I don't know of a portable way for an inetd-style daemon to "listen" for user logins.
On some systems (including RedHat/Fedora and debian), you may be able to use PAM to do this. (pam modules don't just perform authentication, they can take other actions. As an example, pam_lastlog "prints the last login on successful login". I'm not sure what priviledge a pam module has when it executes. A more standard way to do this would be to place lines in /etc/profile /etc/csh.login and so forth for any other shells used on your system. RedHat-style systems have an /etc/profile.d where you can drop a file that will be executed at login, too. This will, of course, be executed with the user's privilege level. Another problem with this approach is that /etc/profile is executed for a "login shell", but a graphical login is not a login shell. Jeff
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