delete ftp user on linux centos 5
 

Hi
How can i delete a ftp user on linux server centos 5 ?

What do you use for the ftp service? There are around 8 possible ftp servers you might be using, including ftpd, pure-ftpd, vsftpd and proftp.

Are users listed in a configuration file, or are they users on the system?

its vsftp , i just define a group and add users with below syntax:

useradd -a -G "gruop" "username"

now i want to remove one of the users

If you added the users simply to give them ftp access, then you can use `userdel' to remove them.

You might want to look at adding a shell option to useradd such as "-s /bin/false" or "-s /bin/nologin" so they don't gain shell access.

Another option you could look at are the "userlist_enable" and "userlist_deny" options.
The vsftpd.conf manpage gives details, but I would experiment first. There might be a typo in the manpage. I'm not clear what happens if "userlist_enable yes" and "userlist_deny no" are used.

I think that you could then maintain a list of users allowed access and control access using the list.

I think that "userlist_enable yes" and "userlist_deny yes" would allow you to do what you are doing but add users to the userlist to deny them ftp access.