Add Git Branch Name to the Terminal Prompt

TerminalBranchName.sh

sudo nano ~/.bash_profile

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

# If you are using an existing Terminal session, don’t forget to make the changes take effect by sourcing the file with the command 
source ~/.bash_profile