сообщает о самом последнем входе в систему всех пользователей или данного пользователя (reports the most recent login of all users or of a given user)
Имя (Name)
lastlog - reports the most recent login of all users or of a
given user
Синопсис (Synopsis)
lastlog [options]
Описание (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.
Параметры (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
Display help message and exit.
-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
Print the lastlog record of the specified user(s).
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.
Only the entries for the current users of the system will be
displayed. Other entries may exist for users that were deleted
previously.
Примечание (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".
Конфигурация (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.
Файлы (Files)
/var/log/lastlog
Database times of previous user logins.
Предостережение (Caveat)
Large gaps in UID numbers will cause the lastlog program to run
longer with no output to the screen (i.e. if in lastlog database
there is no entries for users with UID between 170 and 800
lastlog will appear to hang as it processes entries with UIDs
171-799).
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.
