about fork and execve system call

Question

It is said that fork system call creates a clone of the calling process, and then (usually) the child process issues execve system call to change its i

Answer 1

• exec: Execute new process
• v : use array of arguments
• e: Specify as well the environment

Other variations of exec abound:

int execl(const char *path, const char *arg, ...);
int execlp(const char *file, const char *arg, ...);
int execle(const char *path, const char *arg,..., char * const envp[]);
int execv(const char *path, char *const argv[]);
int execvp(const char *file, char *const argv[]);

• l: list arg on function
• p: use $PATH to locate executable file