kazulog@sv2:~$ cd /tmp
kazulog@sv2:/tmp$ echo "uploaded from sv2" > upload.txt
kazulog@sv2:/tmp$ ftp 192.168.100.10
Connected to 192.168.100.10.
220 (vsFTPd 3.0.5)
Name (192.168.100.10:kazulog): ftpdemo
331 Please specify the password.
Password: 
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> pwd
Remote directory: /home/ftpdemo
ftp> ls
229 Entering Extended Passive Mode (|||59134|)
150 Here comes the directory listing.
-rw-r--r--    1 1001     1001           26 Sep 12 10:16 hello.txt
226 Directory send OK.
ftp> get hello.txt
local: hello.txt remote: hello.txt
229 Entering Extended Passive Mode (|||53233|)
150 Opening BINARY mode data connection for hello.txt (26 bytes).
100% |***********************************************************************************************************************************************************|    26       60.88 KiB/s    00:00 ETA
226 Transfer complete.
26 bytes received in 00:00 (9.26 KiB/s)
ftp> put upload.txt
local: upload.txt remote: upload.txt
229 Entering Extended Passive Mode (|||47977|)
550 Permission denied.
ftp> bye
221 Goodbye.