last(8)								      last(8)



NAME

  last - Displays information about previous logins

SYNOPSIS

  /usr/bin/last [-n maxlines | -maxlines] [-f filename] [name...] [tty...]

FLAGS

  -f filename
	    Reads information about previous logins from filename instead of
	    from the accounting file /var/adm/wtmp.

  -maxlines Limits the output to maxlines number of record lines.

  -n maxlines
	    Limits the output to maxlines number of record lines. Provides
	    SVID conformance, and is equivalent to -maxlines.

DESCRIPTION

  The last command displays, in reverse chronological order, all previous
  logins and logouts entered in the currently active /var/adm/wtmp file. The
  list of output records can be restricted to maxlines number of record lines
  if the -maxlines or the -n maxlines flag is specified.  The last command
  also displays logins and logouts by the user specified with the name param-
  eter, and logins and logouts from terminals specified with the tty parame-
  ter. The tty terminal references can be fully named (for example, tty0) or
  abbreviated (for example, 0). For each process, the following information
  is displayed according to session, with the most recent session listed
  first:

    +  Time session began

    +  Duration of session

    +  The tty terminal on which session took place

  The following information is included when applicable:

    +  Terminations when rebooting

    +  Continuing sessions

  If the last command is interrupted, an indication of how far the search has
  progressed in the /var/adm/wtmp file is provided.  If the command is inter-
  rupted by a quit signal, an indication as to how far the search has pro-
  gressed is provided, but the search continues.

  To obtain information about the mean time between reboots, use the word
  shutdown as the name parameter.

EXAMPLES

   1.  The following example displays all recorded logins and logouts for
       user root and all recorded logins and logouts from the console termi-
       nal:
	    last root console

   2.  The following example displays the time between system reboots:
	    % last shutdown
	    shutdown  ~				    Fri Aug 28 17:59
	    shutdown  ~				    Mon Aug 17 09:07

	    wtmp begins Mon Aug 17 08:51
       In the previous example, the shutdown pseudouser is used to list the
       mean time between system reboots.

FILES

  /usr/bin/last
	    Specifies the command path.

  /usr/include/utmp.h
	    Header file defining structures used to organize login informa-
	    tion.

  /var/adm/wtmp
	    The login/logout database file.

RELATED INFORMATION

  Commands: lastcomm(8)

  Files: utmp(4), wtmp(4).