NM-ONLINE(1) General Commands Manual NM-ONLINE(1)
NAME
nm-online - ask NetworkManager whether the network is connected
SYNOPSIS
nm-online [OPTIONS...]
DESCRIPTION
nm-online is a utility to find out whether we are online. It is done by
asking NetworkManager about its status. When run, nm-online waits until
NetworkManager reports an active connection, or specified timeout
expires. On exit, the returned status code should be checked (see the
return codes below).
This tool is not very useful to call directly. It is however used by
NetworkManager-wait-online.service with --wait-for-startup argument (see
NetworkManager-wait-online.service(8)).
By default, connections have the ipv4.may-fail and ipv6.may-fail
properties set to yes; this means that NetworkManager waits for one of
the two address families to complete configuration before considering
the connection activated. If you need a specific address family
configured before network-online.target is reached, set the
corresponding may-fail property to no.
OPTIONS
-h | --help
Print help information.
-q | --quiet
Don't print anything.
-s | --wait-for-startup
Wait for NetworkManager startup to complete, rather than waiting for
network connectivity specifically. Startup is considered complete
once NetworkManager has activated (or attempted to activate) every
auto-activate connection which is available given the current
network state. This corresponds to the moment when NetworkManager
logs "startup complete". This mode is generally only useful at boot
time. After startup has completed, nm-online -s will just return
immediately, regardless of the current network state.
There are various ways to affect when startup complete is reached.
For details see NetworkManager-wait-online.service(8).
-t | --timeout seconds
Time to wait for a connection, in seconds. If the option is not
provided, the environment variable NM_ONLINE_TIMEOUT is honored. The
default timeout is 30 seconds.
-x | --exit
Exit immediately if NetworkManager is not running or connecting.
EXIT STATUS
nm-online exits with status 0 if it succeeds, a value greater than 0 is
returned if an error occurs.
0
Success – already online or connection established within given
timeout.
1
Offline or not online within given timeout.
2
Unknown or unspecified error.
SEE ALSO
nmcli(1), NetworkManager(8), NetworkManager-wait-online.service(8).
NetworkManager 1.52.1 NM-ONLINE(1)
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