Pre-commit hook to check for NSLog statements in iOS repos

pre-commit

#!/bin/sh
# name this .git/hooks/pre-commit
# chmod +x .git/hooks/pre-commit
# enjoy
 
# so it will work on empty repos
if git-rev-parse --verify HEAD >/dev/null 2>&1; then
    against=HEAD
else
    against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi
 
for FILE in `git diff-index --name-status $against -- | cut -c3-` ; do
    if [ `grep 'NSLog' $FILE` ]
    then
        echo $FILE ' has an NSLog in it on line' `grep -n NSLog $FILE | head -n1 | cut -d: -f1`
        echo "Use git commit --no-verify to ignore this"
        exit 1
    fi  
done
exit 

There is no such command git-rev-parse, it should be git rev-parse.

My mac book pro: if [grep 'NSLog' $FILE] change to if [[grep 'NSLog' $FILE]]