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· barnabyalter

Ever wanted to checkout only a single directory or file from a Git repos? Well with some footwork you can as of Git 1.9. Read the documentation for more implementation details and to understand what's going on: https://git-scm.com/docs/git-read-tree.

But here is a quick implementation with bash.

The following will checkout one directory, errors, into a new git directory and subsequently update it (note fast-forward-only merge):

#!/bin/bash

DIR="/apps/errors"
REPOS="git@github.com:username/repository.git"
BRANCH="gh-pages"
CHECKOUT_DIR="errors/"

mkdir -p $DIR
if [ -d "$DIR" ]; then
 cd $DIR
 git init
 git remote add -f origin $REPOS
 git fetch --all
 git config core.sparseCheckout true
 if [ -f .git/info/sparse-checkout]; then
 rm .git/info/sparse-checkout
 fi
 echo $CHECKOUT_DIR >> .git/info/sparse-checkout
 git checkout $BRANCH
 git merge --ff-only origin/$BRANCH
fi

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