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.
The options which apply to the lastlog command are:
-b, --before DAYS
Print only lastlog records older than DAYS.
Clear lastlog record of a user. This option can be used only
together with -u (--user)).
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.
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
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".
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).
This page is part of the shadow-utils (utilities for managing
accounts and shadow password files) project. Information about the
project can be found at ⟨http://pkg-shadow.alioth.debian.org/⟩. If
you have a bug report for this manual page, see
⟨http://pkg-shadow.alioth.debian.org/getinvolved.php⟩. This page was
obtained from the project's upstream Git repository
⟨git://anonscm.debian.org/git/pkg-shadow/shadow.git⟩ on 2017-03-13.
If you discover any rendering problems in this HTML version of the
page, or you believe there is a better or more up-to-date source for
the page, or you have corrections or improvements to the information
in this COLOPHON (which is not part of the original manual page),
send a mail to email@example.com
shadow-utils 4.4 02/18/2017 LASTLOG(8)