[Linux] How to use unison for synchronize files

Replication folder /tmp/srv238 (on 192.168.2.238) <-> /tmp/srv239 (on 192.168.2.239) (master-master) with user: super.
S1. Setup login ssh without password
- Create public key and private key in ssh client:

ssh-keygen -t dsa

- Copy public key from client to ssh server:

ssh-copy-id -i ~/.ssh/id_dsa super@webserver2

S2. Config file Unison, auto answer request

sudo nano /home/super/.unison/default.prf

Edit file

root = /tmp/server238
root = ssh://192.168.2.239//tmp/server239
auto=true
batch=true

S3. Start
Manual start:

unison default

Auto start every 1 minute:

crontab -e

and add line:

  1 * * * * unison default

S4. Log

tail -f /home/super/.ssh/unison.log