## Parses out the branch name from .git/HEAD:
find_git_branch () {
local dir=. head
until [ "$dir" -ef / ]; do
if [ -f "$dir/.git/HEAD" ]; then
head=$(< "$dir/.git/HEAD")
if [[ $head = ref:\ refs/heads/* ]]; then
git_branch="[→ ${head#*/*/}]"
elif [[ $head != ‘‘ ]]; then
git_branch="[→ (detached)]"
else
git_branch="[→ (unknow)]"
fi
return
fi
dir="../$dir"
done
git_branch=‘‘
}
# git目录显示当前分支
PROMPT_COMMAND="find_git_branch; $PROMPT_COMMAND"
# Here is bash color codes you can use
black=$‘\[\e[1;30m\]‘
red=$‘\[\e[1;31m\]‘
green=$‘\[\e[1;32m\]‘
yellow=$‘\[\e[1;33m\]‘
blue=$‘\[\e[1;34m\]‘
magenta=$‘\[\e[1;35m\]‘
cyan=$‘\[\e[1;36m\]‘
white=$‘\[\e[1;37m\]‘
normal=$‘\[\e[m\]‘
PS1="$magenta\u$white@$green\h$white:$cyan\w$yellow\$git_branch$white$red\$ $normal"
用法：把上述代码追加到~/.bashrc文件后面，source ~/.bashrc后打开新终端就可以看到效果了
