Atomic I/O letters column #45:
I'd like to be able to keep tabs on how long my WinXP computer's been running since the last time I rebooted. I know there are plenty of uptime monitoring utilities with all kinds of features, but can't I just use a console command?
You're looking for the 'systeminfo' command. It defaults to spitting out a bunch of configuration data for the computer you're using, including the uptime. You can also use it with the /s option to get the same info from any other Win2000 or WinXP computer on your network - or on the Internet - for which you have a login. The /u and /p options let you specify the username and password.