Substring for command line entry

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

I am trying to get something from command line where it reads the string and inserts the string inside of itself. Such as:

 
myscript name
[download]

output would be:
nanameme

I know I need to use the substr() and length() functions. Am I getting close here??

                 my $argv = $ARGV[0] || die "No parameters given.\n";

                 foreach $argv
                 {
                     
                     substr($argv, 3, length($argv))
                     print $argv;
                 }
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•Homework alert! Re: Substring for command line entry by merlyn (Sage) on Jun 21, 2002 at 18:53 UTC
In the absence of a practical application for such a trick, I will call this one as homework unless otherwise stated. Please do not answer this question. You are likely helping someone cheat. -- Randal L. Schwartz, Perl hacker	[reply]
Re: Substring for command line entry by Abigail-II (Bishop) on Jun 21, 2002 at 18:29 UTC
No, you are not getting close. You don't specify what you want to do, all you do is give 1 example, and the code is so off it's unguessable what you want. Do you want to repeat every two characters? Then you could just do: `die "No parameters given\n" unless @ARGV; $ARGV [0] =~ s/(..)/$1$1/g; print $ARGV [0], "\n";` [download] If you want to do something else, please be more specific. Abigail	[reply] [d/l]
Re: Substring for command line entry by stajich (Chaplain) on Jun 21, 2002 at 18:49 UTC
If you want to insert into a part of a string you can use substr as shown below, but a clearer question will get you a better answer. `substr($argv,2,0) = $argv; print $argv;` [download]	[reply] [d/l]
Re: Substring for command line entry by little (Curate) on Jun 21, 2002 at 19:30 UTC
Wether homework or not, I highly recommend studying the Getopt module which is part of the standard distribution and can handle command line input pretty well. Have a nice day All decision is left to your taste	[reply]
Re^2: Substring for command line entry by Aristotle (Chancellor) on Jun 21, 2002 at 19:40 UTC
The `Getopt::` modules don't do anything that could help him though. Makeshifts last the longest.	[reply]
Re: Re: Re: Substring for command line entry by little (Curate) on Jun 21, 2002 at 19:44 UTC
At least its a starting point if you need to write shell scripts or ambivalent ones. Only if you know what your input is you can process on the input (as is). Have a nice day All decision is left to your taste	[reply]