Re: metapost not invoked? mpgraph.1 not created

[Ed L Cashin <ecashin@coe.uga.edu>]

Marc van Dongen <dongen@cs.ucc.ie> writes:

> Ed L Cashin (ecashin@coe.uga.edu) wrote:
> 
> : > it may well be that because it is not exported its value may be
> : > /usr/local/bin
> : 
> : Usually some system-wide resource configuration ("rc") file has
> : already exported the $PATH shell variable.  (It doesn't hurt to export
> : it again, though.)
> 
> The point is, if people add things to the path *after* it is
> exported or add thing to the path as part of a shell-script,
> these additions will not be made known to subshells. You
> *have* to export it again. 

That's not true for Bourne-style shells:

    $ foo=hi
    $ perl -e 'print $ENV{"foo"} . "\n"'

    $ export foo
    $ perl -e 'print $ENV{"foo"} . "\n"'
    hi
    $ foo=hi,there
    $ perl -e 'print $ENV{"foo"} . "\n"'
    hi,there

I wouldn't know about C shells.

-- 
--Ed Cashin                    integrit file verification system
  ecashin@coe.uga.edu          http://integrit.sourceforge.net/