ankyhe

Setup Environmnet variables for Hadoop.

export HADOOP_VERSION=2.8.5
export HADOOP_HOME=${HOME}/hadoop-$HADOOP_VERSION
export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop
export PATH=${HADOOP_HOME}/bin:$PATH

Download Hadoop files.

ankyhe

Zsh only.  
TIMEFMT='%J   %U  user %S system %P cpu %*E total'$'\n'\
'avg shared (code):         %X KB'$'\n'\
'avg unshared (data/stack): %D KB'$'\n'\
'total (sum):               %K KB'$'\n'\
'max memory:                %M MB'$'\n'\
'page faults from disk:     %F'$'\n'\
'other page faults:         %R'

time ls

ankyhe

-- Diffmerge as Diff in OSX --
1. Download diffmerge (https://sourcegear.com/diffmerge/), I suggest donwload dmg file
2. Copy diffmerge/extra/diffmerge into /usr/local/bin
3. sudo vim /usr/local/bin/dmdiff, which content is as below:
    #!/bin/sh
    /usr/local/bin/diffmerge "$2" "$5" >& /dev/null
4. vim ~/.gitconfig:
  [diff] 
    external = dmdiff
    tool = diffmerge