I tried to find the best solution (simple, secure, incremental, reliable...) and could not find the perfect candidate either. I finally ended up by sending enc

I tried to find the best solution (simple, secure, incremental, reliable...) and could not find the perfect candidate either. I finally ended up by sending encrypted gpg tar files to a remote backup machine (you may want to cross-backup machines) (without using any intermediate file) (sorry if formatting breaks) #!/bin/bash # # list of local directories to be backuped DIRS="/home /media" # destination directory target DEST="/data/backups" # gpg encryption email GPGEMAIL="homer@example.com" # remote ssh as user@pachine REMOTESSH="homer@backup.example.com." # remote ssh additional args REMOTESSHARGS="-i /root/.ssh/id_backup" for i in ${DIRS} ; do if test -d "$i" ; then f=${DEST}/$(echo $i | tr '/' '_' | sed -e 's/^_//').tgz.gpg tmp=${DEST}/_tmp echo "backuping $i to remote $f encrypted with pgp" >&2 /bin/tar cf - ${i} \ | /usr/bin/gpg --quiet --batch --encrypt --compress-algo zlib --recipient ${GPGEMAIL} -o - \ | /usr/bin/ssh -p ${REMOTESSHARGS} -o BatchMode=yes -o Compression=no ${REMOTESSH} \ "cat > $tmp && mv $tmp ${f}" else echo "error: $d does not exist" >&2 fi done