git precommit hook for rspec

gistfile1.sh

#!/usr/bin/env bash

# Add this file to .git/hooks/pre-commit
# and make it executable.

# 1. greps the repo for "focus: true"
# 2. counts number of results
# 3. Strips the whitespace from the resulting number string

num=$(git grep "focus: true" | wc -l | xargs)

# 4. assumes that spec_helper has the string for
# turning on that configuration, so the hook will abort
# commit only if there are more than 1 mentions of "focus: true"

if [[ "$num" -gt 1 ]]; then
  echo "git commit error: Remove all 'focus: true' directives from spec suite"
  exit 1
fi