in reply to Printing to USB printer

Have you read the documentation?

Alternately, if you've installed it, read the doc from the command prompt (terminal) using $ perldoc Printer::ESCPOS.

You'll also benefit from reading some suggestions about how to post questions here: On asking for help and How do I post a question effectively?. And studying the markup directions wouldn't hurt, either.

Downvoted for a lazy post by a Monk of sufficient longevity to have known better.

Questions containing the words "doesn't work" (or their moral equivalent) will usually get a downvote from me unless accompanied by:
  1. code
  2. verbatim error and/or warning messages
  3. a coherent explanation of what "doesn't work actually means.

In Section Seekers of Perl Wisdom