backup-workshop.sh

#! /usr/bin/env bash
# ask user for what to back up
read -p "Please enter the directory or file you wish to backup: " src
# compress and package
tar -czvf "$src-backup.tar.gz" "$src"
bak="$src-backup.tar.gz"
# ask where we're storing our backup
read -p "Enter directory or server where you want to store your backup: " dst
# check for remote destination
if echo "$dst" | grep -qe "(.*@.*\..*)" | grep -qe "^:$"; then dst+=':'; fi
# hash our backup
check=$(shasum -a 512 $src | cut -d ' ' -f 1)
# log our hash
echo "$src sha512 on `date +"on %d/%m/%Y at %H:%M:%S"`: $check" >> .backup.log
# backup
rsync -ve ssh --progress $bak $dst 2>>.backup.log
# error check
if [ $? -ne 0]; then
    echo -e "\nThere was an error.\nCheck `pwd`.backup.log"
else
    echo "\nBackup completed successfully"
    rm "$bak"
fi