ADB not found after updating your SDK for 2.3 (Gingerbread)? Here’s the fix.
I edited my original post on setting up a .bash_profile to reflect the new changes, but I’ll cover it again here. Essentially, the 2.3 update seems to have moved all the tool scripts like adb from /sdk/tools to /sdk/platform tools.
If you’re using windows and executing adb from the local folder, you just need to go to /platform-tools instead of /tools. If you’re on a *nix machine, you just need to add /platform_tools to your PATH:
export PATH=${PATH}:/Users/yourname/whereveryoursdk/islocated/platform_tools
Should be good to go after that.