Rsync detailed exclude exclude files _ server other

Question: How do I avoid synchronizing a specified folder? --exclude

rsync--exclude files and folders
Http://articles.slicehost.com/2007/10/10/rsync-exclude-files-and-folders
Very common situation: I want to sync//usr/boot/, but do not want to copy/proc/tmp these folders
If you want to avoid a path directly add--exclude
Like--exclude "Proc."
--exclude ' Sources '
Note:the directory path is relative to the folder and you are are backing up.
Note: This path must be a relative path, not an absolute path

Example: The source server/home/yjwan/bashshell has a checkout folder
[Root@centos5-4 bashshell]# Ls-dl Checkout
Drwxr-xr-x 2 root root 4096 Aug 09:14 Checkou
What do you want to do now to completely avoid copying the contents of this folder?
Target Server execution
Rsync-av--exclude "Checkout" yjwan@172.16.251.241:/home/yjwan/bashshell/tmp
This folder will not be copied
[root@free/tmp/bashshell]# ls-d/tmp/bashshell/checkout
LS:/tmp/bashshell/checkout:no such file or directory

Note:

1 in fact, the system treats files and folders equally, and if checkout is a file, it will not replicate

2 If you want to avoid copying the contents of checkout, you can write--exclude "checkout/123"

3 Remember not to write as--exclude "/checkout" such absolute path
This writing will not prevent checkout from being copied
Like what
[root@free/tmp/bashshell]# rsync-av--exclude "/checkout" yjwan@172.16.251.241:/home/yjwan/bashshell/tmp
Receiving file list ... done
bashshell/checkout/

4 You can use wildcard characters to avoid content that you don't want to copy
Like--exclude "fire*."
Then the fire file or folder will not be copied.
5 If you want to avoid duplication of files too much, you can write this
--exclude-from=/exclude.list

Exclude.list is a file, the placement of the location is the absolute path of the/exclude.list, in order to avoid problems, it is best to set the absolute path.

The contents must be written as a relative path.

Like I want to avoid checkout folders and fire files.

So/exclude.list is written as
Checkout
fire*
Then execute the following command, note that writing as--exclude-from or--exclude-from= can be
But not for--exclude.
Rsync-av--exclude-from= "/exclude.list" yjwan@172.16.251.241:/home/yjwan/bashshell/tmp
Check results: Really avoids the checkout folder and the fire file

Question: How do you calculate the correct number of files after replication?

1 Check the error log to see if there is something wrong with the copy
2 The total number of specific files and folders that can be performed at the source server
Ls–alr|grep "^[-d]" |WC
The target server then calculates the number of times
Let's see if the numbers are right.
No, no, no, look again.
3 The question now is: If I use the--exclude parameter, I'm in trouble.

How do I know how many files to copy?

First of all, the previous command mentioned a writing, that is, only the source address, there is no target address, this method can be used to list all the files should be copied

So with this command, you can calculate the number of files and folders under this/root/bashshell

Executing on the server side

[Root@centos5-4 bashshell]# rsync-av/root/bashshell/|grep "^[-d]" | Wc
62 310 4249
Consistent with the results of LS.
[Root@centos5-4 bashshell]# ls-alr |grep "^[-d]" |WC
62 558 3731
So, for example, I don't want to fire the first file, you can compute the file to be copied on the server side.
[Root@centos5-4 bashshell]# rsync-av--exclude "fire*"/root/bashshell/|grep "^[-d]" | Wc
44 220 2695
And then copy the past.
The number of files and folders to look at the target machine is
[root@free/tmp]# ls-alr/tmp/bashshell/|grep "^[-d]" |WC
44 396 2554
You know, 2 are synchronized.

problem: Several other common parameters of rsync
1
-z–compress compress file data during the transfer
--compress-level=num explicitly set compression level
--skip-compress=list skip compressing files with suffix in LIST
Compressed transmission, if the network bandwidth is not enough, then should be compressed later transmission, the consumption of course is machine resources, but if the intranet transmission, the number of documents is not a lot of words, this parameter is unnecessary.
2
--password-file=file
As mentioned earlier, only the remote machine is an rsync server to use this parameter
If you think that file is an SSH login password, that's a big mistake.
3
–stats:adds a little more output regarding the file transfer status.
4
–progress:shows the progress of each file transfer. Can be useful to know if your have large files being backup up.

About this parameter:

I frequently find myself adding the-p option for large transfers. It preserves partial transfers in the case of interuption, and gives a progress the on each file as it ' s being uploaded.
I move large media files back and forth to my servers, so knowing how long the transfer has remaining is very useful.
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