OSSEC quick install script

ossec-install.sh

#!/bin/bash
#
# Written by mig5 2014

# Variables
VERSION=2.8.2
CHECKSUM="ossec-hids-${VERSION}-checksum.txt"
TARBALL="ossec-hids-${VERSION}.tar.gz"

echo "Downloading packages and checksums"
curl -o ${TARBALL} http://www.ossec.net/files/${TARBALL}
curl -o ${CHECKSUM} http://www.ossec.net/files/${CHECKSUM}

echo "These are the checksums from the file"
cat $CHECKSUM
OSSEC_MD5=$(md5sum $TARBALL | awk {'print $1'})
OSSEC_SHA=$(sha1sum $TARBALL | awk {'print $1'})

echo "checking for matching md5/sha sums"
grep $OSSEC_MD5 $CHECKSUM
if [ $? -eq 1 ]; then
  echo "md5sum didn't match"!
  exit 1
fi

grep $OSSEC_SHA $CHECKSUM
if [ $? -eq 1 ]; then
  echo "sha1sum didn't match"!
  exit 1
fi

# sums matched, extract and run install
tar zxfv $TARBALL
builtin cd ossec-hids-${VERSION}
sudo bash install.sh