OS X 默认终端默认白底黑字，看起来不大舒服，于是想换下字体颜色，按照文件类型来显示不同的颜色：
在 ~ 先建立一个文件 ~/.bash_profile
加入下面的两行：
export CLICOLOR=1
export LSCOLORS=gxfxaxdxcxegedabagacad
存盘， 退出Terminal, 重起Terminal.
更改LSCOLORS可以有不同的颜色效果。
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如果你用的是 csh/tcsh (提示符是 %), 建立 ~/.cshrc 加入
setenv CLICOLOR 1
setenv LSCOLORS gxfxaxdxcxegedabagacad
存盘， 执行 source ~/.cshrc
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LSCOLORS 的含义：
LSCOLORS The value of this variable describes what color to use
for which attribute when colors are enabled with
CLICOLOR. This string is a concatenation of pairs of the
format fb, where f is the foreground color and b is the
background color.
The color designators are as follows:
a black
b red
c green
d brown
e blue
f magenta
g cyan
h light grey
A bold black, usually shows up as dark grey
B bold red
C bold green
D bold brown, usually shows up as yellow
E bold blue
F bold magenta
G bold cyan
H bold light grey; looks like bright white
x default foreground or background
Note that the above are standard ANSI colors. The actual
display may differ depending on the color capabilities of
the terminal in use.
The order of the attributes are as follows:
1. directory
2. symbolic link
3. socket
4. pipe
5. executable
6. block special
7. character special
8. executable with setuid bit set
9. executable with setgid bit set
10. directory writable to others, with sticky bit
11. directory writable to others, without sticky
bit
The default is “exfxcxdxbxegedabagacad”, i.e. blue fore-
ground and default background for regular directories,
black foreground and red background for setuid executa-
bles, etc.