You could leverage find and perl on the remote end. 
$remotehost="somehost.tld";
$remotedir="/some/dir/";
$cmd="/usr/bin/ssh $remotehost find $remotedir -type f -print".
     '| perl -ne \'chomp;$n=$_.q^.bak^;rename($_,$n)\'';
print "cmd is [$cmd]\n";
#uncomment after testing
#system($cmd);

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In reply to Re: Rename all files on remote server to *.bak recursively by kschwab
in thread Rename all files on remote server to *.bak recursively by nancylt723

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