A quick list of SGI IRIX commands that I've had laying around for forever.  Most of the commands will work with any flavor of UNIX and some work in Linux.

hinv [hardware inventory]
hinv –mvv [very verbose]

chkconfig list [shows daemons/services and their startup mode]

chkconfig <daemon> on|off [to set <daemon>]

uname [display current major version name]

uname -a [display hostname, OS release, version and CPU]

uname –R [display current major OS version and overlay version name]

/usr/gfx/gfxinfo -vv [graphics configuration]

ifconfig [displays NIC settings and status]

ifconfig -a [displays the current configuration of the network interfaces]

netstat [network diagnostics - displays network interface statistics]

netstat –ai [displays the current network configurations and statistics]

netstat –ain [display TCP/IP settings for all physical interfaces]

netstat –rn [display routing information]

sysinfo -vv [display system ID]

versions [currently installed software version]

versions –b [simplified list]

versions remove <package> [uninstall software <package>]

versions l grep -i patch [display list of <patches>]