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Message #46281
[Bug 1319655] Re: getopt example in docs incorrectly implies /bin/sh may not be used (PATCH)
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remove the "patch" flag from the attachment, remove the "patch" tag, and
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** Tags added: patch
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https://bugs.launchpad.net/bugs/1319655
Title:
getopt example in docs incorrectly implies /bin/sh may not be used
(PATCH)
Status in util-linux package in Ubuntu:
Confirmed
Bug description:
getopt(1) works with /bin/sh, bash, and probably other Bourne-ish
shells (as well as csh-family shells with the appropriate option).
However the included examples give the impression that something about
getopt(1) makes it incompatible with /bin/sh, leading one to assume
that scripts MUST use bash instead of sh. The author probably meant
merely that the "bash" example would not work with tcsh; however less-
experienced script writers might not find that to be obvious.
First of all, the Bourne-syntax example unnecessarily uses bash, i.e.
leading one to wonder why the more-universal sh shell could not be
used. And there is a comment in the example saying "This program
will only work with bash(1)".
SUGGESTED IMPROVEMENT (patch attached):
. Rename /usr/share/doc/util-linux/examples/getopt-parse.bash to
getopt-parse.sh
. Change the example to use /bin/sh instead of bash, and change the
comment to say that that example works only with sh-compatible shells,
including bash.
P.S. The --shell option to getopt(1) accepts arguments 'sh', 'bash',
'csh', and 'tcsh', however internally there is no difference between
'sh' and 'bash' (or between 'csh' and 'tcsh'). See source code at
https://kernel.googlesource.com/pub/scm/utils/util-linux/util-
linux/+/v2.22.2/misc-utils/getopt.c
ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: util-linux 2.20.1-5.1ubuntu9
ProcVersionSignature: Ubuntu 3.11.0-20.34-generic 3.11.10.6
Uname: Linux 3.11.0-20-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
Date: Wed May 14 21:00:48 2014
InstallationDate: Installed on 2013-08-06 (282 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
SourcePackage: util-linux
UpgradeStatus: Upgraded to saucy on 2013-10-24 (202 days ago)
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