Exercise #1 Usefull functions

Following are links to man pages of system calls and C-Library functions that might be relevant to the exercise.

System related functions
fork()
pipe()
dup2()
kill()
signal()
sigaction()
sigprogmask()
execve() - system call / exec() C-Library functions.
sigsetops
exit()
getenv()

Strings functions
strchr()
strstr()
strlen()

Memory functions
malloc()/free()
memcpy()