LSLOGINS(1) User Commands LSLOGINS(1)
NAME
lslogins - display information about known users in the system
SYNOPSIS
lslogins [options] [-s|-u[=UID]] [-g groups] [-l logins] [username]
DESCRIPTION
Examine the wtmp and btmp logs, /etc/shadow (if necessary) and /passwd
and output the desired data.
The optional argument username forces lslogins to print all available
details about the specified user only. In this case the output format is
different than in case of -l or -g and unknown is username reported as
an error.
The default action is to list info about all the users in the system.
OPTIONS
Mandatory arguments to long options are mandatory for short options too.
-a, --acc-expiration
Display data about the date of last password change and the account
expiration date (see shadow(5) for more info). (Requires root
privileges.)
--btmp-file path
Alternate path for btmp.
-c, --colon-separate
Separate info about each user with a colon instead of a newline.
-e, --export
Output data in the format of NAME=VALUE. See also option --shell.
-f, --failed
Display data about the users' last failed login attempts.
-G, --supp-groups
Show information about supplementary groups.
-g, --groups groups
Only show data of users belonging to groups. More than one group may
be specified; the list has to be comma-separated. Unknown group
names are ignored.
Note that the relation between user and group may be invisible for
the primary group if the user is not explicitly specified as group
member (e.g., in /etc/group). If the command lslogins scans for
groups then it uses the groups database only, and the user database
with primary GID is not used at all.
-L, --last
Display data containing information about the users' last login
sessions.
-l, --logins logins
Only show data of users with a login specified in logins (user names
or user IDs). More than one login may be specified; the list has to
be comma-separated. Unknown login names are ignored.
-n, --newline
Display each piece of information on a separate line.
--noheadings
Do not print a header line.
--notruncate
Don’t truncate output.
-o, --output list
Specify which output columns to print. The default list of columns
may be extended if list is specified in the format +list.
--output-all
Output all available columns. --help to get a list of all supported
columns.
-p, --pwd
Display information related to login by password (see also -afL).
-r, --raw
Raw output (no columnation).
-s, --system-accs
Show system accounts. These are by default all accounts with a UID
between 101 and 999 (inclusive), with the exception of either nobody
or nfsnobody (UID 65534). This hardcoded default may be overwritten
by parameters SYS_UID_MIN and SYS_UID_MAX in the file
/etc/login.defs.
--time-format type
Display dates in short, full or iso format. The default is short,
this time format is designed to be space efficient and human
readable.
-u, --user-accs
Show user accounts. These are by default all accounts with UID above
1000 (inclusive), with the exception of either nobody or nfsnobody
(UID 65534). This hardcoded default maybe overwritten by parameters
UID_MIN and UID_MAX in the file /etc/login.defs.
-h, --help
Display help text and exit.
-V, --version
Display version and exit.
--wtmp-file path
Alternate path for wtmp.
--lastlog path
Alternate path for lastlog(8).
-y, --shell
The column name will be modified to contain only characters allowed
for shell variable identifiers. This is usable, for example, with
--export. Note that this feature has been automatically enabled for
--export in version 2.37, but due to compatibility issues, now it’s
necessary to request this behavior by --shell.
-Z, --context
Display the users' security context.
-z, --print0
Delimit user entries with a nul character, instead of a newline.
EXIT STATUS
0
if OK,
1
if incorrect arguments specified,
2
if a serious error occurs (e.g., a corrupt log).
NOTES
The default UID thresholds are read from /etc/login.defs.
Password status
Multiple fields describe password status.
"Password is locked"
The password is prefixed by '!!', and the user cannot login although
the password is set or empty. This is common for new accounts
without a set password.
"Password not required (empty)"
The password is not set (hash is missing); this is common for locked
system accounts. Not requiring a password does not mean the user can
log-in without a password. It depends on the password "lock" status.
"Login by password disabled"
'yes' means that there is no valid password. The password hash is
missing, or the hash method is unknown or contains invalid chars.
HISTORY
The lslogins utility is inspired by the logins utility, which first
appeared in FreeBSD 4.10.
AUTHORS
Ondrej Oprala <ooprala@redhat.com>, Karel Zak <kzak@redhat.com>
SEE ALSO
group(5), passwd(5), shadow(5), utmp(5)
REPORTING BUGS
For bug reports, use the issue tracker
<https://github.com/util-linux/util-linux/issues>.
AVAILABILITY
The lslogins command is part of the util-linux package which can be
downloaded from Linux Kernel Archive
<https://www.kernel.org/pub/linux/utils/util-linux/>.
util-linux 2.41 2025-02-26 LSLOGINS(1)
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