keep multiple snapshots so that you can recover files after you delete them yourself. #!/bin/sh AWS_ACCESS_KEY_ID=<> AWS_SECRET_ACCESS_KEY=<> BUCKET=<> DIR

keep multiple snapshots so that you can recover files after you delete them yourself. #!/bin/sh AWS_ACCESS_KEY_ID=<> AWS_SECRET_ACCESS_KEY=<> BUCKET=<> DIR=<> S3SYNC=/usr/bin/s3sync.rb DAYS_TO_KEEP_BACKUPS=30 # colons in path confuse s3sync DATE=$(date +%F_%H-%M-%S) NEWEST=$(/bin/ls -r $DIR | grep -v current | head -1) # copy the newest copy of files into a new directory, creating hardlinks instead of duplicate files cp -al $DIR/$NEWEST/ $DIR/$DATE/ # sync the s3 bucket against the new directory $S3SYNC --recursive --make-dirs --delete --no-md5 -v $BUCKET: $DIR/$DATE/ 2>&1 | grep -v 'Could not change owner' # update the "current" symlink link test -e $DIR/current && rm $DIR/current ln -sf $DIR/$DATE $DIR/current # remove snapshots older than DAYS_TO_KEEP_BACKUPS days find $DIR -maxdepth 1 -type d -mtime +$DAYS_TO_KEEP_BACKUPS -print0 | xargs -0 --no-run-if-empty rm -rv