Tim wrote:
> Secondly, where is the perl interpeter installed, is it /usr/lib/perl5 
> or /usr/lib/perl I need to make a link from the interpeter to /usr/bin/perl 
> or change the first line of a lot of scripts, I am opting to make the link
>   
I would advise against making a symbolic link for perl - I have done 
that, and perl couldn't find its modules.  The symlink was from 
/usr/local/bin/perl to /usr/bin/perl, so perl looked in /usr/local/lib 
for modules, instead of /usr/lib.
Changing the header paths is very straightforward (assuming you are 
using a sh-based shell).  Use "which perl" to find out your default Perl 
program (here it is given as /usr/bin/perl).  If perl is not in your 
path, then "whereis perl" (UNIX) or "locate perl" (Linux) should find it 
- look for a line ending "/bin/perl".  
"list_of_programs_with_the_wrong_Perl_path" could be something like 
"/usr/local/bin/*.pl /usr/local/bin/startPerlPackage" (without the 
quotes).  Then:
    for ii in list_of_programs_with_the_wrong_Perl_path
    do
        sed '1s,^#![^[:space:]]*perl,#!/usr/bin/perl,' < $ii > 
/tmp/perl.tmp && mv /tmp/perl.tmp $ii
    done
There's probably a way to avoid the "mv" bit, but it's almost certainly 
not portable between Linux/Unix/shell variants.
Simon