fd, dup()/dup2() system call tutorial

In this video, we illusrate the basics of dup() and dup2() and how you can use these system calls to modify the file descriptors of your system. Modifying these file descriptors will allow us to change the direction of input and output of our program (e.g: instead of having our program read stdin from the terminal, we can have our program read stdin from our file, instead).

[gabrielt]

You're describing this better than the prof. Thank you!

[mohammedmokhtar]

When you don't get it from the man page for 30 minutes and get it from a 4-minute video made in 2014...

[taras]

You saved me from failing system programming. God bless you both

[SoufianeSabiri]

From your videos I learned faster, I can't believe myself, you guys make it look easy !

[helene]

From 42Paris, Thank you for this video !! I obviously subscribe and hope you will do more videos (ok, 6 years after this one :( ) . I will talk about your videos in 42! It is so easier to understand by drawings than by code . MERCI

[SWAGCOWVIDEO]

I got an assignment involving pipes - and I had no idea what a file descriptor or the dup() system call was. I would've been screwed without this tutorial. Thank you so much!

[TheEmbeddedLinuxDude]

Was having a hard time understanding dup/dup2 until I saw this video. Thanks guys!

[svetameanssun]

Thank you! It is a lot more information that I could find in other videos!❤

[tal]

Best video of dupp in youtube ! congrats guys !

[jamesdouitsis]

Awesome video guys!! Made a very strange concept very easy to grasp!!

[tessacarstairs]

9 months later I'm back at this video again. Still begging you two to become profs <3

[newtao]

such more i learn, more my loving for programming increases

[alexmathai]

An excellent explanation, thank you very much.

[CanardWC]

Really nice and clear video, thank you guys :)

[wyozynd]

Thank you so much im gonna go through your whole channel rn maybe ill pass the course

[gbr]

Your videos are quite good. Why don't you make more? Do you still code?

[MrVerao]

Very nice helpful video, thanks a lot guys.

[ManGo]

This was a lot of good information. But I'd like it to better explain the part where we open a file into the fd[0] slot. and how that's done.

[cele_stin]

Super useful, thank you for the upload :)

[chloeduan]

thank you so much! this was really helpful.