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needrestart - needrestart


needrestart checks which daemons need to be restarted after library upgrades.



needrestart [-(v|q)] [-n] [-c <cfg>] [-r <mode>] [-f <fe>] [-u <ui>] [-(b|p)] [-kl]
be more verbose
be quiet
set level of technical details
(e)asy mode
(a)dvanced mode
set default answer to 'no'
config filename
set restart mode
(l)ist only
(i)nteractive restart
(a)utomatically restart
ATTENTION: If needrestart is configured to run in interactive mode but is run non-interactive (i.e. unattended-upgrades) it will fallback to list only mode.
enable batch mode
nagios plugin mode: makes output and exit codes nagios compatible
overwrite debconf(7) frontend, sets the DEBIAN_FRONT environment variable to <fe>
use preferred UI package (-u ? shows available packages)

By using one of the following options only the specified checks are performed:

check for obsolete kernel
check for obsolete libraries


The following environment variables can be used to override the config file options. Command line parameters do always supersede them.

Change the configured restart mode (see also the -r parameter): (l)ist only, (i)nteractive or (a)utomatically

When used with apt-get(8) needrestart supports the following additional environment variables:

The debconf(7) frontend to use, can also set using the -f parameter.
If set to a non-empty value the apt-get(8) hook will not run needrestart after installing or updating packages.


Thomas Liske <>


2013 - 2018 (C) Thomas Liske []

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.


January 2015 needrestart