last: merge sysvinit last/lastb
Signed-off-by: Ondrej Oprala <ooprala@redhat.com> Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
parent
6f96420666
commit
ce60272039
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@ -92,7 +92,7 @@ dist_bashcompletion_DATA += \
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bash-completion/chfn \
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bash-completion/chsh
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endif
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if BUILD_LAST
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if BUILD_DEPRECATED_LAST
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dist_bashcompletion_DATA += \
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bash-completion/last
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endif
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14
configure.ac
14
configure.ac
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@ -668,7 +668,6 @@ AC_ARG_ENABLE([most-builds],
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AS_IF([test "x$enable_most_builds" = xyes], [
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enable_chfn_chsh=yes
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enable_elvtune=check
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enable_last=yes
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enable_line=yes
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enable_mesg=yes
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enable_newgrp=yes
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@ -1062,9 +1061,18 @@ UL_REQUIRES_LINUX([kill])
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AM_CONDITIONAL([BUILD_KILL], [test "x$build_kill" = xyes])
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AC_ARG_ENABLE([deprecated-last],
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AS_HELP_STRING([--enable-deprecated-last], [build old deprecated last]),
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[], [enable_deprecated_last=no]
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)
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UL_BUILD_INIT([deprecated_last])
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UL_CONFLICTS_BUILD([last], [deprecated_last], [old deprecated last version])
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AM_CONDITIONAL([BUILD_DEPRECATED_LAST], [test "x$build_deprecated_last" = xyes])
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AC_ARG_ENABLE([last],
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AS_HELP_STRING([--enable-last], [build last]),
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[], [enable_last=no]
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AS_HELP_STRING([--disable-last], [do not build last]),
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[], [enable_last=yes]
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)
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UL_BUILD_INIT([last])
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AM_CONDITIONAL([BUILD_LAST], [test "x$build_last" = xyes])
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@ -1,10 +1,24 @@
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if BUILD_LAST
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usrbin_exec_PROGRAMS += last
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dist_man_MANS += login-utils/last.1
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dist_man_MANS +=
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login-utils/last.1 \
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login-utils/lastb.1
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last_SOURCES = login-utils/last.c
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install-exec-hook-last:
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cd $(DESTDIR)$(usrsbin_execdir) && ln -sf last lastb
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INSTALL_EXEC_HOOKS += install-exec-hook-last
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endif
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if BUILD_DEPRECATED_LAST
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usrbin_exec_PROGRAMS += last
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dist_man_MANS += login-utils/last-deprecated.1
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last_SOURCES = login-utils/last-deprecated.c
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endif # BUILD_DEPRECATED_LAST
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if BUILD_SULOGIN
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sbin_PROGRAMS += sulogin
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@ -0,0 +1,62 @@
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.TH LAST 1 "March 1992" "util-linux" "User Commands"
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.SH NAME
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last \(em indicate last logins by user or terminal
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.SH SYNOPSIS
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.ad l
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.B last
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.RB [ \-\fP\fInumber\fP ]
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.RB [ \-f
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.IR filename ]
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.RB [ \-t
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.IR tty ]
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.RB [ \-h
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.IR hostname ]
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.RB [ \-i
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.IR address ]
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.RB [ \-l ]
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.RB [ \-y ]
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.RI [ name ...]
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.ad b
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.SH DESCRIPTION
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\fBLast\fP looks back in the \fBwtmp\fP file which records all logins
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and logouts for information about a user, a teletype or any group of
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users and teletypes. Arguments specify names of users or teletypes of
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interest. If multiple arguments are given, the information which
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applies to any of the arguments is printed. For example ``\fBlast root
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console\fP'' would list all of root's sessions as well as all sessions
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on the console terminal. \fBLast\fP displays the sessions of the
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specified users and teletypes, most recent first, indicating the times
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at which the session began, the duration of the session, and the
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teletype which the session took place on. If the session is still
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continuing or was cut short by a reboot, \fBlast\fP so indicates.
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.LP
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The pseudo-user \fBreboot\fP logs in at reboots of the system.
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.LP
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\fBLast\fP with no arguments displays a record of all logins and
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logouts, in reverse order.
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.LP
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If \fBlast\fP is interrupted, it indicates how far the search has
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progressed in \fBwtmp\fP. If interrupted with a quit signal \fBlast\fP
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indicates how far the search has progressed so far, and the search
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continues.
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.SH OPTIONS
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.IP \fB\-\fP\fInumber\fP
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limit the number of entries displayed to that specified by \fInumber\fP.
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.IP "\fB\-f\fP \fIfilename\fP"
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Use \fIfilename\fP as the name of the accounting file instead of
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.BR /var/log/wtmp .
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.IP "\fB\-h\fP \fIhostname\fP"
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List only logins from \fIhostname\fP.
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.IP "\fB\-i\fP \fIIP address\fP"
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List only logins from \fIIP address\fP.
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.IP "\fB\-l\fP"
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List IP addresses of remote hosts instead of truncated host names.
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.IP "\fB\-t\fP \fItty\fP"
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List only logins on \fItty\fP.
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.IP "\fB\-y\fP"
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Also report year of dates.
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.SH FILES
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/var/log/wtmp \(em login data base
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.SH AVAILABILITY
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The last command is part of the util-linux package and is available from
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ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
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@ -0,0 +1,483 @@
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/*
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* Berkeley last for Linux. Currently maintained by poe@daimi.aau.dk at
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* ftp://ftp.daimi.aau.dk/pub/linux/poe/admutil*
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*
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* Copyright (c) 1987 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/* 1999-02-22 Arkadiusz Miśkiewicz <misiek@pld.ORG.PL>
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* - added Native Language Support
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*/
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/* 2001-02-14 Marek Zelem <marek@fornax.sk>
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* - using mmap() on Linux - great speed improvement
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*/
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/*
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* This command is deprecated. The utility is in maintenance mode,
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* meaning we keep them in source tree for backward compatibility
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* only. Do not waste time making this command better, unless the
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* fix is about security or other very critical issue.
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*
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* See Documentation/deprecated.txt for more information.
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*/
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/*
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* last
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*/
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/file.h>
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <signal.h>
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#include <string.h>
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#include <time.h>
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#include <utmp.h>
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#include <stdio.h>
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#include <getopt.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "closestream.h"
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#include "pathnames.h"
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#include "nls.h"
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#include "xalloc.h"
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#include "c.h"
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#define SECDAY (24*60*60) /* seconds in a day */
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#define NO 0 /* false/no */
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#define YES 1 /* true/yes */
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static struct utmp utmpbuf;
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#define HMAX (int)sizeof(utmpbuf.ut_host) /* size of utmp host field */
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#define LMAX (int)sizeof(utmpbuf.ut_line) /* size of utmp tty field */
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#define NMAX (int)sizeof(utmpbuf.ut_name) /* size of utmp name field */
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/* maximum sizes used for printing */
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/* probably we want a two-pass version that computes the right length */
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#define P_HMAX min(HMAX, 16)
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#define P_LMAX min(LMAX, 8)
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#define P_NMAX min(NMAX, 16)
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typedef struct arg {
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char *name; /* argument */
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#define HOST_TYPE -2
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#define TTY_TYPE -3
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#define USER_TYPE -4
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#define INET_TYPE -5
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int type; /* type of arg */
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struct arg *next; /* linked list pointer */
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} ARG;
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ARG *arglist; /* head of linked list */
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typedef struct ttytab {
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long logout; /* log out time */
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char tty[LMAX + 1]; /* terminal name */
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struct ttytab *next; /* linked list pointer */
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} TTY;
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TTY *ttylist; /* head of linked list */
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static long currentout, /* current logout value */
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maxrec; /* records to display */
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static char *file = _PATH_WTMP; /* wtmp file */
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static int doyear = 0; /* output year in dates */
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static int dolong = 0; /* print also ip-addr */
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static void wtmp(void);
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static void addarg(int, char *);
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static void hostconv(char *);
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static void onintr(int);
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static int want(struct utmp *, int);
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TTY *addtty(char *);
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static char *ttyconv(char *);
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int
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main(int argc, char **argv) {
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int ch;
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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atexit(close_stdout);
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while ((ch = getopt(argc, argv, "0123456789yli:f:h:t:")) != -1)
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switch((char)ch) {
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case '0': case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9':
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/*
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* kludge: last was originally designed to take
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* a number after a dash.
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*/
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if (!maxrec)
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maxrec = atol(argv[optind - 1] + 1);
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break;
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case 'f':
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file = optarg;
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break;
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case 'h':
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hostconv(optarg);
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addarg(HOST_TYPE, optarg);
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break;
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case 't':
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addarg(TTY_TYPE, ttyconv(optarg));
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break;
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case 'y':
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doyear = 1;
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break;
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case 'l':
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dolong = 1;
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break;
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case 'i':
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addarg(INET_TYPE, optarg);
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break;
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case '?':
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default:
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fputs(_("usage: last [-#] [-f file] [-t tty] [-h hostname] [user ...]\n"), stderr);
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exit(EXIT_FAILURE);
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}
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for (argv += optind; *argv; ++argv) {
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#define COMPATIBILITY
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#ifdef COMPATIBILITY
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/* code to allow "last p5" to work */
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addarg(TTY_TYPE, ttyconv(*argv));
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#endif
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addarg(USER_TYPE, *argv);
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}
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wtmp();
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return EXIT_SUCCESS;
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}
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static char *utmp_ctime(struct utmp *u)
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{
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time_t t = (time_t) u->ut_time;
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return ctime(&t);
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}
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/*
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* print_partial_line --
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* print the first part of each output line according to specified format
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*/
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static void
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print_partial_line(struct utmp *bp) {
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char *ct;
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ct = utmp_ctime(bp);
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printf("%-*.*s %-*.*s ", P_NMAX, P_NMAX, bp->ut_name,
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P_LMAX, P_LMAX, bp->ut_line);
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if (dolong) {
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if (bp->ut_addr) {
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struct in_addr foo;
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foo.s_addr = bp->ut_addr;
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printf("%-*.*s ", P_HMAX, P_HMAX, inet_ntoa(foo));
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} else {
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printf("%-*.*s ", P_HMAX, P_HMAX, "");
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}
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} else {
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printf("%-*.*s ", P_HMAX, P_HMAX, bp->ut_host);
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}
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if (doyear) {
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printf("%10.10s %4.4s %5.5s ", ct, ct + 20, ct + 11);
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} else {
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printf("%10.10s %5.5s ", ct, ct + 11);
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}
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}
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/*
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* wtmp --
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* read through the wtmp file
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*/
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static void
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wtmp(void) {
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register struct utmp *bp; /* current structure */
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register TTY *T; /* tty list entry */
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long delta; /* time difference */
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char *crmsg = NULL;
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char *ct = NULL;
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int fd;
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struct utmp *utl;
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struct stat st;
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int utl_len;
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int listnr = 0;
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int i;
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utmpname(file);
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{
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#if defined(_HAVE_UT_TV)
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struct timeval tv;
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gettimeofday(&tv, NULL);
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utmpbuf.ut_tv.tv_sec = tv.tv_sec;
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utmpbuf.ut_tv.tv_usec = tv.tv_usec;
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#else
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time_t t;
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time(&t);
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utmpbuf.ut_time = t;
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#endif
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||||
}
|
||||
|
||||
(void)signal(SIGINT, onintr);
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(void)signal(SIGQUIT, onintr);
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||||
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if ((fd = open(file,O_RDONLY)) < 0)
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err(EXIT_FAILURE, _("cannot open %s"), file);
|
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fstat(fd, &st);
|
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utl_len = st.st_size;
|
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utl = mmap(NULL, utl_len, PROT_READ|PROT_WRITE,
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MAP_PRIVATE|MAP_FILE, fd, 0);
|
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if (utl == NULL)
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err(EXIT_FAILURE, _("%s: mmap failed"), file);
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||||
|
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listnr = utl_len/sizeof(struct utmp);
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||||
|
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if(listnr)
|
||||
ct = utmp_ctime(&utl[0]);
|
||||
|
||||
for(i = listnr - 1; i >= 0; i--) {
|
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bp = utl+i;
|
||||
/*
|
||||
* if the terminal line is '~', the machine stopped.
|
||||
* see utmp(5) for more info.
|
||||
*/
|
||||
if (!strncmp(bp->ut_line, "~", LMAX)) {
|
||||
/*
|
||||
* utmp(5) also mentions that the user
|
||||
* name should be 'shutdown' or 'reboot'.
|
||||
* Not checking the name causes e.g. runlevel
|
||||
* changes to be displayed as 'crash'. -thaele
|
||||
*/
|
||||
if (!strncmp(bp->ut_user, "reboot", NMAX) ||
|
||||
!strncmp(bp->ut_user, "shutdown", NMAX)) {
|
||||
/* everybody just logged out */
|
||||
for (T = ttylist; T; T = T->next)
|
||||
T->logout = -bp->ut_time;
|
||||
}
|
||||
|
||||
currentout = -bp->ut_time;
|
||||
crmsg = (strncmp(bp->ut_name, "shutdown", NMAX)
|
||||
? "crash" : "down ");
|
||||
if (!bp->ut_name[0])
|
||||
(void)strcpy(bp->ut_name, "reboot");
|
||||
if (want(bp, NO)) {
|
||||
ct = utmp_ctime(bp);
|
||||
if(bp->ut_type != LOGIN_PROCESS) {
|
||||
print_partial_line(bp);
|
||||
putchar('\n');
|
||||
}
|
||||
if (maxrec && !--maxrec)
|
||||
return;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
/* find associated tty */
|
||||
for (T = ttylist;; T = T->next) {
|
||||
if (!T) {
|
||||
/* add new one */
|
||||
T = addtty(bp->ut_line);
|
||||
break;
|
||||
}
|
||||
if (!strncmp(T->tty, bp->ut_line, LMAX))
|
||||
break;
|
||||
}
|
||||
if (bp->ut_name[0] && bp->ut_type != LOGIN_PROCESS
|
||||
&& bp->ut_type != DEAD_PROCESS
|
||||
&& want(bp, YES)) {
|
||||
|
||||
print_partial_line(bp);
|
||||
|
||||
if (!T->logout)
|
||||
puts(_(" still logged in"));
|
||||
else {
|
||||
if (T->logout < 0) {
|
||||
T->logout = -T->logout;
|
||||
printf("- %s", crmsg);
|
||||
}
|
||||
else
|
||||
printf("- %5.5s", ctime(&T->logout)+11);
|
||||
delta = T->logout - bp->ut_time;
|
||||
if (delta < SECDAY)
|
||||
printf(" (%5.5s)\n", asctime(gmtime(&delta))+11);
|
||||
else
|
||||
printf(" (%ld+%5.5s)\n", delta / SECDAY, asctime(gmtime(&delta))+11);
|
||||
}
|
||||
if (maxrec != -1 && !--maxrec)
|
||||
return;
|
||||
}
|
||||
T->logout = bp->ut_time;
|
||||
utmpbuf.ut_time = bp->ut_time;
|
||||
}
|
||||
munmap(utl,utl_len);
|
||||
close(fd);
|
||||
if(ct) printf(_("\nwtmp begins %s"), ct); /* ct already ends in \n */
|
||||
}
|
||||
|
||||
/*
|
||||
* want --
|
||||
* see if want this entry
|
||||
*/
|
||||
static int
|
||||
want(struct utmp *bp, int check) {
|
||||
register ARG *step;
|
||||
|
||||
if (check) {
|
||||
/*
|
||||
* when uucp and ftp log in over a network, the entry in
|
||||
* the utmp file is the name plus their process id. See
|
||||
* etc/ftpd.c and usr.bin/uucp/uucpd.c for more information.
|
||||
*/
|
||||
if (!strncmp(bp->ut_line, "ftp", sizeof("ftp") - 1))
|
||||
bp->ut_line[3] = '\0';
|
||||
else if (!strncmp(bp->ut_line, "uucp", sizeof("uucp") - 1))
|
||||
bp->ut_line[4] = '\0';
|
||||
}
|
||||
if (!arglist)
|
||||
return YES;
|
||||
|
||||
for (step = arglist; step; step = step->next)
|
||||
switch(step->type) {
|
||||
case HOST_TYPE:
|
||||
if (!strncmp(step->name, bp->ut_host, HMAX))
|
||||
return YES;
|
||||
break;
|
||||
case TTY_TYPE:
|
||||
if (!strncmp(step->name, bp->ut_line, LMAX))
|
||||
return YES;
|
||||
break;
|
||||
case USER_TYPE:
|
||||
if (!strncmp(step->name, bp->ut_name, NMAX))
|
||||
return YES;
|
||||
break;
|
||||
case INET_TYPE:
|
||||
if ((in_addr_t) bp->ut_addr == inet_addr(step->name))
|
||||
return YES;
|
||||
break;
|
||||
default:
|
||||
abort();
|
||||
}
|
||||
return NO;
|
||||
}
|
||||
|
||||
/*
|
||||
* addarg --
|
||||
* add an entry to a linked list of arguments
|
||||
*/
|
||||
static void
|
||||
addarg(int type, char *arg) {
|
||||
register ARG *cur;
|
||||
|
||||
cur = xmalloc(sizeof(ARG));
|
||||
cur->next = arglist;
|
||||
cur->type = type;
|
||||
cur->name = arg;
|
||||
arglist = cur;
|
||||
}
|
||||
|
||||
/*
|
||||
* addtty --
|
||||
* add an entry to a linked list of ttys
|
||||
*/
|
||||
TTY *
|
||||
addtty(char *ttyname) {
|
||||
register TTY *cur;
|
||||
|
||||
cur = xmalloc(sizeof(TTY));
|
||||
cur->next = ttylist;
|
||||
cur->logout = currentout;
|
||||
memcpy(cur->tty, ttyname, LMAX);
|
||||
return(ttylist = cur);
|
||||
}
|
||||
|
||||
/*
|
||||
* hostconv --
|
||||
* convert the hostname to search pattern; if the supplied host name
|
||||
* has a domain attached that is the same as the current domain, rip
|
||||
* off the domain suffix since that's what login(1) does.
|
||||
*/
|
||||
static void
|
||||
hostconv(char *arg) {
|
||||
static int first = 1;
|
||||
static char *hostdot, *name;
|
||||
|
||||
char *argdot;
|
||||
|
||||
if (!(argdot = strchr(arg, '.')))
|
||||
return;
|
||||
|
||||
if (first) {
|
||||
first = 0;
|
||||
name = xgethostname();
|
||||
if (!name)
|
||||
err(EXIT_FAILURE, _("gethostname failed"));
|
||||
|
||||
hostdot = strchr(name, '.');
|
||||
}
|
||||
if (hostdot && !strcmp(hostdot, argdot))
|
||||
*argdot = '\0';
|
||||
}
|
||||
|
||||
/*
|
||||
* ttyconv --
|
||||
* convert tty to correct name.
|
||||
*/
|
||||
static char *
|
||||
ttyconv(char *arg) {
|
||||
char *mval;
|
||||
|
||||
/*
|
||||
* kludge -- we assume that all tty's end with
|
||||
* a two character suffix.
|
||||
*/
|
||||
if (strlen(arg) == 2) {
|
||||
/* either 6 for "ttyxx" or 8 for "console" */
|
||||
mval = xmalloc(8);
|
||||
if (!strncmp(arg, "co", 2))
|
||||
(void)strcpy(mval, "console");
|
||||
else {
|
||||
(void)strcpy(mval, "tty");
|
||||
(void)strncpy(mval + 3, arg, 4);
|
||||
}
|
||||
return mval;
|
||||
}
|
||||
if (!strncmp(arg, "/dev/", sizeof("/dev/") - 1))
|
||||
return arg + 5;
|
||||
|
||||
return arg;
|
||||
}
|
||||
|
||||
/*
|
||||
* onintr --
|
||||
* on interrupt, we inform the user how far we've gotten
|
||||
*/
|
||||
static void
|
||||
onintr(int signo) {
|
||||
char *ct;
|
||||
|
||||
ct = utmp_ctime(&utmpbuf);
|
||||
printf(_("\ninterrupted %10.10s %5.5s \n"), ct, ct + 11);
|
||||
if (signo == SIGINT)
|
||||
_exit(EXIT_FAILURE);
|
||||
fflush(stdout); /* fix required for rsh */
|
||||
}
|
|
@ -1,62 +1,124 @@
|
|||
.TH LAST 1 "March 1992" "util-linux" "User Commands"
|
||||
'\" -*- coding: UTF-8 -*-
|
||||
.\" Copyright (C) 1998-2004 Miquel van Smoorenburg.
|
||||
.\"
|
||||
.\" This program is free software; you can redistribute it and/or modify
|
||||
.\" it under the terms of the GNU General Public License as published by
|
||||
.\" the Free Software Foundation; either version 2 of the License, or
|
||||
.\" (at your option) any later version.
|
||||
.\"
|
||||
.\" This program is distributed in the hope that it will be useful,
|
||||
.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
.\" GNU General Public License for more details.
|
||||
.\"
|
||||
.\" You should have received a copy of the GNU General Public License
|
||||
.\" along with this program; if not, write to the Free Software
|
||||
.\" Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
.\"
|
||||
.\"{{{}}}
|
||||
.\"{{{ Title
|
||||
.TH LAST,LASTB 1 "Jul 31, 2004" "" "Linux System Administrator's Manual"
|
||||
.\"}}}
|
||||
.\"{{{ Name
|
||||
.SH NAME
|
||||
last \(em indicate last logins by user or terminal
|
||||
last, lastb \- show listing of last logged in users
|
||||
.\"}}}
|
||||
.\"{{{ Synopsis
|
||||
.SH SYNOPSIS
|
||||
.ad l
|
||||
.B last
|
||||
.RB [ \-\fP\fInumber\fP ]
|
||||
.RB [ \-f
|
||||
.IR filename ]
|
||||
.RB [ \-t
|
||||
.IR tty ]
|
||||
.RB [ \-h
|
||||
.IR hostname ]
|
||||
.RB [ \-i
|
||||
.IR address ]
|
||||
.RB [ \-l ]
|
||||
.RB [ \-y ]
|
||||
.RI [ name ...]
|
||||
.ad b
|
||||
.RB [ \-R ]
|
||||
.RB [ \-\fInum\fP ]
|
||||
.RB "[ \-\fBn\fP \fInum\fP ]"
|
||||
.RB [ \-adFiowx ]
|
||||
.RB "[ \-\fBf\fP \fIfile\fP ]"
|
||||
.RB "[ \-\fBt\fP \fIYYYYMMDDHHMMSS\fP ]"
|
||||
.RI [ name... ]
|
||||
.RI [ tty... ]
|
||||
.br
|
||||
.B lastb
|
||||
.RB [ \-R ]
|
||||
.RB [ \-\fInum\fP ]
|
||||
.RB "[ \-\fBn\fP \fInum\fP ]"
|
||||
.RB "[ \-\fBf\fP \fIfile\fP ]"
|
||||
.RB [ \-adFiowx ]
|
||||
.RI [ name... ]
|
||||
.RI [ tty... ]
|
||||
.\"}}}
|
||||
.\"{{{ Description
|
||||
.SH DESCRIPTION
|
||||
\fBLast\fP looks back in the \fBwtmp\fP file which records all logins
|
||||
and logouts for information about a user, a teletype or any group of
|
||||
users and teletypes. Arguments specify names of users or teletypes of
|
||||
interest. If multiple arguments are given, the information which
|
||||
applies to any of the arguments is printed. For example ``\fBlast root
|
||||
console\fP'' would list all of root's sessions as well as all sessions
|
||||
on the console terminal. \fBLast\fP displays the sessions of the
|
||||
specified users and teletypes, most recent first, indicating the times
|
||||
at which the session began, the duration of the session, and the
|
||||
teletype which the session took place on. If the session is still
|
||||
continuing or was cut short by a reboot, \fBlast\fP so indicates.
|
||||
.LP
|
||||
The pseudo-user \fBreboot\fP logs in at reboots of the system.
|
||||
.LP
|
||||
\fBLast\fP with no arguments displays a record of all logins and
|
||||
logouts, in reverse order.
|
||||
.LP
|
||||
If \fBlast\fP is interrupted, it indicates how far the search has
|
||||
progressed in \fBwtmp\fP. If interrupted with a quit signal \fBlast\fP
|
||||
indicates how far the search has progressed so far, and the search
|
||||
continues.
|
||||
.B Last
|
||||
searches back through the file \fB/var/log/wtmp\fP (or the file
|
||||
designated by the \fB\-f\fP flag) and displays a list of all
|
||||
users logged in (and out) since that file was created. Names of users
|
||||
and tty's can be given, in which case \fBlast\fP will show only those entries
|
||||
matching the arguments. Names of ttys can be abbreviated, thus \fBlast
|
||||
0\fP is the same as \fBlast tty0\fP.
|
||||
.PP
|
||||
When \fBlast\fP catches a \s-2SIGINT\s0 signal (generated by the interrupt key,
|
||||
usually control-C) or a \s-2SIGQUIT\s0 signal (generated by the quit key,
|
||||
usually control-\e), \fBlast\fP will show how far it has searched through the
|
||||
file; in the case of the \s-2SIGINT\s0 signal \fBlast\fP will then terminate.
|
||||
.PP
|
||||
The pseudo user \fBreboot\fP logs in each time the system is rebooted.
|
||||
Thus \fBlast reboot\fP will show a log of all reboots since the log file
|
||||
was created.
|
||||
.PP
|
||||
\fBLastb\fP is the same as \fBlast\fP, except that by default it shows a log
|
||||
of the file \fB/var/log/btmp\fP, which contains all the bad login attempts.
|
||||
.\"}}}
|
||||
.\"{{{ Options
|
||||
.SH OPTIONS
|
||||
.IP \fB\-\fP\fInumber\fP
|
||||
limit the number of entries displayed to that specified by \fInumber\fP.
|
||||
.IP "\fB\-f\fP \fIfilename\fP"
|
||||
Use \fIfilename\fP as the name of the accounting file instead of
|
||||
.BR /var/log/wtmp .
|
||||
.IP "\fB\-h\fP \fIhostname\fP"
|
||||
List only logins from \fIhostname\fP.
|
||||
.IP "\fB\-i\fP \fIIP address\fP"
|
||||
List only logins from \fIIP address\fP.
|
||||
.IP "\fB\-l\fP"
|
||||
List IP addresses of remote hosts instead of truncated host names.
|
||||
.IP "\fB\-t\fP \fItty\fP"
|
||||
List only logins on \fItty\fP.
|
||||
.IP "\fB\-y\fP"
|
||||
Also report year of dates.
|
||||
.IP "\fB\-f\fP \fIfile\fP"
|
||||
Tells \fBlast\fP to use a specific file instead of \fB/var/log/wtmp\fP.
|
||||
.IP \fB\-\fP\fInum\fP
|
||||
This is a count telling \fBlast\fP how many lines to show.
|
||||
.IP "\fB\-n\fP \fInum\fP"
|
||||
The same.
|
||||
.IP "\fB\-t\fP \fIYYYYMMDDHHMMSS\fP"
|
||||
Display the state of logins as of the specified time. This is
|
||||
useful, e.g., to determine easily who was logged in at a particular
|
||||
time -- specify that time with \fB\-t\fP and look for "still logged
|
||||
in".
|
||||
.IP "\fB\-f\fP \fIfile\fP"
|
||||
Specifies a file to search other than \fB/var/log/wtmp\fP.
|
||||
.IP \fB\-R\fP
|
||||
Suppresses the display of the hostname field.
|
||||
.IP \fB\-a\fP
|
||||
Display the hostname in the last column. Useful in combination
|
||||
with the next flag.
|
||||
.IP \fB\-d\fP
|
||||
For non-local logins, Linux stores not only the host name of the remote
|
||||
host but its IP number as well. This option translates the IP number
|
||||
back into a hostname.
|
||||
.IP \fB\-F\fP
|
||||
Print full login and logout times and dates.
|
||||
.IP \fB\-i\fP
|
||||
This option is like \fB-d\fP in that it displays the IP number of the remote
|
||||
host, but it displays the IP number in numbers-and-dots notation.
|
||||
.IP \fB\-w\fP
|
||||
Display full user and domain names in the output.
|
||||
.IP \fB\-x\fP
|
||||
Display the system shutdown entries and run level changes.
|
||||
.\"}}}
|
||||
.SH NOTES
|
||||
The files \fIwtmp\fP and \fIbtmp\fP might not be found. The system only
|
||||
logs information in these files if they are present. This is a local
|
||||
configuration issue. If you want the files to be used, they can be
|
||||
created with a simple \fBtouch\fP(1) command (for example,
|
||||
\fItouch /var/log/wtmp\fP).
|
||||
.\"{{{ Files
|
||||
.SH FILES
|
||||
/var/log/wtmp \(em login data base
|
||||
.SH AVAILABILITY
|
||||
The last command is part of the util-linux package and is available from
|
||||
ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
|
||||
/var/log/wtmp
|
||||
.br
|
||||
/var/log/btmp
|
||||
.\"}}}
|
||||
.\"{{{ Author
|
||||
.SH AUTHOR
|
||||
Miquel van Smoorenburg, miquels@cistron.nl
|
||||
.\"}}}
|
||||
.\"{{{ See also
|
||||
.SH "SEE ALSO"
|
||||
.BR shutdown (8),
|
||||
.BR login (1),
|
||||
.BR init (8)
|
||||
.\"}}}
|
||||
|
|
1240
login-utils/last.c
1240
login-utils/last.c
File diff suppressed because it is too large
Load Diff
|
@ -0,0 +1 @@
|
|||
.so man1/last.1
|
Loading…
Reference in New Issue