Man Pages – Linux Manual Pages

execve – execute program
USAGE
#include <unistd.h>

int execve(const char *filename, char *const argv[],
char *const envp[]);

DESCRIPTION
execve() executes the program [...]

daemon – run in the background
USAGE
#include <unistd.h>

int daemon(int nochdir, int noclose);

DESCRIPTION
The daemon() function is for programs wishing to detach themselves from
the controlling terminal and run in the [...]

clone, clone2 – create a child process
USAGE
#include <sched.h>

int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg);

_syscall2(int, clone, int, flags, void *, child_stack)

_syscall5(int, clone, int, flags, void [...]

tcsh – C shell with file name completion and command line editing
USAGE
tcsh [-bcdefFimnqstvVxX] [-Dname[=value]] [arg ...]
tcsh -l

DESCRIPTION
tcsh is an enhanced but completely compatible version of the Berkeley
[...]