Как правильно использовать CVS?

cvs login: can only use `login' command with the 'pserver' method

vir@developer /var/www/core.developer $ rsh 
usage: ssh [-1246AaCfgKkMNnqsTtVvXxYy] [-b bind_address] [-c cipher_spec]
           [-D [bind_address:]port] [-e escape_char] [-F configfile]
           [-I pkcs11] [-i identity_file]
           [-L [bind_address:]port:host:hostport]
           [-l login_name] [-m mac_spec] [-O ctl_cmd] [-o option] [-p port]
           [-R [bind_address:]port:host:hostport] [-S ctl_path]
           [-W host:port] [-w local_tun[:remote_tun]]
           [user@]hostname [command]

vir@developer /var/www/core.developer $ echo $CVS_RSH
ssh

router@jb:~$ ls /mnt/archive/cvs/
CVSROOT  Программирование

router@amalthea:~$ echo $CVSROOT
:ext:router@jb.madrouter.dc:/mnt/archive/cvs
router@amalthea:test$ ls -al
итого 0
drwxr-xr-x 2 router router  40 Мар 13 11:50 .
drwxrwxrwt 5 root   root   200 Мар 13 11:50 ..
router@amalthea:test$ cvs co Программирование
cvs checkout: Updating Программирование
cvs checkout: Updating Программирование/C
cvs checkout: Updating Программирование/C/nonet
U Программирование/C/nonet/nonet.c
U Программирование/C/nonet/readme
[...]

Mar 13 11:51:35 jb sshd[17523]: Authorized to router, krb5 principal router@MADROUTER.DC (krb5_kuserok)
Mar 13 11:51:35 jb sshd[17523]: Accepted gssapi-with-mic for router from 192.168.0.9 port 51195 ssh2
Mar 13 11:51:35 jb sshd[17523]: pam_unix(sshd:session): session opened for user router by (uid=0)
Mar 13 11:51:36 jb sshd[17525]: Received disconnect from 192.168.0.9: 11: disconnected by user
Mar 13 11:51:36 jb sshd[17523]: pam_unix(sshd:session): session closed for user router