Yup. When I'm doing my "real" work, it's all scripts and command line.
All installs/scripts/monitoring the email log/etc, are run at the command line either at the console or PUTTY, but all my website hosting services are setup in ISPConfig. All other server management is done in Webmin. Fabulous application.
I also have a Windows 7 Ultimate machine with a custom app on it, that for some reason, I can't reach it from the ‘outside’. Frustrating Windows!