File system events via ftp

Question

linux

I ask you to help with advice dear habrosoobshchestvo.
There is such a task: to monitor the folder for the appearance of new files. Those. as soon as a new file appears in the folder, we run the script to copy this file to the local folder. The nuance is that the folder is located on a remote server, and access there via ftp. Is it feasible in principle (practically unlimited in funds)?
Thanks in advance to all who respond.

Answer 1

Do you need it immediately after the appearance? wget won't run once a minute?
Can't install the software on the server? I would swap client and server roles in this case.
And yes, there is a problem of underwritten files. Someone uploads or copies a file locally on the server to a monitored folder. The file will be "changed" permanently. How do you at least theoretically propose to determine only with the help of the client to track the fact of uploading a file? Without tracking xferlog on the server, no way.

Answer 2

inotify / inotify-tools

Answer 3

allwaysync.com/ - can copy from ftp

Answer 4

Head-on option - poll the ftp server every second, copy new files

Answer 5

lftp can synchronize a remote directory with a local one.
Here is a good example - serverfault.com/questions/24622/how-to-use-rsync-over-ftp

Answer 6

Some ftp servers are able to call a predefined script at the end of a file upload. Here you need to look at which server is being used.

Answer 7

rsync-?