Archive Photoshop Tips Fonts Design Promoting Web Hosting Frontpage . Changes the root directory for the process and its children. Returns the child pid to the parent process and zero to the child process.
Sets teh current priority for a process, process group, or a user.
Returns the number of seconds actually slept. Calls the system call specified in the first element of the list, passing the rest of the list as arguments to the call. Does exactly the same thing as exec LIST except that a fork is done first, and the parent process waits for the child process to complete. If EXPR is omitted, returns current umask value. Performs the same function as the corresponding system call.