修改PS1变量

PS1='\[\e[7;46m\]\u\[\e[0m\]@\[\e[0;32m\]\h\[\e[0m\]:\[\e[0;34m\]\w\[\e[0m\]\$ '
新的比较好的变量：

PS1='\[\e[7;36m\]\u\[\e[0m\]@\[\e[0;32m\]\h\[\e[0m\]:\[\e[0;34m\]\W\[\e[0m\]\$ '

 

ref from:

http://professor.blog.51cto.com/996189/1572141

http://www.cnblogs.com/jsfans/p/3844779.html