I get asked about topsave all the time. I run it in cron every minute and capture about a week's worth of top output.
topsave
Linux LVM (Quick Reference)
These will help you avoid a screensaver in a corporate environment:
MainClass.Java - moves a mouse
MainClass.class - moves a mouse
Beej's Guide to Network Programming
Beej's Guides
admin 1 class
Multipath Devices
classroom-ks.cfg
foo.cfg (new classroom.cfg)
Linux Performance Tools (by /u/redct on reddit)
New Sysadmin List