backup-folder-to-S3-server-side-encrypted.sh

#!/bin/bash

set -e

SOURCE_DIR="the-dir-to-save"
S3_BUCKET="s3://your-s3-bucket/with/path"

TIMENOW="$(date --rfc-3339=seconds | tr ' ' '_' | tr ':' '-' | tr '+' '.')"
FILENAME="$SOURCE_DIR.$TIMENOW.tgz"

DEST_TAR="/tmp/$FILENAME"

# Assumes the SOURCE_DIR is in your $HOME
tar -cvzf "$DEST_TAR" -C "$HOME" "$SOURCE_DIR"

aws s3 cp "$DEST_TAR" "$S3_BUCKET$FILENAME" --storage-class STANDARD_IA --sse

# Schedule the above to run with cron periodically
# Once a day at 20:00
# crontab -e
# 0 20 * * * /home/username/path-to-the-script-above/./script.sh > /tmp/crontab.backup-source-dir.log 2>&1