Hi to everyone,
I am using linux from scratch and I was trying to implement the sleep function in a simple main in c++.
Can it be that on Linux from scratch the sleep function is not recognised?If I am right do you know any other way to "sleep" the process for 1 second?
Thank you in advance.

Hi,

You are using LFS? To do what?

LFS is just a very basic linux environment and not (very) useful to do day-to-day stuff with.

You need at least the first three chapters of BLFS and even then you don't have too much to work with. BLFS makes LFS workable and fills the bare LFS framework with goodies and must haves.

For example: BLFS adds a sane user environment (which is not done in LFS).

Hope this clears things up.

According to my build of LFS-6.3 using the live-cd sleep is provided by LFS.
It is part of the coreutils package and is found in /bin.

It should also be present on newer versions like LFS-6.6:
file:///home/hoes/Desktop/book-lfs/LFS-BOOK-6.6-HTML/chapter06/coreutils.html.

But note that sleep is a bash program.
If you are programming in C++ you can't just call shell programs.
You need to use libraries with the appropriate commands.

Maybe this thread in the ubuntu forum is of use to you:
http://ubuntuforums.org/showthread.php?t=296142
It refers to a library that contains sleep and a way to create sleep using the time library.

Your question is more about programming in general than about LFS.
I hope this is helpful, but maybe it's also a good idea to look up a tutorial on c++ programming and library calls on linux.

Good luck.

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@hoes: If the OP only installed LFS, s/he doesn't have a good working environment yet (see post #2) and would make the problem LFS specific and not c(++) specific.

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