Le 19.06.2014 16:22, Henrique de Moraes Holschuh a écrit :
On Thu, 19 Jun 2014, berenger.mo...@neutralite.org wrote:
This syntax "$(command)" is not portable.
It is a POSIX shell construct. Anything that doesn't implement it
should
not be linked to /bin/sh in the first place.
So I was wrong. Not really surprising honestly, but I think I have seen
such assertion somewhere else from someone more knowledgeable than me.
http://pubs.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html
section 2.6.3.
HOWEVER, $(something) and `something` are not equivalent in POSIX,
they have
different behavior re. expansion of "something". The code appears to
be
using $() correctly, though.
What is the difference then? Expansion in shell is a frequent issue for
me when I try to write my scripts.
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