Re: Add "nice -10" to /etc/crontab run-parts commands?
On Tue, Jun 01, 1999 at 04:33:24PM +0200, Detlev Zundel wrote:
> Tommi Virtanen <email@example.com> writes:
> > > onacpow && run_heavy_job
> > The later will crash & burn if any script uses set -e
> > (which is usually encouraged).
> > if onacpow; then run_heavy_job; fi
> Hm? Am I missing something here? Excerpt from the bash(1) man-page:
> set [--abefhkmnptuvxBCHP] [-o option] [arg ...]
> -e Exit immediately if a simple command (see
> SHELL GRAMMAR above) exits with a non-zero
> status. The shell does not exit if the
> command that fails is part of an until or
> while loop, part of an if statement, part
> of a && or || list, or if the command's
> return value is being inverted via !.
> So bash doesn't crash or burn - is this behaviour limited to bash?
false && echo foo will always cause bash to exit.
If there is something else in the script, it will not be
executed, even if the onacpow test would only _seem_ to
apply to that one line. This is in this case unintended
Fortunately the original usage suggestion was for a
one-line crontab invokation, where
1) -e is not in effect
2) there is no "rest of the script"
End of thread?
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