perl is the interpreter
for the Perl programming language (the Swiss Army knife of Unix
programming tools). The Perl program is provided via one or more
-e options. If no
-e options are
used, the first file named on the command line is used for the
program. See perlrun (1) for the full list of
For more information about Perl, see Learning Perl, Programming Perl, and Advanced Perl Programming, all listed in the Bibliography.