captcrash has asked for the wisdom of the Perl Monks concerning the following question:

I need to modify the following string
$filename = "/wek/hep/bin/defaults.import"
to
$filename = "/wek/hep/bin/defaultsxxxx.import"
where xxxx is the value of an environment variable called APPL_ENV

Edit: Changed title to something more meaningful - davorg

Replies are listed 'Best First'.
Re: Help? Please! Quick!
by ccn (Vicar) on Jul 23, 2004 at 16:11 UTC 

    $filename = "/wek/hep/bin/defaults$ENV{APPL_ENV}.import";

    [download]
    or 
    $filename =~ s/\./$ENV{APPL_ENV}./;

    [download]
    also see "Quote-and-Quote-like-Operators" part in perlop
[reply]
[d/l]
[select]
      ccn, You are a blessing! Checked the code, works great, Thanks! you just made my weekend less stressful!
[reply]

        Just out of interest, which piece of the documentation would have needed to be changed for you to be able to work that out for yourself?

        --
        <http://www.dave.org.uk>

        "The first rule of Perl club is you do not talk about Perl club."
        -- Chip Salzenberg

[reply]
Re: Help? Please! Quick!
by davido (Cardinal) on Jul 23, 2004 at 16:15 UTC

    That's a terrible node title. Help will come when it does, and "Help?" says nothing about what you're asking. 

    my $filename = "/wek/hep/bin/defaults.import";
$filename =~ s/(defaults)(\.import)/$1$ENV{APPL_ENV}$2/;

    [download]

    Note, environment variables are considered tainted data by taint mode, and using raw, unchecked ENV data in a filename can be risky.


    Dave

[reply]
[d/l]
    A reply falls below the community's threshold of quality. You may see it by logging in.

Back to Seekers of Perl Wisdom