On Saturday 03 April 2010 04:22 PM, Cameron Simpson wrote: > On 03Apr2010 17:07, Dave Ihnat<dihnat@xxxxxxxxxx> wrote: > | On Sat, Apr 03, 2010 at 01:53:40PM -0700, Suvayu Ali wrote: > |> Whenever some job is sent to the background and it finishes, it displays > |> a message on the shell with the exit code. ... > |> ... > |> I understand that I can get the exit code with $? but is there some way > |> I can get the associated message (Done/Terminated/Sementation Fault...) > |> with the exit code? > | > | Unfortunately, every exit code is a function of the individual program > | that last ran, or the shellscript itself. Do a man on the various > | commands; you'll find a wide range of exit codes. About the only thing > | you can really count on--usually--is that an exit code of zero means > | everything was OK. > > However, in the context of Suvayu's query (getting the _shell_'s job > control messages) the codes are universal, since the shell's knowledge > is as non-specific as you describe. > > So the shell can report Terminated and Segmentation Fault reliably and > Done versus failed because the wait status has distinct information. > So he should be able to check done versus failed ($? == 0 versus > nonzero), and he may find the shell returns negative values for > "terminated by signal N". Core dumps may not be exposed by the shell. > > Suvayu: try this: > > sleep 3600& > kill -9 $!; wait; echo "\$?=$?" > > and repeat with various kill numbers. See if you get anything useful. > Thank you Cameron for the hints! With some more thinking and some help from my roomie, I found something useful to work with. Substituting `n' below gives me quite a bit to experiment with. :) $ sleep 3600 & $ pid=$! ;kill -n $pid;wait $pid;echo "$pid exited with $?" > Cheers, Thanks a lot. :) -- Suvayu Open source is the future. It sets us free. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
