When editing compilable code in Vim, you can use :make rather then :!make to trigger a build.

This will run Make, then jump to the first error. Additionally you can use :cn and :cN to jump to the next and previous error respectively.

VMsvga2 provides accelerated video for OSX guests in VMWare. This support is provided by VMTools for Windows and Linux guests, but is not available for OSX without this third party driver.

http://bios-pw.org/ is a useful utility for "recovering" laptop passwords from some common BIOS.
On these BIOS, if you fail login too many times, you are given a prompt containing the password hash. This utility generates a password with the same hash, allowing you access to the BIOS.

If you are using LDAP for logins, and attempting to run i386 executables on x86_64, you may need libpam-ldap:i386 and libnss-ldap:i386 . Otherwise if the program looks up user ID's, it will fail because of missing "optional" modules.

DebootstrapChroot describes how to very easily set up a chroot (including a i386 chroot on x86_64). It uses schroot to manage starting/ending the chroot, in a very easy to use manner. All mountpoints and file copying from the host to chroot etc are all managed by schroot.