| Now that we've seen the hierarchy and the type of data that is stored there, we can add the devices we require. The first task to perform is to clear out any existing configuration details and start with a clean sheet, so let's do that now. When the system is installed, at least one port monitor will usually be created, and will probably be a service on the "zsmon" tag. Completely removing this tag will allow us to reuse it later and will hopefully make things clearer when we create the services on the system: hydrogen# sacadm r p zsmon hydrogen# sacadm l No port monitors defined hydrogen# Good. Everything has gone. Running pmadm to list the current port monitor details will also confirm that they've been removed: hydrogen# pmadm l No services defined hydrogen# We could actually leave it at this point and start to reconfigure the ports as we require, but for this chapter we'll also remove the existing zsmon hierarchy. This will allow us to see how it is rebuilt automatically: hydrogen# rm -r /etc/saf/zsmon hydrogen# ls -l total 4 prw------- 1 root root 0 Mar 9 13:03 _cmdpipe prw------- 1 root root 0 Mar 9 14:12 _sacpipe -r--r--r-- 1 root other 13 Mar 9 14:25 _sactab -rw-r--r-- 1 root sys 45 Aug 27 2000 _sysconfig hydrogen# Looking at the contents of /etc/saf, we can see that we are now left with the top-level configuration files only. We've already looked at the _sysconfig file, but let's look at _sactab to see what it contains now: hydrogen# cat _sactab # VERSION=1 hydrogen# Just as we thoughtapart from the version number the file is empty, confirming that all the services have been removed. | 
