have come in handy last year when I took a Unix/Linux course at college

[@chromerims]

Incredible information that sed delimiter can be something other than / I too had no idea. I look fwd to using other delimiters with sed.

[@souleymanebarry9231]

Instead of changing the delimiter, you can use the backslash(\) before to escape the slash (/) just like this : sed 's/\/etc//'

[@devilmaycry0204]

Simple and straight forward, thanks man

[@mnmleung]

Thank you for very clear presentation and explanation.

[@ccroy2001]

The word sed means thirst in Spanish. So have some Pineapple juice. Thanks I've set a goal to get better at the terminal so this helps.

[@nobilkwt7222]

I want to eat a pizza now 😂🤣😂🤣😂🤣😂🤣😂😂🤣😂🤣🤣🤣

[@xrafter]

Pineapple pizza ?

[@YannMetalhead]

Great explanation!

[@vladimirkulakov8667]

oh man... we can use any delimeter!! not only / !!! Thank you! )

[@oldpain7625]

"What are some cool cli apps?" "sed and awk"

[@riccoc.6507]

Thank you for showing syntax

[@ChristianDavis-x5z]

'...something EXTREMELY WRONG with this file.' LOL I'm with you, Jay. Pineapple on pizza--I'm OUT. Thanks for the help on delimiters.

[@linuxdoesmatter5542]

You are a genius!!!!! Than you 4 teaching me!!!

[@dalirch8496]

thanks for your effort and explanation

[@john-r-edge]

Not sure ordinary mortals can master both sed and awk.

[@Acksakal]

Thank you

[@antoineweb1]

how about the /g at the end? chatGPT tells me that if you don't add /g at the end, it will only substitute the word once per line, which may not be enough

[@antoineweb1]

for example: echo "a a" | sed s/a/b/ gives "b a" as output

[@elnurvalikhanli6783]

Amazing command and tutorial thanks

[@AM-cz7qy]

Thank you very much

[@LearnLinuxTV]

You are welcome

[@venkateshiyer5073]

thank you sir, very helpful

[@danperrault]

That was very helpful. thanks

[@guilherme5094]

Thanks Jay.

[@Blubberland]

3:10 instant like

[@BlindRambler]

Oh no, no, no. I must change every topping to pineapple. This is not allowed to stand. Thanks for showing me how to use sed to do that. You are very kind, but very wrong.

[@adammureiko7508]

And what, may I ask, is wrong with Pineapple?

[@janekmachnicki2593]

thanks mate for suspenseful tutorial

[@noeelreeds]

now i can proceed w automations

[@surajbhattathiri]

Thanks

[@tolstoievski4926]

what is the difference between -i and -i.bak ?

[@محمّد.09]

that s is for substitute right.

[@narayangurung7090]

Fantastic

[@ThodoreErnest-m6b]

Noelia Harbor

[@Ranblv]

I think the s stands for substitute not string

[@muralikrishna9748]

Wondering what would be the script if I want to replace only the last occurance in the last line of the word Pineapple with Olives in your example file ?

[@strifef7]

rude Jay! Pineapple is the GOAT on pizza!!

[@TomikoLinne]

9450 Aliza Orchard

[@nobilkwt7222]

what about a video about chroot

[@sivaprasadk4756]

Nice...very useful

[@TaunyaRoseberry-t6r]

Shirley Spring

[@chessmaster856]

How do you undo if find and replace was wrong? Notepad++ can find and replace across all files from ui. You don't need Unix command for that. Also it can undo it. Can you undo from unix????

[@CarrollGeorgia]

121 Dejah Mountains

[@spondoolie6450]

woah ... I've been using the sed command this whole time in vim?

[@derekfrost8991]

The option i followed by a suffix creates a backup = -i.bak this is important as -i can be dangerous.. :)

[@AllenWhatley-v2w]

Kyla Islands

[@stevenoderayi5776]

‘sed’ is short for ‘stream editor’, for those who’re wondering what the command means.

[@markchristophergemzon1052]

it was said in the video. thanks anyway.

[@shajibdey6451]

et(44)1,tet(37)1,oqxB1,VanX-D4,VanX-D4,tet(O)2,aadA51,VanR-G1, here how can I remove everything that comes only after the bracket () by using sed??

[@JohnsonFitch]

505 Sunny Branch

[@JosephMartinez-r1m]

Kasandra Inlet

[@LavoneMaiocco-l4g]

Efren Route

[@ahmadfrahmand]

Sir, have a question for you hope you are doing well. i have 1000 of these files 3B43.20000101.7A.HDF.nc4 i would like to remove . (dots) from the file names, and it should look lie 3B43200001017AHDF.nc4 . i watched your tutorial about sed but it is not working here for this as it is not a txt. hope you got my question

[@sohaibesohaib2914]

the video starts at 1:20

[@spacelem]

Sitting here watching the video while eating a ham and pineapple pizza...

[@debeeriz]

i was playing around with it to change one letter in a word to another letter and it worked but only in the first word in each line with the letter. Other occasions of the letter remain unchanged

[@debeeriz]

found out how add a g for global quidsup explains it in more detail

[@khomo12]

Nice!

[@ivanm9186]

CHICKEN PINEAPPLE PIZZA IS THE BEST and PERIOD!

[@AnzanHoshinRoshi]

Thank you, Jay.

[@stefanchoh4991]

I need to use sed to replace ip adress is to nginx config files I wrote a short bash shell script that has the new IP address and the old IP address as variables, I used sed to pass the variables but it give an error Syntax used Is sed “s|$VAR1|$VAR2|” file.txt but this works in the command line just not in the shell script

[@MarkClark-m8g]

Paolo Summit

[@vikasmahour6059]

Thanks for your vedios. I am stuck in a problem . My XMl FIle contains data like : 1234 2345 8787987 89898 80098 I want to arrange my xml file such that the tags and should be in a single line without space. 1234 2345 8787987 89898 80098 Tried many sed commands but no luck.Please help me to resolve it .

[@ValentineSeegar-k1x]

Metz Street

[@StephanieParker-w4k]

Kub Lodge

[@PhilipBoullion-o5k]

Zechariah Trail

[@EduardoReyesDPM]

Ty

[@chessmaster856]

Is Unix dinosaur or not?

[@zeeeeeman]

video starts at 2:00

[@ChristianHarvey-u1c]

Paucek Forges

[@HouseAntony-c1h]

Ratke Meadow

[@srsr6099]

Awesome again. Now I have awk sed & $bash ?

[@xrafter]

ّ

[@xrafter]

bash: Now: command not found

[@srsr6099]

sudo apt-get update, could help

[@paulojr1384]

i felt that a can cheat the machine... stupid machine... lol

[@marcravey4621]

You have to understand. Unless you can make ordinary devices work, like Bluetooth.. You will always be a third choice. I need to use Bluetooth, and it only stays connected for on average 15 mins. At least printers use the web browser printer settings, else that would be another thing , that doesn't work on any Distro I have used just about every Distro out there, none have lasted for over a year except Linux Mint

[@hezekiahwatkins]

I regret joining cyber security. I understand none of this shit.

[@icyjiub2228]

anti pineapple people will always be weak

[@RayleignRonald]

Moore Jeffrey Perez Barbara Hernandez Anthony

[@Thr0nSK]

Good video, liked it very much but sorry man, I had to click the dislike button... pineapple absolutely BELONGS on pizza!

[@alexhu98]

You just lost all credibility for disliking pineapple🤪

[@poojithapriya2370]

First

[@willforrhall]

needs to be -i.bak on mac

[@bobwong8268]

👍👍👍👍👍 Thanks! This is a great first-step into the wonderful world of /sed/.

[@dillon1012]

You sed it

[@Ollital]

I tried to understand sed for years. I guess now I've got it. Thank you

[@itbook182]

Good morning, Jay. Thank you very much for the detailed guides ! I have an old Toshiba Portege 14" Laptop with Kali 10.04 still installed there. Recently, I wanted to use it for a monitoring device and reinstall it but it is giving the "no pae"- error (common for the very old hardware). It doesn't boot from USB, only from CD/DVD. Do you think, I can still use it to install a Linux OS on it (I wouldn't mind being only CLI - I need it just to be able to install software to monitor my network), and which one you would propose if yes ? Thank you in advance. Asen

[@swarooprajpurohit110]

You could use a distro which doesn't require pae or install an older version of kali and then upgrade it

[@thalcave8220]

Sed is command that I couldn't understand when I was beginner. I learned it but did not understand. After few months of writing sed s/... I noticed that I understand what I was writing.

[@MurangShaBu_MahalNaBiGas]

Thank you Jay Linux is really vast, I just had my certification and I never heard of sed command. I'm glad your putting content for us.

[@dorotamartyniuq5553]

"maybe I'm just hungry, I have no idea why I decided to use pizza toppings as the basis for today's video, but you know what, I did what I did and here it is" it made my day

[@brentrambo2571]

You sed yes, I sed no You sed stop and I sed go go go, oh no You sed goodbye and I sed hello Hello hello I don't know why you sed goodbye, I sed hello Hello hello I don't know why you sed goodbye, I sed hello