pre commit hook for running pylint

pre-commit

#!/bin/sh

DESIRED_VENV=compass

if [ -z $VIRTUAL_ENV ] || [ "`basename $VIRTUAL_ENV`" != "$DESIRED_VENV" ]; then
    echo You\'re not in the $DESIRED_VENV virtualenv, \`workon $DESIRED_VENV\` to fix.
    exit 1
fi

RCFILE="`git rev-parse --show-toplevel`"/.pylintrc
[ -e "$RCFILE" ] || echo "Cannot find $RCFILE"

FILES=`git diff-index --cached HEAD | awk '{ printf $6" " }'`
if [ -z "$FILES" ]; then
    echo "Nothing to commit"
    exit 1
fi

COMMAND="pylint --rcfile='$RCFILE' $FILES"
OUTPUT="`$COMMAND 2>&1`"
echo $COMMAND
echo "$OUTPUT"
echo "$OUTPUT" | awk '/^E:/ { exit 1 }'