LS_COLOR 的參數意義

	其實我們可以改變 BASH 中的 LS_COLORS 環境變數，這樣無論使用什麼軟體也會有相同顯示效果。</p>
	首先，登入後修改 ~/.bashrc 檔，加入或修改 ls, LS_COLOR 變數，如下:
	LS_COLORS='di=1:fi=0:ln=31:pi=5:so=5:bd=5:cd=5:or=31:mi=0:ex=35:*.rpm=90'<br />
	export LS_COLORS
	LS_COLORS 參數有:
	di = directory
	fi = file
	ln = symbolic link
	pi = fifo file
	so = socket file
	bd = block (buffered) special file
	cd = character (unbuffered) special file
	or = symbolic link pointing to a non-existent file (orphan)
	mi = non-existent file pointed to by a symbolic link (visible when you type ls -l)
	ex = file which is executable (ie. has 'x' set in permissions)
	顏色方面，代碼如下:
	0 = default colour
	1 = bold
	4 = underlined
	5 = flashing text
	7 = reverse field
	31 = red
	32 = green
	33 = orange
	34 = blue
	35 = purple
	36 = cyan
	37 = grey
	40 = black background
	41 = red background
	42 = green background
	43 = orange background
	44 = blue background
	45 = purple background
	46 = cyan background
	47 = grey background
	90 = dark grey
	91 = light red
	92 = light green
	93 = yellow
	94 = light blue
	95 = light purple
	96 = turquoise
	100 = dark grey background
	101 = light red background
	102 = light green background
	103 = yellow background
	104 = light blue background
	105 = light purple background
	106 = turquoise background
	http://linux-sxs.org/housekeeping/lscolors.html
	http://linux.about.com/od/bgb_guide/a/gdebgb29t00.htm