Simple git pre-commit hook for detecting a do-not-commit token (e.g. "NOSHARE").

pre-commit

#!/bin/sh

git diff-index --cached --quiet HEAD
_ANY=$?

if ((0 == $_ANY)); then
    exit 0
fi

_TOKEN_FOUND=`git diff --cached --name-only | xargs -L1 -I{} sh -c "echo {}; git diff --cached {} | grep -v '^-' | grep -H NOSHARE"`
#_TOKEN_COUNT=`echo -n "$_TOKEN_FOUND" | wc -l`

if [ "" == "$_TOKEN_FOUND" ]; then
    echo "Commit clean, proceeding..."
    exit 0
else
    echo "$_TOKEN_FOUND"
    echo '"NOSHARE" found, aborting commit...'
    exit 1
fi