hacst

RS="\033[0m"    # reset
HC="\033[1m"    # hicolor
INV="\033[7m"   # inverse background and foreground

function git_dirty() {
  if [[ $(git diff --shortstat 2> /dev/null | tail -n1) != "" ]]; then
     echo -n "\[$INV\]*"
  else
     echo -n "\[$HC\]"
  fi

zdennis

#
# PLACE THE CONTENTS IN YOUR ~/.bashrc
# AFTERWARDS YOU'LL NEED TO RELOAD IT:   source ~/.bashrc
#

# Colors
BLACK='\[\e[0;30m\]'
BLUE='\[\e[0;34m\]'
GREEN='\[\e[0;32m\]'
CYAN='\[\e[0;36m\]'

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD