Petr Vileta <> wrote:
> ----- Original Message -----
> From: "Arijit Das" <[EMAIL PROTECTED]>
> To: "[email protected]"
> <[email protected]>;
> "[email protected]"
> <[email protected]>
> Sent: Tuesday, May 30, 2006 8:51 AM
> Subject: How to modify $ENV{PATH} portably?
>
>
>> Hi,
>>
>> The format of env variable PATH seems to change with OS/shell. For
>> example, in sh it is like
>>
>> "/dir1/bin:/dir2/bin:."
>>
>> while in csh, it is like
>>
>> (/dir1/bin /dir2/bin .)
>>
>> I need to search for "/dir2/bin" path component in my $ENV{PATH}, and
>> then, insert "/newpath/bin" just before "/dir2/bin". But due to
>> different format of PATHs in different os/shells, I am not able to
>> do that in a very clean way.
>>
>> Is there any Perl Array (somewhat like @INC) which I can modify to
>> have my PATH changed?
>>
> Just put into $ENV{} new value
> $ENV{'path'} = '/dir1/bin /newpath/bin /dir2/bin .'; or use
> regexp to modify it.
> This change is valid for current running skript and operating system
> know nothing about path change.
Sorry, Petr, but I don't think that will do anything useful. In csh,
$path is not an environment variable, it is a special variable that is
kept synchronised with the $PATH environment variable. All perl sees,
when executed from a csh shell, is the $ENV{PATH} environment variable.
Similarly, setting $ENV{path} sets a different environment variable
(i.e. $path) which has nothing to do with the PATH environment variable,
or the $path special variable in any child process that happens to
execute the csh shell, except possibly to cause confusion.
HTH
--
Brian Raven
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