On 09/20/2017 07:45 PM, Fam Zheng wrote:
>>
>> has a flaw that $? is no longer what you want, at which point you would
>> have to introduce a temporary variable. But we're using bash, so you
>> can instead write this as:
>>
>> if test "${PIPESTATUS[@]}" != "0 0"; then
>
> Hmm, with exactly this line here I get something like:
>
> ./scripts/archive-source.sh: line 36: test: too many arguments
D'oh - [@] causes word splitting (same as "$@"); we want [*] instead:
if test "${PIPESTATUS[*]}" != "0 0";
>
> But with
>
> if test "${PIPESTATUS[0]} ${PIPESTATUS[1]}" != "0 0"; then
or that's a manual way of spelling the auto-array-concatenation that you
get with [*].
>
> it seems to work fine. What is the magic here?
>
> Fam
>
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
signature.asc
Description: OpenPGP digital signature
