I've been doing a lot of MOSS installs lately. I've become quite familar with stsadm. Here are some other 'command-line' resources for MOSS.
PowerShell Pack for SharePoint
http://code.msdn.microsoft.com/psp4sp/Release/ProjectReleases.aspx?ReleaseId=1363
Gary LaPoint's stsadm extension (a MUST need)
http://stsadm.blogspot.com/
Codeplex powershell for Sharepoint
http://www.codeplex.com/PSBB
Sharepoint Deploy
http://www.codeplex.com/sharepointpdeploy
SharePoint: Config XML and PSConfig
http://www.alpesh.nakars.com/blog/config-xml-and-psconfig/
Between these and psconfig, stsadm There is a lot of command line tools. I've personally not used the Powershell packs, but now I know about them, I'll be trying them out.
Happying MOSS,
Steve