My requirement is to if that line exceeds it should print that information.

The script should print that information if that line exceeds what? I'm sorry, I'm not understanding what it is you're trying to do. The snippet you posted will grep through a file and print either "Yes, it is" or "nope, it's not", depending on whether any line in that file contains the string "Repsonse Queue Size: 0". Is that what you want it to do?

Some general tips:

• use strict;
• use warnings;
• Use lexical variables for filehandles ($MYFILE, not MYFILE).
• Use the 3-argument form of open and explicitely state you want to open your file for reading (<).
• Check errors when opening or closing files.
• Don't read the entire file at once, or you'll get into trouble with very large files.

Please do clarify what you want your script to do, though. Here are some nodes on how to ask questions:

• On asking for help
• How do I post a question effectively?
• How do I compose an effective node title?
• I know what I mean. Why don't you?
• How (Not) To Ask A Question
• XY Problem

Also, some nodes on how to format writeups etc.:

• Writeup Formatting Tips
• Markup in the Monastery
• Perl Monks Approved HTML tags
• What shortcuts can I use for linking to other information?
• How do I link to the Perl documentation?

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