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Can someone explains me why this is not working as I expect it?
zen:~ emx$ echo ABC | perl -nle "print unpack 'H*'"
414243
zen:~ emx$ echo 414243 | perl -nle "print pack 'H*'"
zen:~ emx$
Somehow I was expecting the second command to print ABC
unpack()uses$_by default if you do not provide it with a second parameter;pack()on the other hand, does not.