S3 Backup locally script (use absolute paths for files)

crontab -e

0 21 * * * s3backup.sh >> crontab.out 2> crontab.err &
0 5 * * * s3stopbackup.sh  >> crontab.out 2> crontab.err &

s3backup.sh

 #!/bin/sh
export PATH=/opt/bin:/opt/sbin:/usr/bin/:/usr/local/bin:$PATH
if (ps -A | grep aws | grep -v grep)
then
	echo "s3backup.sh: `date +%Y%m%d-%H%M` - Backup already in progress" >> aws-sync.log
	exit
fi
echo "s3backup.sh: `date +%Y%m%d-%H%M` - Backup started" >> aws-sync.log
aws s3 sync s3://<my-bucket> <local-backup-path> >> aws-sync.log
echo "s3backup.sh: `date +%Y%m%d-%H%M` - Backup completed" >> aws-sync.log

s3stopbackup.sh

#!/bin/sh
if (ps -A | grep aws | grep -v grep)
then
	kill `ps -A | grep s3backup.sh | grep -v grep | awk '{print $1}'`
	echo "s3stopbackup.sh: `date +%Y%m%d-%H%M` - s3backup.sh killed" >> aws-sync.log
	kill `ps -A | grep aws | grep -v grep | awk '{print $1}'`
	echo "s3stopbackup.sh: `date +%Y%m%d-%H%M` - aws killed" >> aws-sync.log
else
	echo "s3stopbackup.sh: `date +%Y%m%d-%H%M` - aws not running"  >> aws-sync.log
fi