LASTLOG(8)

NOM
lastlog - signaler les connexions les plus récentes de tous les utilisateurs ou d'un utilisateur donné

SYNOPSIS

lastlog [options]

DESCRIPTION

lastlog formats and prints the contents of the last login log /var/log/lastlog file. The login-name, port, and last login time will be printed. The default (no flags) causes lastlog entries to be printed, sorted by their order in /etc/passwd.

OPTIONS

The options which apply to the lastlog command are:

-b, --before DAYS
    Print only lastlog records older than DAYS.

-C, --clear
    Clear lastlog record of a user. This option can be used only together with -u (--user)).

-h, --help
    Afficher un message d'aide et quitter.

-R, --root CHROOT_DIR
    Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.

-S, --set
    Set lastlog record of a user to the current time. This option can be used only together with -u (--user)).

-t, --time DAYS
    Print the lastlog records more recent than DAYS.

-u, --user LOGIN|RANGE
    N'afficher que les entrées correspondant aux utilisateurs indiqués.

    The users can be specified by a login name, a numerical user ID, or a RANGE of users. This RANGE of users can be specified with a min and max values (UID_MIN-UID_MAX), a max value (-UID_MAX), or a min value (UID_MIN-).

If the user has never logged in the message ** Never logged in** will be displayed instead of the port and time.

Seules les entrées pour les utilisateurs actuels du système seront affichées. D'autres entrées peuvent exister pour les utilisateurs supprimés précédemment.

NOTE

The lastlog file is a database which contains info on the last login of each user. You should not rotate it. It is a sparse file, so its size on the disk is usually much smaller than the one shown by "ls -l" (which can indicate a really big file if you have in passwd users with a high UID). You can display its real size with "ls -s".

CONFIGURATION

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

LASTLOG_UID_MAX (number)
    Highest user ID number for which the lastlog entries should be updated. As higher user IDs are usually tracked by remote user identity and authentication services there is no need to create a huge sparse lastlog file for them.

    No LASTLOG_UID_MAX option present in the configuration means that there is no user ID limit for writing lastlog entries.

FICHIERS

/var/log/lastlog
    Base de données de l'heure des connexions précédentes des utilisateurs.

AVERTISSEMENTS

S'il y a des trous importants dans les valeurs des UID, lastlog s'exécutera plus lentement, sans affichage à l'écran (par exemple, s'il n'y a pas d'entrée pour les utilisateurs ayant un UID compris entre 170 et 800 dans base de données lastlog, le programme lastlog semblera bloqué comme s'il traitait les entrées correspondant aux UID 171 à 799).

Having high UIDs can create problems when handling the <term> /var/log/lastlog</term> with external tools. Although the actual file is sparse and does not use too much space, certain applications are not designed to identify sparse files by default and may require a specific option to handle them.