Script to do an incremental backup of the home directory of a user

home-backup.sh

#! /bin/sh

DRIVE_PATH="/path/to/drive"
USER="joe"
BACKUP_PATH="$DRIVE_PATH/backups/$USER@$(hostname)"

if command -v rdiff-backup >/dev/null 2>&1; then
  echo "Checking drive..."

  if ! [ -d "$DRIVE_PATH" ]; then
    echo "Backup drive not mounted"
    exit 1
  fi

  echo "About to create home folder backup for $USER@$(hostname)..."
  
  if ! [ -d "$BACKUP_PATH" ]; then
    echo "Creating backup destination folder..."
    mkdir -p $BACKUP_PATH
  fi

  if rdiff-backup /home/$USER $BACKUP_PATH >/dev/null 2>&1; then
    echo "Done"
  else
    echo "An error occurred with rdiff-backup"
    exit 1
  fi
else
  echo "rdiff-backup is not installed, it is required"
  exit 1
fi