Section (8) wdctl

Linux manual pages Section 8  


wdctl — show hardware watchdog status


wdctl [options] [ device... ]


Show hardware watchdog status. The default device is /dev/watchdog. If more than one device is specified then the output is separated by one blank line.

Note that the number of supported watchdog features is hardware specific.


−f, −−flags list

Print only the specified flags.

−F, −−noflags

Do not print information about flags.

−I, −−noident

Do not print watchdog identity information.

−n, −−noheadings

Do not print a header line for flags table.

−o, −−output list

Define the output columns to use in table of watchdog flags. If no output arrangement is specified, then a default set is used. Use −−help to get list of all supported columns.

−O, −−oneline

Print all wanted information on one line in key=value output format.

−r, −−raw

Use the raw output format.

−s, −settimeout seconds

Set the watchdog timeout in seconds.

−T, −−notimeouts

Do not print watchdog timeouts.

−x, −−flags−only

Same as −I −T.

−V, −−version

Display version information and exit.

−h, −−help

Display help text and exit.


Karel Zak

Lennart Poettering


The wdctl command is part of the util-linux package and is available from Linux Kernel Archive

  wdctl.8 --
Copyright (C) 2012 Karel Zak <>
May be distributed under the GNU General Public License