Cristi Mitrana wrote:
On 10/30/06, Ralph Alvy <ralvy@xxxxxxxxxxxx> wrote:
Cristi Mitrana wrote:
[..]
>
> That is because the new Ubuntu release uses dash instead of bash for
> /bin/sh and hence all bash constructs are not supported.
>
Isn't that a rather severe change?
It is actually, since dash is just a minimal POSIX shell without all
the features that bash has it.
Any script that uses bash constructs should have #!/bin/bash at the
beginning instead of #!/bin/sh. It's more of an annoyance this days,
at least on linux, because bash is always available in any distro and
it is the default shell.
Umm, I believe that all current releases of Linux have
$ ls -l /bin/sh
lrwxrwxrwx 1 root root 4 Oct 20 2004 /bin/sh -> bash
AND bash also behaves somewhat differently when invoked
as sh.
IMO, use of bash-specific features in released scripts is
a bad idea, anyway. It results in extra maintenance.
Mike
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