nmcli command examples

nmcli command examples

nmcli – command-line tool for controlling NetworkManager

This section presents various examples of nmcli usage.

#nmcli -t -f RUNNING general

tells you whether NetworkManager is running or not.

#nmcli -t -f STATE general

shows the overall status of NetworkManager.

#nmcli radio wifi off

switches Wi-Fi off.

#nmcli connection show

lists all connections NetworkManager has.

#nmcli -p -m multiline -f all con show

shows all configured connections in multi-line mode.

#nmcli connection show --active

lists all currently active connections.

#nmcli -f name,autoconnect c s

shows all connection profile names and their auto-connect property.

#nmcli -p connection show "My default em1"

shows details for “My default em1” connection profile.

#nmcli --show-secrets connection show "My Home WiFi"

shows details for “My Home WiFi” connection profile with all passwords. Without –show-secrets option, secrets would not be displayed.

#nmcli -f active connection show "My default em1"

shows details for “My default em1” active connection, like IP, DHCP information, etc.

#nmcli -f profile con s "My wired connection"

shows static configuration details of the connection profile with “My wired connection” name.

#nmcli -p con up "My wired connection" ifname eth0

activates the connection profile with name “My wired connection” on interface eth0. The -p option makes nmcli¬†show progress of the activation.

#nmcli con up 6b028a27-6dc9-4411-9886-e9ad1dd43761 ap 00:3A:98:7C:42:D3

connects the Wi-Fi connection with UUID 6b028a27-6dc9-4411-9886-e9ad1dd43761 to the AP with BSSID 00:3A:98:7C:42:D3.

#nmcli device status

shows the status for all devices.

#nmcli dev disconnect em2

disconnects a connection on interface em2 and marks the device as unavailable for auto-connecting. As a result, no connection will automatically be activated on the device until the device’s ‘autoconnect’ is set to TRUE or the user manually activates a connection.

#nmcli -f GENERAL,WIFI-PROPERTIES dev show wlan0

shows details for wlan0 interface; only GENERAL and WIFI-PROPERTIES sections will be shown.

#nmcli -f CONNECTIONS device show wlp3s0

shows all available connection profiles for your Wi-Fi interface wlp3s0.

nmcli dev wifi

lists available Wi-Fi access points known to NetworkManager.

nmcli dev wifi con "Cafe Hotspot 1" password caffeine name "My cafe"

creates a new connection named “My cafe” and then connects it to “Cafe Hotspot 1” SSID using password “caffeine”. This is mainly useful when connecting to “Cafe Hotspot 1” for the first time. Next time, it is better to use nmcli con up id “My cafe” so that the existing connection profile can be used and no additional is created.

nmcli -s dev wifi hotspot con-name QuickHotspot

creates a hotspot profile and connects it. Prints the hotspot password the user should use to connect to the hotspot from other devices.

nmcli dev modify em1 ipv4.method shared

starts IPv4 connection sharing using em1 device. The sharing will be active until the device is disconnected.

nmcli dev modify em1 ipv6.address 2001:db8::a:bad:c0de

temporarily adds an IP address to a device. The address will be removed when the same connection is activated again.

nmcli connection add type ethernet autoconnect no ifname eth0

non-interactively adds an Ethernet connection tied to eth0 interface with automatic IP configuration (DHCP), and disables the connection’s autoconnect flag.

nmcli c a ifname Maxipes-fik type vlan dev eth0 id 55

non-interactively adds a VLAN connection with ID 55. The connection will use eth0 and the VLAN interface will be named Maxipes-fik.

nmcli c a ifname eth0 type ethernet ipv4.method disabled ipv6.method link-local

non-interactively adds a connection that will use eth0 Ethernet interface and only have an IPv6 link-local address configured.

nmcli connection edit ethernet-em1-2

edits existing “ethernet-em1-2” connection in the interactive editor.

nmcli connection edit type ethernet con-name "yet another Ethernet connection"

adds a new Ethernet connection in the interactive editor.

nmcli con mod ethernet-2 connection.autoconnect no

modifies ‘autoconnect’ property in the ‘connection’ setting of ‘ethernet-2’ connection.

nmcli con mod "Home Wi-Fi" wifi.mtu 1350

modifies ‘mtu’ property in the ‘wifi’ setting of ‘Home Wi-Fi’ connection.

nmcli con mod em1-1 ipv4.method manual ipv4.addr "192.168.1.23/24 192.168.1.1, 10.10.1.5/8, 10.0.0.11"

sets manual addressing and the addresses in em1-1 profile.

nmcli con modify ABC +ipv4.dns 8.8.8.8

appends a Google public DNS server to DNS servers in ABC profile.

nmcli con modify ABC -ipv4.addresses "192.168.100.25/24 192.168.1.1"

removes the specified IP address from (static) profile ABC.

nmcli con import type openvpn file ~/Downloads/frootvpn.ovpn$

imports an OpenVPN configuration to NetworkManager.

nmcli con export corp-vpnc /home/joe/corpvpn.conf

exports NetworkManager VPN profile corp-vpnc as standard Cisco (vpnc) configuration.

 

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