实现在bash命令行直接显示git的分支

在 ~/.bashrc 中添加

操作系统为：CentOS Linux release 7.2.1511 (Core)

bash
vim  ~/.bashrc
## 添加
# Source global definitions
if [ -f /etc/bashrc ]; then
        . /etc/bashrc
fi

function git_branch {
   branch="`git branch 2>/dev/null | grep "^\*" | sed -e "s/^\*\ //"`"
   if [ "${branch}" != "" ];then
       if [ "${branch}" = "(no branch)" ];then
           branch="(`git rev-parse --short HEAD`...)"
       fi
       echo " ($branch)"
   fi
}

export PS1='\u@\h \[\033[01;36m\]\W\[\033[01;32m\]$(git_branch)\[\033[00m\] \$ '

## 刷新bash
source ~/.bashrc