Git hook to run pod install automatically upon checkout if Podfile change comparing to the last commit

post-checkout.sh

# Existent podfile
current_directory="${PWD}"
current_podfile_path="$current_directory/Podfile"
current_directory_md5=`md5  -q -s  "$current_directory"`

temporary_podfile_path="/tmp/${current_directory_md5}.podfile"
echo "Comparing Podfiles\nOld: $current_podfile_path\nNew: $temporary_podfile_path"

# Comparing it to the new Podfile
comparison_result=`comm -1 -3 -i $current_podfile_path $temporary_podfile_path`
if [ comparison_result == "" ]; then
	echo "No changes in Podfile detected"
else
	echo "Podfile changed"
	cd code
	pod install
fi

# Copy the current Podfile to the temporary directory
cp -f "$current_podfile_path" $temporary_podfile_path