rdiff- , , posix linux & MAC OS . rysnc librsync rsync. rdiff- . . punching . , , ssh .

:
1. . . . passwd/:

/etc/passwd
: : 99: 99: : /backup: /bin/false
/etc/shadow
:!!: 12644: 0: 99999: 7:::

useradd.

2. ssh ( ) .

3. rdiff-

3. ssh config , , . , , /backup/.ssh/config:

client1-
hostname client1

identityfile /backup/.ssh/id_rsa

2

4.
rdiff- client1-:: client1- /tmp

5. cron

. .