Using the shell since the Plesk control panel won't allow it in the GUI.
Assuming you already have an existing domain (example.com) with the primary FTP user
(jack) with password (schmidt) with home directory (/home/httpd/vhosts/example.com),
and you wish to create additional ftp users (jill and bob) with the same access privileges as jack:
Procedure:
Login to server via SSH as root.
Issue the shell command:
cat /etc/passwd |grep 'jack'
This will show you a line similar to the following:
jack:x:10041:10001::/home/httpd/vhosts/example.com:/usr/local/psa/bin/chrootsh
The first number (after the 2nd colon : ) is 10041, so this is the UID of user jack.
You will need this in the 'useradd' lines since useradd wants a number for the UID.
The second number (after the 3rd colon : ) is 10001, this is the GID (psacln), we won't need that right now.
Then do the following shell commands to create the users and passwords:
useradd -u 10041 -o -d /home/httpd/vhosts/example.com -g psacln -s /usr/local/psa/bin/chrootsh jill
useradd -u 10041 -o -d /home/httpd/vhosts/example.com -g psacln -s /usr/local/psa/bin/chrootsh bob
passwd jill (enter the new password and confirm it, does not have to be the same as jack's)
passwd bob (enter the new password and confirm it, does not have to be the same as jack's)
You should now be able to use an FTP client to login with that user's name and password.
User jill and bob should be able to see the example.com docroot just as user jack can.
You should NOT be able to browse above the example.com docroot directory.
All 3 users should have the same access to the files since they belong to the same group, so no matter
which of the users created or edited the file(s), all should be able to access/edit/whatever the same files.
For more information on the shell utilities used, use:
man useradd
man passwd
NOTES:
Since these are users defined at the OS level, when connecting with an FTP client, they would login with
username 'jill', 'bob', or 'jack'. They would NOT use '
[email protected]'.
This also means that USERNAMES MUST BE UNIQUE.