Rsync data synchronization using detailed _linux

Rsync (d) service-side startup two ways
1.daemon 2.xinetd inetd
Bind to tcp/873 port after boot

% Cat/etc/xinetd.d/rsync
# Default:off
# description:the Rsync server is a good addition to a FTP server, as it \
# allows CRC Checksumming etc.
Service rsync
{
Disable = no
Socket_type = Stream
wait = no
user = root
Server =/usr/bin/rsync
Server_args =--daemon
Log_on_failure + + USERID
}

Configuration note Setting read and Write permissions owner
% cat/etc/rsyncd.conf

MOTD file =/var/log/rsync/welcome.msg
PID file =/var/log/rsync/rsyncd.pid
Lock file =/var/log/rsync/rsync.lock
Log file =/var/log/rsync/rsyncd.log

[Rsyncwww]
Comment = rsync www
Path =/var/www/
Use chroot = no
Max connections = 4
Read Only = False
List = True
UID = nobody
GID = Nobody
Auth users = Wwwuser
Secrets file =/etc/rsyncd.secrets
Hosts allow = 1.1.1.1,2.2.2.2
Hosts Deny = 0.0.0.0/0
Ignore errors = yes
Transfer logging = yes
Log format = "%a%f%l"
#log format = "%o%h [%a]%m (%u)%f%l"

[Rsyncroot]
Comment = rsync root
Path =/
Use chroot = no
Max connections = 4
Read Only = True
#read only = False
List = True
UID = root
GID = root
Auth users = Rootuser
Secrets file =/etc/rsyncd.secrets
Hosts allow = 1.1.1.1,2.2.2.2
Hosts Deny = 0.0.0.0/0
Ignore errors = yes
Transfer logging = yes
Log format = "%a%f%l"


Rsyncd.secrets one-line user name: password format

Use
Rsync-auvpz--progress Dir1 Dir2
RSYNC-ZTRUVOGLPD--progress Dir1 Dir2
RSYNC-ZTRUVOGLPD--progress Dir1/dir2
RSYNC-ZTRUVOGLPD--progress Dir1/file1 Dir2
If you do not want to include a directory/file, you can set--exclude

Remote use
Rsync 1.1.1.1:: List only
Rsync user@1.1.1.1::
Rsync User@1.1.1.1::module
Rsync User@1.1.1.1::module/path
If you do not configure Rsync server, you can use the SSH method
RSYNC-E Ssh-auvpz 1.1.1.1:/etc./

Attention/FINAL issue when synchronizing
Do not put/The directory name also contains mirror
Put/Then only the contents of the things mirror

RSYNC-ZTRUVOGLP--progress User@1.1.1.1::module/path./
For script invocation convenience also call--password-file same attention to the owner permission
You can also set the environment variable rsync_password= Access user-authenticated rsync