Backs up full filesystem to an xz-compressed tarball.

backup-full.sh

#!/bin/bash
XZ_OPT=-9
DATE=$(date +'%Y%m%d')
FILENAME="/"`hostname -f`"-$DATE.tar.xz"

printf "FULL FILESYSTEM BACKUP SCRIPT\n"
printf '==============================='
printf "\n"
printf "Current date: %s\n" "$DATE"
printf "Archive will be stored at: %s\n" "$FILENAME"

tar -cvpJf $FILENAME --exclude=$FILENAME \
        --exclude=/var/swapfile \
        --exclude=/dev/* \
        --exclude=/media/* \
        --exclude=/mnt/* \
        --exclude=/proc/* \
        --exclude=/sys/* \
        --exclude=/tmp/* \
        --exclude=/etc/fstab \
        --exclude=/var/run/* \
        --exclude=/var/lock/* \
        --exclude=/lib/modules/*/volatile/.mounted \
        --exclude=/var/cache/apt/archives/* \
        --exclude=/usr/lib/jvm/* \
        --one-file-system /

FILESIZE=$(stat -c %s $FILENAME 2>/dev/null)
if [[ $FILESIZE > 0 ]]; then
        MD5SUM=$(md5sum $FILENAME)
        SHA1SUM=$(sha1sum $FILENAME)
        printf "Backup completed.\n"
        du -h $FILENAME
        printf "MD5 hash: %s\n" "$MD5SUM"
        printf "SHA1 hash: %s\n" "$SHA1SUM"
else
        printf "Backup may not have completed successfully.\n"
fi