ubuntu12.04 恢复终端下命令TAB键补齐

操作系统：ubuntu12.04

问题：终端下输入命令，TAB键补齐功能失效

解决方法：修改~/.bashrc，打开“programmable completion”功能，如下：

 # Alias definitions.                                                                         
 # You may want to put all your additions into a separate file like                           
 # ~/.bash_aliases, instead of adding them here directly.                                     
 # See /usr/share/doc/bash-doc/examples in the bash-doc package.                              
 
 if [ -f ~/.bash_aliases ]; then
     . ~/.bash_aliases
 fi
 
 # enable programmable completion features (you don't need to enable                          
 # this, if it's already enabled in /etc/bash.bashrc and /etc/profile                         
 # sources /etc/bash.bashrc).                                                                 
 if [ -f /etc/bash_completion ] && ! shopt -oq posix; then
    . /etc/bash_completion
 fi
 
 export PATH=/usr/local/arm/4.3.2/bin/:$PATH
 export PATH=/opt/skyeye/bin:$PATH

执行“source ~/.bashrc"，使修改生效。