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Using Perl

Perl programs can be invoked in several ways ...
  • giving the filename of the Perl program as a command line argument 

    perl PerlCodeFile.pl

  • giving the Perl program itself as a command line argument 

    perl -e 'print "Hello, world\n";'

  • using the #! notation and making the program file executable 

    chmod 755 PerlCodeFile
./PerlCodeFile