NAZWA
lastlog - wyświetla informacje o ostanim logowaniu dla wybranego lub wszystkich użytkowaników
STRESZCZENIE
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lastlog [opcje] |
OPIS
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.
OPCJE
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
Wyświetlenie komunikatu pomocy i zakończenie działania.
-R, --root CHROOT_DIR
Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory. Only absolute paths are supported.
-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.
UWAGI
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:
PLIKI
/var/log/lastlog
Baza danych ostatnich logowań użytkowników.
OSTRZEŻENIA
Duże luki w numeracji UID powodują, że program będzie pracował dłużej, nie wyświetlając wyników (np. jeśli w bazie lastlog nie ma wpisów dla o UID pomiedzy 170, a 800, to program będzie sprawiał wrażenie zawieszonego w trakcie przetwarzania wpisów dla użytkowanikół o UID 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.