On Fri, Jun 24, 2011 at 09:18:14AM -0500, Chris Adams wrote: > Once upon a time, Darryl L. Pierce <dpie...@redhat.com> said: > > (mcpierce@mcpierce-laptop:~)$ pm-is-supported --suspend > > (mcpierce@mcpierce-laptop:~)$ echo $? > > 0 > > (mcpierce@mcpierce-laptop:~)$ pm-is-supported --hibernate > > (mcpierce@mcpierce-laptop:~)$ echo $? > > 0 > > (mcpierce@mcpierce-laptop:~)$ pm-is-supported --suspend-hybrid > > (mcpierce@mcpierce-laptop:~)$ echo $? > > 1 > > > > Though I'm questioning this last once since I tried to do: > > > > pm-is-supported --suspend-hybrid && echo $? > > > > and it never showed the RC, telling me the command itself failed. > > Remember: exit code of zero is "success", non-zero is "failure". It is > inverted from common usage, but allows for multiple "failure" exit > codes.
Right. The manpage for pm-is-supported says that a 0 exit code means the feature _is_ supported, and 1 means it's _not_ supported. So in the above case suspend and hibernate are (in theory) supported, yet both result in my laptop being non-responsive. And in the last case the fact that: pm-is-supported --suspend-hybrid && echo $? fails to output the exit code tells me the arg is causing pm-is-supported itself to fail. -- Darryl L. Pierce, Sr. Software Engineer @ Red Hat, Inc. Delivering value year after year. Red Hat ranks #1 in value among software vendors. http://www.redhat.com/promo/vendor/
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