David Lehmann wrote:
> > Subject: Re: failed grep should cause subshell to exit
> > set -ex
Insert much previous discussion, search the archives, about why set -e
is really a terrible paradigm for the shell. Here is a reference.
http://mywiki.wooledge.org/BashFAQ/105
If you want
On 2013-08-27 03:48, Chris Down wrote:
> It does -- like Andreas said, it just makes it immune to `set -e'.
>
> $ set -e
> $ > file
> $ ! grep foo file
> $ echo $?
> 0
Or, perhaps more closely matching your case:
$ set -e
$ echo foo > file
$ ! grep foo file
fo
On 2013-08-26 21:41, David Lehmann wrote:
> I expected the '!' to reverse the exit code, such that if the grep return 0
> (success), the expression would return 1 (failure); if the grep returned
> non-zero (failure), the expression would return 0 (success). i.e. I
> expected the '!' to behave lik
Andreas,
I expected the '!' to reverse the exit code, such that if the grep return 0
(success), the expression would return 1 (failure); if the grep returned
non-zero (failure), the expression would return 0 (success). i.e. I
expected the '!' to behave like it does in C.
-David
On Mon, Aug
David Lehmann writes:
> ! grep hello x
! causes the shell to ignore -e.
Andreas.
--
Andreas Schwab, SUSE Labs, sch...@suse.de
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"And now for something completely different."
