Set the bash prompt, terminal tab and window names on OS X. Based on this https://gist.github.com/henrik/31631 with additional comments and using PROMPT_COMMAND instead of directly setting PS1. Add to your .bashrc file. Format of prompt is "last_part_of_directory_path $" - If not in git managed directory "last_part_of_directory_path [branch_name…

.bashrc

# Set the bash prompt, terminal tab and window names on OS X.                                                     
#                                                                                                                 
# Return * if changes, nothing otherwise.                                                                         
# You could add "--untracked-files=no" to the git status command if you                                           
# don't want untracked files to mark the directory as dirty.                                                      
function parse_git_dirty {
    [[ $(git status 2> /dev/null | tail -n1) != "nothing to commit (working directory clean)" ]] && echo "*"
}
# Return branch name with dirty flag (* after name if dirty) or nothing if not in git directory.                  
# First sed expression matches line starting with *. Second sed expression extracts the rest of                   
# the line as the branch name.                                                                                    
function parse_git_branch {
    git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/[\1$(parse_git_dirty)]/"
}
# Set the prompt, tab and window names.                                                                           
function set_prompt {
    # Terminal tab name.                                                                                          
    last_part_of_path=${PWD##*/};
    printf "\e]1;${last_part_of_path}\a";
    # Terminal window name.                                                                                       
    hostname=`hostname`
    printf "\e]2;${hostname}\a";# Prompt character                                                                                                        
    # Emoji. Find the hex for the character you're interested in by using the character viewer,                               
    # right clicking on the character and choosing "Copy Character Info". Pasting into a text                                 
    # doc will show you the hex code. I'm adding an extra space to the end to allow enough
    # space for the prompt.
    prompt_char=$'\xF0\x9F\x8D\x99 '                                                                                         
    # Simple dollar sign.                                                                                                     
    #prompt_char='$'                                                                                                          
    # Command prompt set by setting PS1.                                                                                      
    export PS1='\[\033[1;33m\]${last_part_of_path}\[\033[0m\] \[\033[1;35m\]$(parse_git_branch)\[\033[0m\]${prompt_char} '
}
# Before displaying prompt execute this command.                                                                  
export PROMPT_COMMAND=set_prompt