Rsync not updating files

I've written another article explaining on setting up SSH keys.

It also includes a script that can do all the work for you.

Rsync uses a "quick check" that (by default) checks if each file’s size and time of last modification match between the sender and receiver.

(Discuss in Talk: Rsync#) Whether transferring files locally or remotely, rsync first creates an index of block checksums of each source file.

If that's not the case, just install it with your package manager. By installing your SSH key on the destination server, it will recognize you in the future and permit instant access.

So this way we can automate the synchronization with rsync.

When not using “/” at the end of source, rsync will copy the last folder and the content of the folder.

Files can be copied locally as with cp, but the motivating purpose of rsync is to copy files remotely, i.e. Remote locations can be specified with a host-colon syntax: Reason: By default, rsync does not compare contents of files.

It's fast and it doesn't take up as much bandwidth as normal copying would. How can we avoid that rsync asks for a password every time?

And the best thing is, it can be done with only 1 command. On most modern Linux distributions you will find rsync comes preinstalled. But read on if you want to learn how to automate this. There are different ways to go about this, but the one I mostly use is installing SSH keys.

I am setting up a synced folder in a vagrant machine like shown in cmd dump below and expect that whenever I update the files in this folder on the host machine the updates will be reflected inside guest machine too, however this is not happening.

Here is the dump and evidence of it not happening (I create a sample file and modify it by changing text in in it from mypc:~ user$ cd Projects/synctest/ mypc:synctest user$ ls Vagrantfile mypc:synctest user$ cat Vagrantfile # -*- mode: ruby -*- # vi: set ft=ruby : VAGRANTFILE_API_VERSION = "2" Vagrant.configure(VAGRANTFILE_API_VERSION) do |config| # always use Vagrants insecure key insert_key = false # Setup box box = "coreos-stable" # Setup shared folder synced_folder ".", "/vagrant" # Setup memory usage provider "virtualbox" do |v| v.memory = 2048 end # Define `dev` vm define :dev do |dev| end if Vagrant.has_plugin? mypc:synctest user$ vagrant ssh Core OS stable (633.1.0) [email protected] ~ $ cd ../../vagrant/ [email protected] /vagrant $ ls Vagrantfile [email protected] /vagrant $ cat test1 [email protected] /vagrant $ exit logout Connection to 127.0.0.1 closed.

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