What effective user is this script running under? Do they have permission to write to /var/www ?

Net::SSH is just a wrapper around your local ssh command, so could this be an underlying permissions issue?

Maybe Net::SSH::Perl is an option?

Edited to correct links 20101207 @ 13:34 - CB

In reply to Re^3: Net::SSH::Expect login using SSH keys by cjb
in thread Net::SSH::Expect login using SSH keys by ashok.g

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