I downloaded the vsftpd file (The latest vsftpd release is v3.0.3) and manually installed it.
I then started the server using the command ./vsftpd_v1 vsftpd_v1.conf
and terminated it using Ctrl-z. When I tried to start it again using the same command it showed the following error:
500 OOPS: could not bind listening IPv4 socket
I searched the error and found that it means that server is already is running so could not bind another. So I am trying to stop the server but are not able to do. Like if I directly install it then I can use service ./vsftpd_v1 stop
.