Am 04.07.2018 um 23:05 schrieb ma...@apache.org:
Author: markt
Date: Wed Jul 4 21:05:58 2018
New Revision: 1835090
URL: http://svn.apache.org/viewvc?rev=1835090&view=rev
Log:
Consistently use $(...) rather than `...`
The uglyness of shell:
Backticks work in many shells, "$(..)" only in non-ancient shells. Our
scripts all declare that they want to get run by /bin/sh which can be an
unexpectedly old type of shell.
An example is Solaris 10, where /bin/sh is a very old (original) Bourne
Shell which does not support $(..) and for example also not "export
VAR=VAL" (instead only "VAR=VAL;export VAR").
I am not totally opposed against using newer shell constructs. But the
problem is platform independent shell coding. For some platforms /bin/sh
in our hashbang header is too old, but for other platforms /bin/bash
might not exist. There's no easy solution if we want to modernize -
except for deprecating platforms or letting users fix the scripts.
So it still might be best to stick to the old compatible constructs,
especially since our scripts are only doing basic stuff (which is good).
Just my 2c.
Regards,
Rainer
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