Tip: RVM + Pow

If you use RVM and Pow (http://pow.cx mac os x only), you will probably have to do this inside each of your ruby projects:

rvm env -- --env > .powenv

Rails (2 & 3) Rake console

A little script (./script/taskrunner) to run a little rake console without having to start up the env everytime, works with environment variables too.

to get it set up, run this from your rails project directory:

curl -o ./script/taskrunner https://raw.github.com/gist/1072723/61b9eb6d458e643b3ea9e679d6501c388f3d3377/taskrunner.rb
chmod +x ./script/taskrunner
./script/taskrunner

Rails: Edit the most recent migration

Handy little alias to quickly edit the most recent Rails migration in one command.