Re:

[Gene Raytsin <pal_(_at_)_acedsl_(_dot_)_com>]

ps|grep -v ls
:)


man execl
[skip]

RETURN VALUES
If any of the exec functions return, an error has occurred.  The return
value is -1, and the global variable errno will be set to indicate the
error.


John D. wrote:
> /*
> How can I stop a process from being listed in ps?
> My program calls system functions (i.e. system("ls -lR")), 
> how can I stop this internal function call from showing
> up with the ps command?
>
> Also, out of curiosity, the exec{l*,v*} commands don't seem
> to return to the calling program, but instead exit
> directly back to the OS. This seems strange.
> Using OpenBSD 3.2 with gcc, if anyone cares.
> */
>
> /*Demonstrates how execl() never returns!*/
> #include <unistd.h>
>
> int main(void) {
> 	printf("Good file listing:\n");
> 	execl("/bin/ls","ls",0);
> 	printf("never gets here!\n");
> }