If this script is to be used by other users (besides you), you should be aware that it's dangerous to use user-entered data without untainting it first. Use 'taint' mode by doing 
   #!/usr/bin/perl -wT

[download]
the "T" means "T"aint mode - it won't allow you to use any data from outside your program unless you untaint it first.

In reply to Re^2: Using a regex pattern from STDIN by hmerrill
in thread Using a regex pattern from STDIN by Anonymous Monk

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