execle
execle(prog, argv0, NULL, env);
execle(shell, sh, NULL, env);
execle(_PATH_BSHELL, "-sh", NULL, env);
execle (pwd->pw_shell, pwd->pw_shell, "-c", cmd, NULL, env);
int execle(const char *, const char *, ...);
if(execle("/bin/sh","sh",(char *) NULL, nenvp) != 0)
execle(PP, "ppplogin", ttyn, (char *) 0, env);
execle(LO, "login", AL ? "-fp" : "-p", name,
execle(_PATH_REBOOT, "fastboot", "-l", nosync,
execle(_PATH_HALT, "fasthalt", "-l", nosync,
execle(_PATH_HALT, "fasthalt", "-l", "-p", nosync,
execle(_PATH_HALT, "fasthalt", "-l", "-c", nosync,