NAME

       login - startet eine Sitzung auf dem System

ÜBERSICHT

       login [-p] [-h host] [Benutzername] [ENV=VAR...]

       login [-p] [-h host] -f Benutzername

       login [-p] -r host

BESCHREIBUNG

       The login program is used to establish a new session with the system. It is normally
       invoked automatically by responding to the login: prompt on the user's terminal. login may
       be special to the shell and may not be invoked as a sub-process. When called from a shell,
       login should be executed as exec login which will cause the user to exit from the current
       shell (and thus will prevent the new logged in user to return to the session of the
       caller). Attempting to execute login from any shell but the login shell will produce an
       error message.

       The user is then prompted for a password, where appropriate. Echoing is disabled to
       prevent revealing the password. Only a small number of password failures are permitted
       before login exits and the communications link is severed.

       If password aging has been enabled for your account, you may be prompted for a new
       password before proceeding. You will be forced to provide your old password and the new
       password before continuing. Please refer to passwd(1) for more information.

       Your user and group ID will be set according to their values in the /etc/passwd file. The
       value for $HOME, $SHELL, $PATH, $LOGNAME, and $MAIL are set according to the appropriate
       fields in the password entry. Ulimit, umask and nice values may also be set according to
       entries in the GECOS field.

       On some installations, the environmental variable $TERM will be initialized to the
       terminal type on your tty line, as specified in /etc/ttytype.

       Ein Startskript für Ihren Befehlsinterpreter kann auch ausgeführt werden. Sehen Sie bitte
       in den entsprechenden Handbuchseiten für weitere Informationen darüber nach.

       Eine Subsystem-Anmeldung wird durch einen »*« als erstes Zeichen der Anmelde-Shell
       gekennzeichnet. Das angegebene Home-Verzeichnis wird als Wurzel für das Dateisystem
       verwendet, auf welchem der Benutzer tatsächlich angemeldet ist.

       The login program is NOT responsible for removing users from the utmp file. It is the
       responsibility of getty(8) and init(8) to clean up apparent ownership of a terminal
       session. If you use login from the shell prompt without exec, the user you use will
       continue to appear to be logged in even after you log out of the "subsession".

OPTIONEN

       -f
           Keine Authentifizierung durchführen, Benutzer ist bereits angemeldet.

           Note: In that case, username is mandatory.

       -h
           Name des entfernt stehenden Rechners für die Anmeldung

       -p
           behält die Umgebungseinstellungen bei

       -r
           führt das Autologin-Protokoll für rlogin aus

       The -r, -h and -f options are only used when login is invoked by root.

WARNUNGEN

       This version of login has many compilation options, only some of which may be in use at
       any particular site.

       Der Ort der Konfigurationsdateien kann je nach Konfiguration des Systems unterschiedlich
       sein.

       The login program is NOT responsible for removing users from the utmp file. It is the
       responsibility of getty(8) and init(8) to clean up apparent ownership of a terminal
       session. If you use login from the shell prompt without exec, the user you use will
       continue to appear to be logged in even after you log out of the "subsession".

       As with any program, login's appearance can be faked. If non-trusted users have physical
       access to a machine, an attacker could use this to obtain the password of the next person
       coming to sit in front of the machine. Under Linux, the SAK mechanism can be used by users
       to initiate a trusted path and prevent this kind of attack.

KONFIGURATION

       The following configuration variables in /etc/login.defs change the behavior of this tool:

DATEIEN

       /var/run/utmp
           Liste der aktuellen angemeldeten Sitzungen

       /var/log/wtmp
           Liste der vorangegangenen angemeldeten Sitzungen

       /etc/passwd
           Informationen zu den Benutzerkonten

       /etc/shadow
           verschlüsselte Informationen zu den Benutzerkonten

       /etc/motd
           Datei mit der Systemmeldung des Tages

       /etc/nologin
           verhindert, dass sich Benutzer außer Root anmelden

       /etc/ttytype
           Liste der Terminaltypen

       $HOME/.hushlogin
           unterdrückt die Ausgabe von Systemnachrichten

       /etc/login.defs
           Konfiguration der Shadow-Passwort-Werkzeugsammlung

SIEHE AUCH

       mail(1), passwd(1), sh(1), su(1), login.defs(5), nologin(5), passwd(5), securetty(5),
       getty(8).