#protip: if you don’t like the new OSX Photos app and don’t want it opening when you plug your iDevice in, plug in the device, open Image Capture, make sure this thing is showing:

and select the option you want (Photos, iPhoto, Image Capture, nothing)

Broken your mac by removing the execute permissions on /bin/bash, or otherwise need to get shell access to fix something? (Say, for example, you were foolishly trying to patch shellshock). Don’t worry! It’s concerningly easy.

1. Reboot your mac holding down Cmd+R
2. Go Utilites → Terminal
3. You’re currently in a recovery partition. cd /Volumes/Macintosh HD/bin
4. Do whatever you need to do to fix your machine, e.g. chmod a+x bash
5. Restart, and everything should be fine.