Layin' down Pipes like a Unix Chad

[@raydeen2k]

% man: why did you get a divorce? man:: Too many arguments.

[@aliencreation8744]

lmao

[@sethsrc792]

I tried this and it open a POSIX Programer's Manual. lol

[@aprameynaganur7734]

@@sethsrc792 its actually the manpage for get

[@sethsrc792]

@@aprameynaganur7734 ?

[@aprameynaganur7734]

@@sethsrc792 when you write man why did you get a divorce it shows you the manpage for get

[@annoyingmime3081]

I hope you make more of these basics videos.

[@yacek1234]

10:37 "The biggest recomendation I can give you is just git gud"

[@gydo1942]

git: 'gud' is not a git command. See 'git --help'. The most similar command is gui

[@bsatyam]

@@gydo1942 git: 'gud' is not a git command. See 'git --help'. The most similar command is add

[@uuu12343]

I’m tempted to alias something like that alias git-gud=“git”

[@aprameynaganur7734]

@@uuu12343 lol

[@74erPinguin]

Never been so close to subscribing to this channel.

[@drygordspellweaver8761]

Lol

[@一郎-e1i]

Btw, Friedrich Nietzsche also used Zathura for his pdfs: thus spake zathura

[@dill__pickles]

Wow this a very Luke Smith meme

[@stumbling]

@@Fooftilly bash: zarathustra: command not found

[@一郎-e1i]

the Windows Virgin vs. the Unix Chad

[@irfangazi1473]

* Windows Incel

[@userPrehistoricman]

Wincel

[@paultaylor2054]

Windows just got a terminal lol

[@MrEdrftgyuji]

The virgin Unix vs the chad TempleOS

[@一郎-e1i]

@@MrEdrftgyuji RIP Terry

[@stumbling]

This video increased my testosterone by 53%!

[@pwnbag]

Up next *What is the worst Linux distro?* Brian Lunduke

[@thingyee1118]

Reeee

[@herrpez]

I mean... he's not a Linux distro, but he is fucking terrible.

[@hanss3147]

I think he's talking about Lunduke's video on where he answers what the he thinks the worst linux distro is

[@sbrazenor2]

Everyone knows it's Gentoo, when referencing Lunduke's idea of the worst distro.

[@alexanderwhite2745]

@@sbrazenor2 Yah, fuck Gentoo. I use Arch btw

[@humanbeing_]

Dude.... THANK YOU. I wish you continued to create more of these videos more recently vs so many of the rant/vlog videos. Now, don't get me wrong: you do provide valuable info in (most... if not all) of those videos, however you're so great at teaching things like this so succinctly, in easy to understand/follow videos, I simply would appreciate more of them. Regardless, I appreciate all of the content you create and post for the community & any general viewer. But these happen to fall into the "you don't know what you don't know" catagory. Meaning this info is out there for anyone to learn, but the reason we find out about it or understand it better is because you made a video about it and we come across them coincidentally, or happen to be subscribed. Anyway, cheers.

[@stephenreaves3205]

Luke exiting vim instead of :set filetype=sh??? Has the bloat gotten to him???

[@LukeSmithxyz]

typing letters is bloat

[@brooksman10]

:e

[@axelforsman1642]

Even better: `:filetype detect`

[@realEchoz]

I'm pretty sure the fastest way is: :w|:e

[@wesleyrm]

@@realEchoz Great!

[@julioramirez5497]

Manual of the manual 🤔

[@HiPhish]

Here is a better Awk script: awk '{print substr($2,2,length($2)-2) " " $1}' This script will print the section number as well as the name of the manual. Luke's script only prints the name, and if a manual resides in multiple sections only the first one will be chosen. If anyone has a simpler way of saying "everything from $2 except the first and last character" let me know.

[@realEchoz]

sed 's/^\([^ ].*\) (\(.\)).*/\2 \1/'

[@A_Box]

Thanks! It was kind of obscure to understand pipes the first time around form the text description only. This demonstration would have helped a lot then and even now it is just so clear.

[@LPFan33]

my pipes were not working properly, getting stuck most of the time, but then I was really happy you made a video on plumbing as well

[@gavinvales8928]

uh oh someones planning on moving to dwm...

[@KingZero69]

luke pipes em the right way...

[@tahak7411]

Absolute chad.

[@ertwro]

I was like "oh, he's gonna explain fifo files and '' " but no. I was wrong oh so wrong.

[@rickyoswald]

It's not POSIX compliant because line 2 is not terminated by a newline character.

[@vmisev]

3.206 :D ⠀

[@realEchoz]

Vim automatically terminates the last line with a newline char.

[@rickyoswald]

@@realEchoz no it does not. it might be an option but that is not the typical behavior.

[@realEchoz]

​@@rickyoswald Yes it does. You have to set binary and noeol for it to not do this. Try it yourself, create a single line in a text file, save it and cat it and you'll see that it will end in a line break, causing your prompt to appear on the next line, not on the same line as the contents of the file.

[@rickyoswald]

@@realEchoz >You have to set Oh so what I said then.

[@deeznutz2322]

Thank you my favorite 30 y/o boomer for teaching me the ways of the unix chad, I am forever grateful.

[@thecashewtrader3328]

Yay

[@mortkebab2849]

Typing sounds like a stampeding herd of horses.

[@4.0.4]

"man up" could be used like RTFM.

[@airilsra]

For my Ubuntu and Linux Mint brethren out there, to have -Tpdf option you need to have groff installed.

[@heisenberg9017]

Thanks bro, u just saved me from an hour of figuring out what went wrong.

[@Alekov_]

YT comment section is bloat.

[@AlderDragon]

I really like the syntax highlighting in your terminal. Is that done through st config?

[@Carlitos1993]

‘Git Gud’ at laying pipe.

[@lgroschiensalle]

My mom once shoulder surfed me while I was chatting on IRC (back in the day when it was still cool :P) and asked me what I meant when asking some guy in a support channel, "How fat is your pipe?". I told her, "Woman, return to the kitchen if you know what's good for you..." Later that day, the ISP called, they were tryin' to sell me some crap-ware "security package" and I was arguing with them about something I can't remember, and told the tech, "Buddy, if you send me another one of those floppy disk with your garbage software on it, I'm gonna: dd if=/dev/zero of=/dev/fd0 bs=4k till the cows come home! Just feed us the pipe and stay out of the security industry". Funny day :P

[@ba8994]

such a chad

[@patrickprucha5522]

very useful! I save my manpages because of portability. or have the man's to review anywhere. Good Job!! Many thanks!!!

[@Forrest-T]

@Luke Great piping! However, one small problem with this example is that there might be more than one man entry in different sections for a given string. For example, "read" is (1) a shell utility that gets input, (2) a Linux system call, (3) a C library function. Each of these has a separate entry, and your script would always select the first one. We can fix it with even MORE piping! man -k . | dmenu -l 30 | sed 's/[()]//g' | awk '{print $2 " " $1}' | xargs -r man -Tpdf | zathura -

[@realEchoz]

Even easier way, using only awk instead of sed, awk and xargs.: man -k . | dmenu -l 30 | awk 'system("man -Tps " substr($2,2,1) " " $1)' | zathura -

[@uuu12343]

What a friggin chad bruh

[@ChipAltmanxD]

Thanks Luke! 🤗

[@joemulhern]

Dude you are amazing, I love these videos so much. How did you start to learn all of this stuff? Is there a certain channel or blog?

[@IrizarryBrandon]

Great, especially, for when you have to print something! Nice video.

[@thefekete]

Funny I was messing around with doing this with groffer (1) the other day.. But I like your solution a lot better! I made a couple changes though: man -k . | dmenu -l 30 | awk '{gsub("[()]", "", $2); print $2, $1}' | ( read c || exit; man -Tpdf $c | zathura - ) a) If you don't want to have zathura open up when the script starts, but only when a item is chosen, you can pipe the choice to a subshell an use read instead of xargs. b) This will always open the first match for a man page found in any section. Thus, it will open groff (1) even if the user selects groff (7). A simple addition to the awk command fixes this by including the section number in the man command. c) If if there's no choice, read returns an error code and bails out before opening zathura.

[@yash1152]

2:28 zathura can read from stdin - woww!!!

[@kruxdt6307]

based

[@ashishpatel350]

A command named "man"... Feminist outrage intensifies. REEEEEEE 🐸 👌🏽

[@al20ov87]

I tried doing it your way with zathura but since I run Fedora, the packages are not the same and zathura was missing some obscure plugin package. There is a way to do it with evince though: man -Tpdf ls > temp.pdf ; evince temp.pdf ; rm temp.pdf So the whole command ends up being: apropos . | dmenu -l 30 | grep -Eom1 '^[^ ]+' | xargs -r man -Tpdf > temp.pdf ; evince temp.pdf ; rm temp.pdf

[@vmisev]

This is very good pipes example, but man to pdf script has some problems. Take a 'printf' for example - there is printf(1) and printf(3) /man 1 printf & man 3 printf/ man -k . | grep printf //not very useful in this case. wanna pipes? drill, baby, drill ;>

[@danthemango]

man oh man is man a good program

[@RonnieNissan]

wifish list | awk 'FNR>2 {print $1}' | rofi -dmenu | xargs wifish connect Wrote my first script ever, yayyyy, Thank you luke smith. so my script takes the output of wifish list (wifish is a frontend to wpa_supplicant) pips it into awk which reads from line 3 and up and only the first column and pips that into rofi with dmenu functinality (you could just use dmenu though) then it pips it into xargs with the flag -r so it won't execute anything if you hit ESCAPE, but if you hit one of the APs it will connect to it. I am sooo happy hehehe

[@godofhack19]

I actually made this script and use it pretty often, though I made some changes. I noticed that you can only open the default section of any manpage regardless of which one you choose, so I changed it to: man -Tpdf "$(man -k . | dmenu -l 30 | awk '{print ($1, $2)}' | sed 's/ //')" | zathura - that way it pipes "man(1)" or "man(7)", instead of just 'man' for both. Also since I use this on a very old computer, running 'man -k .' takes some time which is annoying, so I created a file 'manlist' that stores the result of that command and update it through my .bash_profile. All in all I ended up with: man -Tpdf "(dmenu -l 30 < ~/.scripts/manlist | awk '{print ($1,$2)}' | sed 's/ //')" | zathura -

[@laniusdev]

This video inspired me to make make life so much easier. Honestly anyone looking into scripting on Linux, should watch it. I made a more or less one-liner VPN switcher with dmenu, which made my life so much easier.

[@DarkusObscurius]

That's why terminal is more usefull than GUI.

[@fitzpatrickmathemati]

Would be cool to add a flag to mainsplain to let the user "prechoose" the man page. Maybe "mainsplain -s cd" automatically opens the man page for cd in a pdf.

[@___xyz___]

xargs is glorious

[@slackerengi2401]

Liked just for Man -k . Thanks boomer Luke

[@yomajo]

Sweet fucking lord. One question. When PDF is displayed, is there a file somewhere, or is it read from memory?

[@Arunscape]

the virgin Luke tutorial vs the chad ` cat /dev/urandom | base64 | lolcat `

[@patrickprucha5522]

Functions are good. I had one but decided to go with scripts. If you do it right you can call a specific script multiple times

[@rodrigosouto9502]

Great tricks, thanks!

[@rnrteg]

New to your channel, love this video and the others I've seen. Quick question, I'm getting an error using man -Tpdf saying that groff thinks pdf is an invalid device. Is there some additional program I need to get this piece working?

[@JrIcify]

There are arguments against the idea of pipes but I like them.

[@jimbarino2]

What's really cool (for Windows losers) is powershell pipes, which pass whole objects. Next level stuff...

[@shady4tv]

6:50 Why use awk when you can just use: cut -d ' ' -f1 output spacing is predictable so cut might be a bit faster than invoking awk for something so simple. (awk is bloat) unix.stackexchange.com/questions/132313/what-are-the-exact-differences-between-awk-and-cut-with-grep

[@AaronBonBarron]

I really like your squishy brain

[@jesswoode2627]

wow thats amazing

[@kainbre]

How about script that allerts you when you reach crittical battery level? Btw thanks for the video and Larbs!

[@32th]

I attempted that one and what I came up with is a udev event that sends a signal to a C program which sends a notification. I did that because a command caused by a udev event runs as root but the notification has to be sent as user

[@aayushnp5430]

Very nice! I love these types of videos

[@Griimnak]

mah nigga.jpg

[@OmyTrenav]

Your videos are great. Thanks! Quick question: you mentioned there are reasons why you prefer using scripts over functions. What are those reasons? Thanks.

[@mortyk37]

He explained that xargs can read from scripts, not functions

[@lnus7832]

awk is pretty chonker tho, so `cut -f 1` is a good alternative for such a simple usecase

[@nahushgaikwad]

Awsome knowlege... Would like to see more of such things

[@ederbit]

#02:21 - you can just do 'pacman -Qqs zathura' if you didn't know about that

[@MrNpkellogg]

wayyyy outta my pay grade.

[@tejasn3835]

how do you run the command at 9:41 without any terminal open

[@PandemicGameplay]

Just want to say this video is freakin awesome

[@tracy_gao]

I just want to say this guy is pretty cool, even I still don't understand what he did.

[@amir78989]

Can I get a link to buy your keyboard Luke?

[@LukeSmithxyz]

www.pckeyboard.com/page/product/UB40PGA

[@genericgamer1319]

you mentioned that xargs creates a sub=shell is there any process that doesn't do that i wonder it's the old fork & exec

[@saturnemgs]

I wish I knew about dmenu much sooner. I used to use a zenity based bash function and index files that do what dmenu does. Now I'm gonna have to update a whole bunch of scripts. Thanks ..?

[@qiuyue4082]

Why my brain has hard time to understand xargs?

[@eyupyorulmaz3410]

-l stands for --lines

[@gmodrules123456789]

*converts man page to pdf* Wait, that's illegal

[@lthiaggo]

You could cover pipes with redirections in a future video ^^

[@chadgrant8870]

great content! keep it up!

[@jtrickett1974]

Newb here. Any way to make zathura open *after* the desired manpage has been selected?

[@Артем-щ1ш3у]

xargs which is desinged for handling multiple arguments makes script bloated because end result is a single word. For me it is reasonable to write this sequence like man -Tpdf `man -k . | dmenu -l 30 | awk '{print $1}'` | zathura -

[@emanuele6]

The point of the video was to only use one pipe (your script is not just one single pipe). Also you could argue that " awk '{print $1}' " is overkill (or as you kids say, bloat) because you can just " cut --delimiter=' ' --field=1 " (or " cut -d' ' -f1 " for short). I think it's pointless to make this sort of discussions. EDIT: Corrected typo: "delimeter" -> "delimiter"

[@nerrufam7105]

error: Error parsing command line arguments: Unknown option -

[@emanuele6]

@@nerrufam7105 Try writing the command by and: it works for me writing it by hand but not copying (the command is correct: it should work)

[@emanuele6]

found the problem: COMMAND: $ echo ' - ' | xxd 00000000: 202d efbb bf20 0a COMMAND: $ echo ' - ' | xxd 00000000: 202d 200a He probably used an unicode character instead of the standard -

[@nerrufam7105]

@@emanuele6 that is weird, thanks for the reply

[@antuacharjee9145]

Nice syntax highlighting on your shell. Have you switched to fish??

[@astralchan]

10:16 the -r flag for xargs isn't POSIX

[@nonenothingnull]

*MAN* REEEEEEEE SECIEZT

[@reverseila4363]

0) Thanks!

[@va9iff]

I'd use fzf instead of dmenu

[@kowsirahmed5668]

Wow!!

[@rev0lu7ion]

Cool stuff. This is why we use *nix.

[@JamesCaseyPhD]

echo "!!" > file.sh

[@killianogrady-walshe4213]

Using man man since pop wasn't around.

[@reverseila4363]

I have two problems: 1. When i run this script before even i choose my man page zathura is opened. 2. I put this script in a PATH folder but everytime i have to source .profile to use it in my bash terminal. Os: debian (sid)

[@merajularefinpial3639]

When I run the script and if I press escape on dmenu to select nothing, zathura still opens a blank window. Can I solve this somehow?

[@mikeazarov8238]

m a n s p l a i n i n g

[@surferbum618]

Nice

[@alurma]

Very cool. But why do we have to write "xargs -r man -Tpdf" instead of just "man -Tpdf". Like we didn't have to use xargs in the command after the first pipe

[@streetster20]

`man xargs` will explain it. But it takes in stdin and appends it to the command. So `echo ls | xargs -r man -Tpdf` = `man -Tpdf ls`. The man script can't use/read stdin for an argument.

[@serge8317]

How can I install dmenu on CentOS please? Thanks

[@coon-si3ce]

I was wondering about that pacman command. Checked what it would do for me, but didn't have it. So I did an apt-get install pacman and...... I got a pacman game.

[@chidaruma_]

Cool video, but what does Puffy have to do with this? Lol

[@roi12555]

how does xargs knows where to place the so as an argument?

[@LukeSmithxyz]

By default, it will put it at the end of the "string", but you can specify where it goes with -I. See the follow-up video I just put up now.

[@jonahsimmons3645]

HELP: How can i remove the "tmp" file from this? objective: get a list of all the TODO comments in my code, be able to select one and edit that file and line in my code current command: grep -rn //TODO: src | dmenu -l 20 > tmp; nvim $(cut -d : -f 1 tmp) +$(cut -d : -f 2 tmp) I've read through all of the xargs and cut man pages and idk what to do (although it's probably a bash thing rather than a specific command thing)

[@thierrybo6304]

Don't get the point to output to PDF if it is just for reading it. Much simpler to just display the legacy man output. Usually if i want to keep a PDF, this is because I will annotate it. For that I use `yelp man:manpage` and print to PDF from there.

[@ShamanSenra]

i just use fzf

[@KaelinatorPVP]

Why does he bother fiddling with xargs? Couldn't he just have said: ... | awk 'print man -Tpdf $1' | zathura -

[@realEchoz]

That's not valid AWK, but you could use this to achieve the same thing: ... | awk 'system("man -Tps " $1)' | zathura -