How to read command-line arguments in a PERL script

To read arguments from a PERL script you use the environment variable ARGV.

• Arguments are stored in the array @ARGV
  • First Argument: $ARGV[0]
  • Second Argument: $ARGV[1]
  • Third Argument: $ARGV[2]
  • etc.

• Example
  • ./script.pl arg1 num2 bob
    • $ARGV[0] == "arg1"
    • $ARGV[1] == "num2"
    • $ARGV[2] == "bob"

• To get the total number of arguments
  • $numberOfArguments = $#ARGV + 1;

• To read all arguments as one string
  • $arg_string=join(' ',@ARGV);

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