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I think the OP wants to manipulate a YAML file with a Perl script (according to the title of the post), so yes, please do check out the various YAML handling modules on CPAN.
My favourite is YAML::Tiny - simple and leight-weight and good for most cases. You would read the YAML file into a Perl data structure, manipulate the data in there and then dump it to a new YAML file (or overwrite the existing one). Have a go and post your code here if you are running into trouble.

In reply to Re^2: How to make changes in yaml file thorugh perl by tospo
in thread How to make changes in yaml file thorugh perl by Anonymous Monk

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