Re: Non-POSIX shells

[Drazen Kacar <dave willfork com>]

ERDI Gergo wrote:

> you realize, of course, that this is useless for shell scripts when you
> need to write something in the shebang line.

It is; welcome to the POSIX world. POSIX cannot solve the shell
bootstraping problem because it would have to require something from
non-conformant environments. Since they are non-conformant, they don't
have to conform to anything POSIX says.

On Solaris you could solve the problem in practice by writing a /bin/sh
script which would invoke "/bin/getconf PATH" and stick the result
(/usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin on current OS
versions) in the PATH variable and then invoke sh utility. Then you'd get
POSIX sh utility.

However, the PATH argument for the getconf utility is a Solaris extension
and not universally available. So you'd have to implement a different
procedure for different operating systems. Which isn't very appealing.

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