Usage: $ARGV[0] -type[A|B] -OEMID id -version nnnn -out filename

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I think you meant to use $0 instead of @ARGV:
$ARGV[0] is the first argument, not the program's command name itself. See $0 for the command name.

In reply to Re^2: calling a subroutine from another subroutine by toolic
in thread calling a subroutine from another subroutine by abcdefg

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