Automatic git bash prompt setup for MacOS

git-prompt-setup.sh

#!/bin/bash

#=======================================
# git-prompt-setup.sh
#
# Adds git branch to your bash prompt.
#=======================================

GITPROMPT_DIR=~/.bin
GITPROMPT_FILE=git-prompt.sh
GITPROMPT_URL=https://raw.githubusercontent.com/git/git/master/contrib/completion/git-prompt.sh
BASH_PROFILE_FILE=~/.bash_profile

# Fetch and save the git-prompt shell script
mkdir -p $GITPROMPT_DIR
curl -o $GITPROMPT_DIR/$GITPROMPT_FILE $GITPROMPT_URL

# Write the new prompt to bash profile
cat > $BASH_PROFILE_FILE <<- EOM
#### Git Prompt ####
PS1='\h:\W \u$(__git_ps1 "(%s)")\$'
EOM

# Update the prompt:
source ~/.bash_profile

echo "Your prompt has been updated. To modify the prompt, edit the PS1 variable in ~/.bash_profile"

Description:

Automatically modifies your bash prompt to include the current git branch of your current working directory.

• Creates the ~/.bin directory (if it doesn't exist already)
• Downloads Git's git-prompt.sh script, and places it in ~/.bin
• Modifies the bash prompt (PS1) in .bash_profile

When inside a git repository, the format of the prompt will be user@host:directory(branch)$. When not in a git repo, the prompt will be user@host:directory$

Usage:

$ ./git-prompt-setup.sh

NOTE: this script could easily be modified to work for bash on any OS just by changing the "BASH_PROFILE_FILE" variable.