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Where did you try the sleep? One time test >= is better, in case you sleep past.

i think using timer control and timer_tick event would be better. Google it.

stat(2): file status - Linux man page (http://linux.die.net/man/2/stat)

You don't allocate any memory for your "thread" variable to point to.

So "thread[loops]" point to some random location.

First off there is a limit to the number of open files

ulimit -n

That is as many as you should try to open.

Secondly, systems limits the number of threads you can create. You should use...

A 'fork' is used when there is no dependency related to the fork-ed process; things do not all have to be done sequentially.

Example 1.
you get up
you wake up your son/daughter
you take your...

Calling fork doesn't "make your program faster".

The point is, the parent and the child run separately. If you have two or more cores, they can run literally at the same time. They can work on...

Post your entire code. From the look of those warnings, there may be a problem with the way you declared your variables.

You also don't ever null-terminate your array, putting a '\0' as the last...

Post your entire code.

What is this for? printf("%c\n");

%c means 'print one character that I passesd as an argument' but you passed no argument. It's going to print whatever garbage happens...

Here is what POSIX.1 says:

If name is an invalid value, sysconf() shall return -1 and set errno to indicate the error.
If the variable corresponding to name is described in <limits.h> as a...

It returns some details on what you can and can't do to a file or terminal.

See man 3 fpathconf (https://www.unix.com/man-page/linux/3/fpathconf/).

O_APPEND guarantees that every write to the file will be at the end of the file. lseek guarantees that the file pointer is positioned to the current EOF of the file. It does not guarantee that...

In addition to what JohnGraham said, here are some examples:
List the files in a Unix directory with C (http://www.lemoda.net/c/list-directory/index.html)
List files in current directory - C / C++...

See the man pages for opendir() and readdir().

A simple translation from C to English is:

Read no more than BUF_SIZE bytes from the file associated with the file descriptor inputFd into the array of characters at the address specified by buf...

These errors are nothing to do with #include files - your compiler is finding them just fine.

Your problem is that the compiler can't find where these functions are defined - it's seen a header...