Users Guide

Action Ubuntu Core 16
Querying attributes from a snap
#sudo snap get <snap>
Rebooting the system Run the command:
admin@localhost:$ sudo reboot
returns:
System reboot successfully
Shutting down the system Run the command:
admin@localhost:$ sudo poweroff
The system shuts down successfully.
Add a new user if libnss-extrausers is pre-installed
$sudo adduser --extrausers testuser
Change a user’s password
$sudo passwd <user-name>
Re-mount the Ubuntu Snappy 16 root-file system as read only
Snappy 16 rootfs is Read-Only
Accessing the built-in help
admin@localhost:~$ sudo snap --help
Listing the installed snaps
admin@localhost:~$ sudo snap list
Updating the system name
admin@localhost:$ network-manager.nmcli
general hostname <NAME>
Changing the time zone When the system arrives from the factory, the operating system is
usually set to the UTC time zone.
To change the time zone to your location, run the command:
admin@localhost:~$ sudo timedatectl --help
Root-user credential Run the command:
admin@localhost:$ sudo su -
Returns:
$ admin@localhost:~# sudo su –
$ root@localhost:~#
Identifying the System Service Tag Run the command:
admin@localhost:$ cat /sys/class/dmi/id/
product_serial
The system tag is printed.
Ubuntu Network Manager
Network-Manager is a native Ubuntu Snappy connection manager. The application can be used to configure the Edge Gateway so that it's
automatically-detected and connected to the network. The application can be used to configure multiple network devices.
A command-line utility nmcli is included with Network-Manager to support non-graphical user interface configurations.
NOTE: For more information about Network Manager, see https://wiki.archlinux.org/index.php/NetworkManager
Connecting through WWAN
NOTE: For more information on configuring and connecting through WWAN, see https://docs.ubuntu.com/core/en/stacks/network/
network-manager/docs/configure-cellular-connections.
1. Check if a modem is present and identify the modem index number.
$ sudo modem-manager.mmcli –L
2. Check the modem status and identify the primary port.
$ sudo modem-manager.mmcli -m <x>
50