If I run 'A=$(( 3 + 4 )); echo $A' on different shells, I get the
following results:
$ locate bin/bash
/usr/bsd/bin/bash
/usr/gnu/bin/bash
/usr/nekoware/bin/bash
/usr/openpkg/bin/bash
$ /usr/bsd/bin/bash --version
GNU bash, version 3.00.16(1)-release (mips-sgi-irix6.5)
Copyright (C) 2004 Free Software Foundation, Inc.
$ /usr/gnu/bin/bash --version
GNU bash, version 2.05b.0(1)-release (mips-sgi-irix6.5)
Copyright (C) 2002 Free Software Foundation, Inc.
$ /usr/nekoware/bin/bash --version
GNU bash, version 3.00.0(1)-release (mips-sgi-irix6.5)
Copyright (C) 2004 Free Software Foundation, Inc.
$ /usr/openpkg/bin/bash --version
GNU bash, version 3.00.16(1)-release (mips-sgi-irix6.5) [OpenPKG-CURRENT]
Copyright (C) 2004 Free Software Foundation, Inc.
$ /usr/bsd/bin/bash -c 'A=$(( 3 + 4 )); echo $A'
/usr/bsd/bin/bash: 3: command not found
)
$ /usr/gnu/bin/bash -c 'A=$(( 3 + 4 )); echo $A'
7
$ /usr/nekoware/bin/bash -c 'A=$(( 3 + 4 )); echo $A'
/usr/nekoware/bin/bash: 3: command not found
)
$ /usr/openpkg/bin/bash -c 'A=$(( 3 + 4 )); echo $A'
/usr/openpkg/bin/bash: 3: command not found
)
Having said that, the command "A=$(( echo 3 )); echo $A" results in "3)"
in bash-3 - which surely can't be right?!
The problem is that the rc script in /usr/openpkg/etc/rc uses exactly this
syntax, and so the errors are similar to:
$ /usr/openpkg/etc/rc all start
OpenPKG: start: /usr/openpkg/etc/rc: line 448: 0: command not found
openpkg/usr/openpkg/etc/rc: line 455: ): command not found
/usr/openpkg/etc/rc: line 665: [: ): integer expression expected
(there are a few more be default which I fixed, but didn't keep a backup
of the unchanged file)
I tried the same tests on my Linux machine, and all worked.
So is bash-3 broken on my platform (IRIX64)? I've seen no other problems
or incompatibilities - but this does seem fairly serious.
Cheers,
Stuart
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