38.2 - The dup2 System Call - A C tutorial for redirecting stdin and stdout using system calls.

[@diegod.8518]

By far the best explanation on this topic I have found on the web. The way you visualize, reiterate, and add different examples while switching from code to illustrations is superb.

[@alvinlu1512]

The best explanation I found online! Excellent!

[@moisesdevs]

great video! The world needs more teachers like you! Subscribed

[@pochopsp]

Great video and explaination. Now I get it all. Thx a lot

[@techlover714]

Greatest work on youtube please make videos on multithreading. Your videos are magic.

[@omartrkzi]

Finally some real English ...... God ! My ears ...

[@splodys]

This is great content! keep up the great work, helped me immenselly!

[@marcosmecatronikify]

great explanation, thank you very much for sharing your knowledge!

[@YourName0729]

Thank you! Very clear and detailed!

[@miquelmunoz611]

you saved my semester

[@narvik7587]

Thanks for your video. I am really appreciated 😭

[@naibiyilidaer5580]

Thank you so much!

[@malakggh]

Thank you so much, it's really amazing video. What application do you use for drawing on the screen ?

[@oussamakaddami4543]

Excellent!

[@p_molnar]

superb video! What program and device are you using to annotate the screen real time?

[@aloonz8929]

thank you!

[@activelivingchallenger4298]

I don't think you need to use dup2 to implement redirect but I guess he is just using dup2 to show how it works. If you close stdout before calling open what the open function will do is find the lowest file descriptor available (which is now STDOUT) and use that instead of creating a new file descriptor which is FD3 in this example.

[@shelbys4252]

I love u

[@shubhambhakuni9306]

how to reset output to stdout?

[@ibthajsami8497]

same Question!

[@e-leman]

you have to store it in another fd and dup2 to 1 again after you done

[@CNET24th]

why do you sound like the guy from khanacademy?

[@chamarasilva7700]

how to reset stdin/out to the terminal?