Laba,
pakritikuokit idėją:
RSYNC'inis sistemos backupas per SSH, galimas per N host'ų, leidžiamas 
per CRON'ą

Blogai tai, kad juzerių SSH raktus reikia laikyt be passwd.

#!/bin/sh

# save site settings to remote hosts

declare -a REMOTE=(site1.tld site2.tld site3.tld ... siteN.tld)
declare -a RUSERS=(user1 user2 user3 ... userN)
declare -a DIRS=(/etc/ /var/log/ /var/backups/)

PKEY_DIR=/var/sitesettings
SAFEPLACE=/sitesettings/`hostname -f`

if [ ! -d $PK_DIR ]; then
echo Creating  $PK_DIR;
  mkdir -p $PK_DIR;
fi

echo "Syncing ${#DIRS[@]} directories to ${#REMOTE[@]} site(s)"

for ((i = 0 ; i < ${#REMOTE[@]} ; i++)); do
  for j in ${DIRS[@]}; do
   rsync -avl -e "ssh -l ${RUSERS[$i]} -i $PKEY_DIR/${REMOTE[$i]}" \
     --backup --backup-dir=.`date +%Y-%m-%d` \
     "$j" ${REMOTE[$i]}:"$SAFEPLACE$j"
  done
done

-- 
ejs