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April, 26th. 2006:
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FAILLOG
Section: System Management Commands (8) Updated: 05/17/2017 Index
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NAME
faillog - display faillog records or set login failure limits
SYNOPSIS
-
faillog [options]
DESCRIPTION
faillog
displays the contents of the failure log database (/var/log/faillog). It can also set the failure counters and limits. When
faillog
is run without arguments, it only displays the faillog records of the users who had a login failure.
OPTIONS
The options which apply to the
faillog
command are:
-a, --all
-
Display (or act on) faillog records for all users having an entry in the
faillog
database.
The range of users can be restricted with the
-u
option.
In display mode, this is still restricted to existing users but forces the display of the faillog entries even if they are empty.
With the
-l,
-m,
-r,
-t
options, the users' records are changed, even if the user does not exist on the system. This is useful to reset records of users that have been deleted or to set a policy in advance for a range of users.
-h, --help
-
Display help message and exit.
-l, --lock-secs SEC
-
Lock account for
SEC
seconds after failed login.
Write access to
/var/log/faillog
is required for this option.
-m, --maximum MAX
-
Set the maximum number of login failures after the account is disabled to
MAX.
Selecting a
MAX
value of 0 has the effect of not placing a limit on the number of failed logins.
The maximum failure count should always be 0 for
root
to prevent a denial of services attack against the system.
Write access to
/var/log/faillog
is required for this option.
-r, --reset
-
Reset the counters of login failures.
Write access to
/var/log/faillog
is required for this option.
-R, --root CHROOT_DIR
-
Apply changes in the
CHROOT_DIR
directory and use the configuration files from the
CHROOT_DIR
directory.
-t, --time DAYS
-
Display faillog records more recent than
DAYS.
-u, --user LOGIN|RANGE
-
Display faillog record or maintains failure counters and limits (if used with
-l,
-m
or
-r
options) only for 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-).
When none of the
-l,
-m, or
-r
options are used,
faillog
displays the faillog record of the specified user(s).
CAVEATS
faillog
only prints out users with no successful login since the last failure. To print out a user who has had a successful login since their last failure, you must explicitly request the user with the
-u
flag, or print out all users with the
-a
flag.
FILES
/var/log/faillog
-
Failure logging file.
SEE ALSO
login(1),
faillog(5).
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
- CAVEATS
-
- FILES
-
- SEE ALSO
-
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