Backup Scripts for Linux

Sending out a couple of scripts for backing up entire disks and files for Linux. We are currently backing up to a ZFS Appliance share since we don’t have enough ports for a backup network. Each of these scripts will do a count of existing backup files and remove anything older.

dd_backup.sh

#/bin/bash
source="sda"
dest="/zfssa/os_backup"
backup="`uname -n |awk -F. '{print $1}'`_bootdisk_backup.latest"
archive="`uname -n |awk -F. '{print $1}'`_bootdisk_backup"
if [ -f $dest/$backup ];then
        cd $dest
        ls -t $dest/$backup*-* | tail -n +1 | xargs -d '\n' rm
        mv $dest/$backup $dest/"$archive""_"`date +%m%d%y%M%H`
        dd if=/dev/$source of=$dest/$backup conv=sync,noerror &
else
        dd if=/dev/$source of=$dest/$backup conv=sync,noerror &
fi

file_backup.sh

#!/bin/bash
####################################
#
# Backup to NFS mount script.
#
####################################
hostname=$(hostname -s)
backup_files="/u01 /opt /home/oracle /home/grid /etc"
dest="/zfssa/os_backup/file_backup"
count=$(ls $dest/$backup/$hostname* |wc -l)

if [[ "$count" -gt 2 ]]; then
        ls -t $dest/$hostname* | tail -n +3 | xargs -d '\n' rm

# Create archive filename.
day=$(date +%A)
hostname=$(hostname -s)
archive_file="$hostname-$day.tgz"

echo "Backing up $backup_files to $dest/$archive_file"
        date
echo

# Backup the files using tar.
        tar czf $dest/$archive_file $backup_files

# Print end status message.
echo
echo "Backup finished"
        date
else
        # Create archive filename.
day=$(date +%A)
hostname=$(hostname -s)
archive_file="$hostname-$day.tgz"

echo "Backing up $backup_files to $dest/$archive_file"
        date
echo

# Backup the files using tar.
        tar czf $dest/$archive_file $backup_files

# Print end status message.
echo
echo "Backup finished"
        date
fi

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