Mac OS X: If Terminal is loading slowly on your Mac (for me, slow loading in Terminal is more than five seconds), try clearing out the ASL logs. For reasons I do not understand, ASL logs make Terminal load really, really slowly. You can clear out the ASL logs by executing this command: sudo rm -f /private/var/log/asl/*.asl Before executing that command, though, make sure you don't need those logs.
![Speed Up Terminal by Clearing ASL Logs](https://cdn-ak-scissors.b.st-hatena.com/image/square/d7e6a6f5469cad912e746d908411e51ca810f9c1/height=288;version=1;width=512/https%3A%2F%2Fx.kinja-static.com%2Fassets%2Fimages%2Flogos%2Fplaceholders%2Flifehacker.png)