Re: avoid mkdir/selinux failure when mknod is a shell built-in

[Matthew Woehlke]

Eric Blake wrote:
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> According to Jim Meyering on 4/16/2008 6:30 AM:
> | My first reaction was "great! that looks much better".
> | Unfortunately, the technique doesn't work with that shell:
> |
> |   openbsd$ ./mknod --version|head -1
> |   mknod (GNU coreutils) 6.10.188-7cb24
> |   openbsd$ PATH=. /bin/sh -c 'mknod --version'|head -1
> |   /bin/sh: mknod: --: unknown option
> |   /bin/sh: mknod: usage: mknod [-m mode] name [b | c] major minor
> |   /bin/sh: mknod: usage: mknod [-m mode] name p
>
> That still uses a builtin.  You need an exec in the loop to force a PATH
> search (even command, which bypasses functions, won't bypass builtins).
> Or perhaps a forwarding command will help; do any of these work?
>
> $ /bin/sh -c '(exec mknod --version)' | head -1
> $ /bin/sh -c 'nice mknod --version' | head -1
> $ /bin/sh -c 'nohup mknod --version' | head -1

I realize you already pushed something, but for the record, wouldn't 
'env' work as well (and without the side effects)?

--
Matthew
> pinotree uses the large trout on tsdgeos and PutHuhn :)
> PutHuhn runs
> tsdgeos lights a fire and eats the trout
(with apologies to Pino Toscano, PutHuhn and Albert Astals Cid, who came 
up with this entirely on their own)