Set netns name and git branch name in bash-PS1

bashrc_ext

parse_git_branch() {
         git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ (\1)/'
}
netns_name() {
    str=`ip netns identify $$`
    [[ "$str" != "" ]] && echo "\033[1;35m[$str]\033[0m " && return
}
export PS1="$(netns_name)\u@\h:\[\033[32m\]\w\[\033[33m\]\$(parse_git_branch)\[\033[00m\]\$ "