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From e73085fe74356df96b0e694c906f22f9c71a56c7 Mon Sep 17 00:00:00 2001
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From: Karel Zak <kzak@redhat.com>
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Date: Mon, 13 Aug 2018 13:49:26 +0200
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Subject: [PATCH 5/6] lslogins: add info about single-user output mode
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The supported command line synopsis is also
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lslogins foo
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and it provides different output than
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lslogins -l foo
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Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=1614967
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Signed-off-by: Karel Zak <kzak@redhat.com>
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---
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login-utils/lslogins.1 | 11 ++++++++++-
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login-utils/lslogins.c | 2 +-
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2 files changed, 11 insertions(+), 2 deletions(-)
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diff --git a/login-utils/lslogins.1 b/login-utils/lslogins.1
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index bd6955f82..effd42790 100644
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--- a/login-utils/lslogins.1
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+++ b/login-utils/lslogins.1
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@@ -9,10 +9,17 @@ lslogins \- display information about known users in the system
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.RB [ \-s | \-u [ =\fIUID ]]
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.RB [ \-g " \fIgroups\fR]"
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.RB [ \-l " \fIlogins\fR]"
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+.RB [\fIusername\fR]
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.SH DESCRIPTION
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.PP
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Examine the wtmp and btmp logs, /etc/shadow (if necessary) and /etc/passwd
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and output the desired data.
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+
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+The optional argument \fIusername\fR forces
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+.BR lslogins
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+to print all available details about the specified user only. In this case the
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+output format is different than in case of \fB\-l\fR or \fB\-g\fR.
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+
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.PP
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The default action is to list info about all the users in the system.
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.SH OPTIONS
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@@ -39,7 +46,8 @@ Show information about supplementary groups.
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.TP
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\fB\-g\fR, \fB\-\-groups\fR=\fIgroups\fR
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Only show data of users belonging to \fIgroups\fR. More than one group
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-may be specified; the list has to be comma-separated.
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+may be specified; the list has to be comma-separated. The unknown group
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+names are ignored.
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Note that relation between user and group may be invisible for primary group if
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the user is not explicitly specify as group member (e.g. in /etc/group). If the
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@@ -55,6 +63,7 @@ Display data containing information about the users' last login sessions.
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\fB\-l\fR, \fB\-\-logins\fR=\fIlogins\fR
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Only show data of users with a login specified in \fIlogins\fR (user names or user
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IDS). More than one login may be specified; the list has to be comma-separated.
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+The unknown login names are ignored.
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.TP
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\fB\-n\fR, \fB\-\-newline\fR
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Display each piece of information on a separate line.
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diff --git a/login-utils/lslogins.c b/login-utils/lslogins.c
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index 169962b72..501778e54 100644
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--- a/login-utils/lslogins.c
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+++ b/login-utils/lslogins.c
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@@ -1293,7 +1293,7 @@ static void __attribute__((__noreturn__)) usage(void)
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size_t i;
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fputs(USAGE_HEADER, out);
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- fprintf(out, _(" %s [options]\n"), program_invocation_short_name);
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+ fprintf(out, _(" %s [options] [<username>]\n"), program_invocation_short_name);
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fputs(USAGE_SEPARATOR, out);
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fputs(_("Display information about known users in the system.\n"), out);
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--
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2.14.4
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