On 2011-03-28 09:10:07 Michael P. Soulier wrote:
>Is this syntax not supported by posix?
>
>cat /etc/aliases.{1,2} > /etc/aliases
No, brace expansion is not required by any (published[1]) edition of POSIX or
the Single UNIX Specification.
For this case though, you can generally use (cat /etc/aliases.[12] >
/etc/aliases).
[1] I'm not sure about the work-in-progress SUSv4 or a work-in-progress POSIX,
if one exists.
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