On 02/28/2014 08:53 AM, Heiko Carstens wrote:
The question is: what should chcpu return if it partially succeeded? # chcpu -d 3-4 CPU 3 disabled CPU 4 does not exist If I remember correctly this was the reason to make it always return 0. However, it is indeed valid to say if *everything* failed, it should return an error. Hm?
Indeed, e.g. df(1) also fails if only a single mount point cannot be listed. Otherwise, the calling script could not rely on the exit code, and would still have to fall back to parsing the output. But thanks to your question I was reminded to have a look at *where* chcpu writes messages: $ chcpu -d 3-4 > /dev/null $ chcpu -d 3-4 2> /dev/null CPU 3 is already disabled CPU 4 does not exist $ I.e. chcpu does not write the error diagnostic to stderr ... humm. Have a nice day, Berny -- To unsubscribe from this list: send the line "unsubscribe util-linux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
