1@node VTY shell
2@comment  node-name,  next,  previous,  up
3@chapter VTY shell
4
5@command{vtysh} is integrated shell of Zebra software.
6
7To use vtysh please specify ---enable-vtysh to configure script.  To use
8PAM for authentication use ---with-libpam option to configure script.
9
10vtysh only searches @value{INSTALL_PREFIX_ETC} path for vtysh.conf which
11is the vtysh configuration file.  Vtysh does not search current
12directory for configuration file because the file includes user
13authentication settings.
14
15Currently, vtysh.conf has only one command.
16
17@example
18!
19username foo nopassword
20!
21@end example
22
23With this set, user foo does not need password authentication for user vtysh.
24With PAM vtysh uses PAM authentication mechanism.
25
26If vtysh is compiled without PAM authentication, every user can use vtysh
27without authentication.
28