Install git-completion & git prompt (for bash)

git-prompt-install.sh

#!/bin/bash

#
# git-completion & git-prompt を導入するスクリプト（for bash)
# git, curl, unzip を事前にインストールしておくこと
#

set -eux
set -o pipefail

TEMPDIR=$(mktemp -d)
cd $TEMPDIR
curl -LsS https://github.com/git/git/archive/master.zip -o git-master.zip
unzip git-master.zip
cp git-master/contrib/completion/git-completion.bash $HOME/.git-completion.bash
cp git-master/contrib/completion/git-prompt.sh $HOME/.git-prompt.sh

cd $HOME
chmod +x .git-completion.bash
chmod +x .git-prompt.sh

cat << 'EOT' >> $HOME/.bashrc

source $HOME/.git-completion.bash
source $HOME/.git-prompt.sh
GIT_PS1_SHOWDIRTYSTATE=1
GIT_PS1_SHOWUPSTREAM=1
GIT_PS1_SHOWUNTRACKEDFILES=1
GIT_PS1_SHOWSTASHSTATE=1

export PS1='\[\033[1;32m\]\u\[\033[00m\]:\[\033[1;34m\]\w\[\033[1;31m\]$(__git_ps1)\[\033[00m\]\n\$ '
EOT

if [ -d "$TEMPDIR" ]; then
    rm -r "$TEMPDIR"
fi