in reply to How to install CPAN modules

while installing some module using CPAN i'm getting error like  warning (usually harmless): 'YAML' not installed, will not store persistent state.why I'm getting this error?

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Re^2: How to install CPAN modules (how to search)
by LanX (Saint) on Dec 27, 2013 at 10:12 UTC
    We are glad to help you learning to help yourself with simple means (well as far as possible: :)

    Googling

    "warning (usually harmless): 'YAML' not installed, will not store persistent state"

    will show you many hits!

    The second one is already an old perlmonks thread with the same question and a solution in the last post.

    Please try and tell us if it helped. :)

    Cheers Rolf

    ( addicted to the Perl Programming Language)

    PS: this time I'm not directly linking anymore, to encourage you practicing the search process.

    (No sarcasm!!!)

    see also Show Some Effort

    update

    and plz keep in mind that we warned you about modifying system Perl! Perlbrew would be easier.