Does the exit code indicate specific errors or does it just say that an error has occured?
On Fri, Oct 2, 2009 at 1:54 AM, James Carlson <[email protected]>wrote: > Vivek S wrote: > > I can spawn ifconfig, but then how do i recognize errors? > > It depends on how you spawn it. If you use system(3C) (not what I'd do, > but ...), then the return value is the exit code. Just test for non-zero. > > If you do fork/exec, then use wait(3C) or waitpid(3C) to get the > results. The "stat_loc" variable will be filled in with the exit code, > and will be non-zero in case of error. > > -- > James Carlson 42.703N 71.076W <[email protected]> >
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