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Re: different exit codes in $? and ${PIPESTATUS[@]}
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From: |
Eric Blake |
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Subject: |
Re: different exit codes in $? and ${PIPESTATUS[@]} |
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Date: |
Fri, 12 Oct 2012 15:40:56 -0600 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121009 Thunderbird/16.0 |
On 10/12/2012 03:36 PM, Wladimir Sidorenko wrote:
> Ok, thanks. I'll notice this for the future. It's of course arguable,
> whether PIPESTATUS stores a true value, since the '!' inversion
> keyword gets ignored in this case. But if it was intended, than it's
> ok.
Consider:
$ f() { return 2; }
$ ! f
$ echo $? ${PIPESTATUS[@]}
0 2
If PIPESTATUS included the effect of !, you would only ever be able to
see 0 or 1; but by having it be the uninverted status, you can see the
full 0-255 of the actual command prior to the inversion.
--
Eric Blake eblake@redhat.com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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- different exit codes in $? and ${PIPESTATUS[@]}, Wladimir Sidorenko, 2012/10/10
- Re: different exit codes in $? and ${PIPESTATUS[@]}, Andreas Schwab, 2012/10/10
- Re: different exit codes in $? and ${PIPESTATUS[@]}, Chet Ramey, 2012/10/12
- Re: different exit codes in $? and ${PIPESTATUS[@]}, Wladimir Sidorenko, 2012/10/12
- Re: different exit codes in $? and ${PIPESTATUS[@]},
Eric Blake <=
- Re: different exit codes in $? and ${PIPESTATUS[@]}, Chet Ramey, 2012/10/13
- Re: different exit codes in $? and ${PIPESTATUS[@]}, Wladimir Sidorenko, 2012/10/14
- Re: different exit codes in $? and ${PIPESTATUS[@]}, Andreas Schwab, 2012/10/14
- Re: different exit codes in $? and ${PIPESTATUS[@]}, Wladimir Sidorenko, 2012/10/14
- Re: different exit codes in $? and ${PIPESTATUS[@]}, Chet Ramey, 2012/10/14
- Re: different exit codes in $? and ${PIPESTATUS[@]}, Dan Douglas, 2012/10/14
- Re: different exit codes in $? and ${PIPESTATUS[@]}, Chet Ramey, 2012/10/14
- Re: different exit codes in $? and ${PIPESTATUS[@]}, Dan Douglas, 2012/10/15
- Re: different exit codes in $? and ${PIPESTATUS[@]}, Chet Ramey, 2012/10/15
- Re: different exit codes in $? and ${PIPESTATUS[@]}, Chet Ramey, 2012/10/14