Git hook for logging branch checkouts

post-checkout.sh

# Instructions
# ========================================================================
# 1. Copy this file to .git/hooks/post-checkout (remove the .sh extension)
#
# 2. Set the destination for the logs, e.g.
#      - export CHECKOUT_LOG='~/checkout.log'
#      - also add it as a Windows environment variable with the full filepath
#
# 3. Watch the logs update every time you checkout a branch with
#      tail -f $CHECKOUT_LOG
#
# 4. Example output:
#      1581465462 my-repo branch-name -- Checked out on Wed, Feb 12, 2020 10:57:42 AM

echo `date +%s;
      basename \`pwd\`;
      git branch --show-current;
      echo ' -- Checked out on';
      date` \
      >> "$CHECKOUT_LOG"