An example backup script for Minecraft servers on Linux. Requires the zip utility.

backup.sh

#!/bin/bash

# Announce server backup in console
echo "Started server backup..."

# Get current date and create name variable
printf -v date '%(%m-%d-%Y)T'
export name="Server $date Backup.zip"

# Zip all files
echo "Zipping files..."
zip -r "$NAME" $PWD/*

# Test if backup folder exists. If it does, move the newly made backup to it.
# If it doesn't, create it then move the backup to it.
echo "Checking for backup directory..."
export DIR="$PWD/backups"
if [ -d "backups" ]; then
  mv "$NAME" backups/
else
  echo "Backups directory does not exist. Creating folder and moving file..."
  mkdir -p backups
  mv "$NAME" backups/
fi

echo "Backup completed! File located at \"$DIR/$NAME\"."