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• -w

• The Hash-bang line, or how to make a Perl scripts executable on Linux

• The problem with Perl 4 style libraries

• What are -e, -z, -s, -M, -A, -C, -r, -w, -x, -o, -f, -d , -l in Perl?

• How to freak-out your co-workers with a for loop?

• Dancer, the light-weight Perl web framework