How to add git branch name to Linux bash prompt

git_branch() { git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/(\1)/' }

PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\033[0;32m$(__git_ps1 " (%s)")\033[0m\$ ' # --AND-- PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w$(__git_ps1 " (%s)")\$ '

Thank you so much! Your video help me a lot.

thanks