[Cialug] [OT]: Shell script globbing

[Matthew Nuzum]

On Dec 20, 2007 1:58 PM, Major Stubble <major.stubble at gmail.com> wrote:

> It is the default shell for Solaris.  Other Unix systems have some
> version of it available.  Linux and BSD typically have pfksh, which
> to my eyes seems less restrictive than the pure ksh's of the Unix world.
>
> I myself will typically use sh before ksh or bash for most scripts
> since it is the most restrictive of all.  That said, I won't work in
> a shell environment without my vi keys, so if I am working in bash,
> it have to 'set -o vi'.
>
> All that said, I have never been on a Unix system without ksh.  It is
> also true that I have not been on a Linux system without bash.
>

You need to be careful though. If you assume bash then you should use
#!/bin/bash for your shebang. In Ubuntu 6.10 and newer, /bin/sh is linked to
dash, which is much more restrictive and tries not to make too many
non-posix assumptions. Its also much faster than bash, which is why it's
linked as /bin/sh. (to make boot up faster, which it apparently did)

cf. https://wiki.ubuntu.com/DashAsBinSh

-- 
Matthew Nuzum
newz2000 on freenode
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