One way would be to read the file into a string, put qq (with a delimiter that doesn't occur in the file) around it, and eval it 

$APPNAME = "AnyName";

open my $fh, "<", "prog_file" or die $!;
my $lines; { local $/ = undef; $lines = <$fh>; }

print eval "qq|$lines|";

[download]

Another way would be to put $lines = qq| ... |; around the entire content of the file (in the file itself), and then use do 

$APPNAME = "AnyName";

do "prog_file";
print $lines;

[download]

A third way would be to use regex substitution to replace strings like $APPNAME in the lines, but only if unescaped...

But maybe what you're really looking for is a templating system, like Text::Template, the Template Toolkit, etc...

In reply to Re: Perl Script to write a perl script by almut
in thread Perl Script to write a perl script by electroman00

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