Today, I Learned...

Estimate cost of source code with sloccount

Open tmux windows/splits in the current directory

Add colors to ls output

Go to the previous directory in Bash

Lock OS X from the command line/tmux

PROMPT_COMMAND, and a simpler git prompt

Use Ctrl+F to bring up history

Kill a process by name with pkill

Unix Background Jobs

Double-click a surround in Terminal to select the matching symbol

Put set -e in bash scripts to exit on error

Create an ackrc file

Grab the last argument from the last command

Redraw your VIM screen with Ctrl+L

Use python -m SimpleHTTPServer to start a static web server

Ctrl+T shows you what your terminal is doing

Search all files with ack -a

Validate/format JSON by piping to python -m json.tool

Use Ctrl+R to fuzzy search bash history

mkdir -p creates intermediate directories