When you have a question such as "how to copy a file", what do you do to find a solutions ?

There's a Perl question and a meta-question being posed here. The question is about copying a file. The meta-question is how do you find out about stuff.

To assist the searcher, I'd suggest looking for information that answers these questions, in the following order:

• Can Perl do that directly (e.g. grep, file exists test (-e))?
• Is there a Perl module to do that (e.g. Net::Ping, CGI and of course File::Copy)?
• Must we shell out and run a command (e.g. installation specific commands, launching applications that communicate by pipe, commands not yet wrapped by a Perl module available on CPAN)?

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