I am writing a collectd nagios custom check script in bash. The problem I am having is that nagios shows hostnames as host.name.domain but collectd holds WSP files as host_name_domain. My question is how can I make a variable convert the hostname that it gets from nagios (host.name.domain) to collectd format (host_name_domain).
This is the part where the convertion has to occur. So the WSP_PATH would give out collectd format of hostname in variable $NHOST