Switch bashrc settings for Cygwin or MinGW via http://qiita.com/items/cda2d7265f0809796118

.bashrc

sysname=`uname -s | sed -e "s/\([a-zA-Z]\+\).*/\1/"`
if [ "$sysname" = "CYGWIN" ]; then
	LANG=ja_JP.UTF-8
elif [ "$sysname" = "MINGW" ]; then
	LANG=ja_JP.sjis
	JLESSCHARSET="japanese-sjis"
	OUTPUT_CHARSET=sjis
fi

whereami

#!/usr/bin/bash
# Simulate 'uname -o'
# @author noromanba
# @license Public Domain https://creativecommons.org/licenses/publicdomain/
sysname=`uname -s | sed -e "s/\([a-zA-Z]\+\).*/\1/"`
echo $sysname