Simple website backup script

I have used variation of this backup script for quick backups of typical LAMP stack websites (e.g. based on Drupal or WordPress). This saves the database along with the files into an archive…

 #!/bin/bash

# Check number of arguments
if [ $# -ne 5 ]; then
    echo "Wrong number of arguments provided. Run as:"
    echo "$0 dbhost dbname dbuser dbpass webroot"
    exit 1
fi

# Set arguments as more readable variable names
dbhost=$1
dbname=$2
dbuser=$3
dbpass=$4
webroot=$5

# Print argument values
echo "DB host: ${dbhost}"
echo "DB name: ${dbname}"
echo "DB user: ${dbuser}"
echo "DB pass: ${dbpass}"
echo "Webroot: ${webroot}"
sleep 3

# Assign a backup ID for this run
backup_id=$dbname-$(date +'%Y-%m-%d-%H-%M-%S')

# Prepare the temp directory
echo "Preparing temp directory"
sleep 3
tempdir=/tmp/$backup_id
mkdir -p $tempdir/webroot
if [ $? != 0 ]; then
  echo "Could not make directory ${tempdir}/webroot. Exiting";
  exit 1
fi
echo "Temp directory: ${tempdir}"

# Dump the web DB to an SQL file
echo "Backing up database to ${tempdir}/${dbname}.sql"
sleep 3
cd $tempdir
mysqldump --password=$dbpass --user=$dbuser --host=$dbhost --add-drop-table $dbname > $dbname.sql
if [ $? != 0 ]; then
  echo "Could create ${tempdir}${dbname}.sql. Exiting";
  exit 1
fi
echo "DB backup file: ${tempdir}${dbname}.sql"

# Copy web files to temp directory
echo "Copying files from ${webroot} to ${tempdir}/webroot"
sleep 3
cp -fvrT $webroot $tempdir/webroot
if [ $? != 0 ]; then
  echo "Could not copy all files. Exiting";
  exit 1
fi

# Archive/compress tarball
echo "Packaging /tmp/${backup_id} to /tmp/${backup_id}.tar.gz "
sleep 3
cd /tmp
tar czvf $backup_id.tar.gz $backup_id
if [ $? != 0 ]; then
  echo "Could not copy all files. Exiting";
  exit 1
fi

# Clean up temp files and let user know where to find the backup file
echo "Removing temp directory $tempdir"
rm -vr $tempdir
echo "Backup file: /tmp/${backup_id}.tar.gz"

Depending on the website, there may be various non-web-accessible (private) directories to include in the script as well. Once the script is modified for a particular website, it can be put in a cron job and modified to copy the archive to a backup server.