Examples:

pass them onto your Perl script command line

$ perl -le'print $ARGV[0]' 'Hello, World!'
Hello, World!
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$ FOO='Hello, World!'

$ perl -le'print $ARGV[0]' "$FOO"
Hello, World!
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set environment variables in your bash script

$ FOO='Hello, World!'

$ export FOO

$ perl -le'print $ENV{FOO}'
Hello, World!
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$ export FOO='Hello, World!'

$ perl -le'print $ENV{FOO}'
Hello, World!
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$ FOO='Hello, World!' perl -le'print $ENV{FOO}'
Hello, World!
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