Display Git Branch Name in Bash

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$ git clone https://github.com/KipJiang/git-aware-prompt.git ~/git-aware-prompt
$ mv ~/git-aware-prompt ~/.git-aware-prompt

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$ vim ~/.bashrc

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# source .git-aware-prompt
export PS1="\${debian_chroot:+(\$debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\] \[$txtcyn\]\$git_branch\[$txtred\]\$git_dirty\[$txtrst\]\$ "
export GITAWAREPROMPT=~/.git-aware-prompt
source "${GITAWAREPROMPT}/main.sh"

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$ source ~/.bashrc

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# git branch function
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)\[\033[00m\] \$ '

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$ source ~/.bashrc

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# git branch function
parse_git_branch() {
     git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/ *\(.*\)/(\1)/'
}
export PS1="\u@\h:\[\033[32m\]\w\[\033[33m\]\$(parse_git_branch)\[\033[00m\] $ "

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$ source ~/.profile