What is Perl one-liner

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What is Perl one-liner?

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There are two ways a Perl script can be run:

From a command line, called one-liner - That means you type and execute immediately on the command line. You'll need the -e option to start like "C:\ %gt perl -e "print \"Hello\";". One-liner doesn't mean one Perl statement. One-liner may contain many statements in one line.
From a script file, called Perl program.

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