function parse_git_branch () {
git branch 2> /dev/null | sed -e ‘/^[^*]/d’ -e ‘s/* \(.*\)/ (\1)/’
}
RED=”\[33[0;31m\]”
YELLOW=”\[33[0;33m\]”
GREEN=”\[33[0;32m\]”
NO_COLOR=”\[33[0m\]”
PS1=”\h$NO_COLOR:\w$YELLOW\$(parse_git_branch)$NO_COLOR\$ ”
if you are Mac user paste the above code in .profile file of the current user of your system home directory
if you are Linux user the paste it in the .bashrc file of the current user of your system home directory