Perl Training Logo: Praying Mantis

Showing examples of the power of Perl in short scripts. These scripts can be used on Windows/Unix/Linux/...

Rename all files with .txt extension to .xyz extension
foreach $old (<*.txt>) {
   ($new = $old) =~ s/txt$/xyz/;
   rename $old, $new;

Processing command line aruments (user switches) is easy

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