When you run your program, just specify the filename as an argument on the command line: 
./program.pl file1.txt <optionally more files>

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The filenames can then be found inside the script in the global array @ARGV.

In reply to Re: how can I input different files as an argument while I am running my perl program? by plaid
in thread how can I input different files as an argument while I am running my perl program? by Anonymous Monk

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