Linux exec步骤族简单用法

Linux exec方法族简单用法

MAN (Manual pager utils) :
       execl, execlp, execle, execv, execvp ，execve- execute a file

       #include <unistd.h>

       extern char **environ;

       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[]);

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

char*argv[] ={"ls", "-l",".", NULL};char*envp[] ={ NULL};execve("/bin/ls", argv, envp);