恢复Debian下root用户bash高亮显示

实际上只需要将ls等命令的--colore选项打开即可， 而这些都已存在，只需将~/.bashrc中的注释恢复即可

# ~/.bashrc: executed by bash(1) for non-login shells.

export PS1='\h:\w\$ '

umask 022

# You may uncomment the following lines if you want `ls' to be colorized:

export LS_OPTIONS='--color=auto'

eval "`dircolors`"

alias ls='ls $LS_OPTIONS'

alias ll='ls $LS_OPTIONS -l'

alias l='ls $LS_OPTIONS -lA'

# Some more alias to avoid making mistakes:

alias rm='rm -i'

alias cp='cp -i'

alias mv='mv -i'

alias vi='vim'