Which folder is responsible for FTP login on ubuntu server 14.04?

Question

linux

I messed up with write permissions in directories, now I can't log in via ftp. Please write in which directory to change the attributes and to which

Answer 1

What is your FTP server? Look at its setup file and see what directory is indicated there.
Rights try 644, most likely given the rights to write the root directory.

Answer 2

Firstly:
And secondly, Proftpd defaults to user home directories.