in reply to String Interpolation on single quote string?

Use string eval:

my $code = '$ENV{VARIABLE}/my/path';
eval $code;

[download]

Be very, very careful with this. Eval is like a Ring of Power: you can use it to get out of a bad situation, but you'll be attracting evil in the process.

"There is no shame in being self-taught, only in not trying to learn in the first place." -- Atrus, Myst: The Book of D'ni.

In Section Seekers of Perl Wisdom