This is the command ubuntu-core-upgrade that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
ubuntu-core-upgrade - apply an Ubuntu Core system image to a running system
SYNOPSIS
ubuntu-core-upgrade [OPTIONS]... command-file
DESCRIPTION
This command, which is generally configured to be called by system-image-cli(1) applies
the latest Ubuntu Core system image to the running system.
The argument command-file should specify the full path to the declarative script generated
by system-image-cli(1) listing all steps required for the upgrade.
OPTIONS
--check-reboot
Attempt to determine if a reboot may be required.
This option is similar to --dry-run: no system changes are made.
Note that the result of this command cannot be definitive since a reboot would be
triggered if a service failed to start (but this option does not attempt to restart
any services).
--clean-only
Clean up from a previous upgrader run, but do not upgrade.
--debug
Enable debug output.
--dry-run
Do not actually apply the update - simulate what would happen.
--force-inplace-upgrade
Apply an upgrade to current rootfs even if running on dual rootfs system (for
testing).
-h, --help
Display usage.
--leave-files
Do not remove the downloaded system image files after upgrade.
--no-reboot
Do not reboot even if one would normally be required.
--reboot-delay=seconds
Wait for specified number of seconds before rebooting (default=2).
--root-dir=directory
Specify an alternative root directory (for testing).
--show-other-details
Dump the details of the system-image vesion on the other root partition.
--tmpdir=directory
Specify a alternate, pre-existing temporary directory to use.
NOTES
If invoked without --check-reboot and without --debug, output will be sent to standard
error and syslog.
WARNING
This script should not be invoked directly by a user or administrator.
COPYRIGHT
Copyright © 2014 Canonical Ltd.
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