gistfile1.sh

#!/bin/env bash
TMPFILE=/tmp/`hostname`.databases.`date '+%Y-%m-%d'`.sql
TMPGZFILE=$TMPFILE.gz
mysqldump -u root --password='PASSWORD' \
    --all-databases --add-drop-database \
    > $TMPFILE
gzip $TMPFILE  #This will make a file with the $TMPGZFILE filename.
s3cmd put $TMPGZFILE s3://YOURBUCKET/
rm -f $TMPFILE $TMPGZFILE