And, as LanX showed in Re^3: Regexp substitution using variables, you can now try 
$replacement = '@{[`ls`]};  # use dir on MSWin

[download]
or even rm -rf / or deltree or whatever the equivalent is. This is too strong.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re^6: Regexp substitution using variables by choroba
in thread Regexp substitution using variables by MikeTaylor

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