====== Ubuntu OSアップデート ======

===== release-upgrades の確認 =====
<code autoconf>
$ cat /etc/update-manager/release-upgrades
# Default behavior for the release upgrader.

[DEFAULT]
# Default prompting behavior, valid options:
#
#  never  - Never check for a new release.
#  normal - Check to see if a new release is available.  If more than one new
#           release is found, the release upgrader will attempt to upgrade to
#           the release that immediately succeeds the currently-running
#           release.
#  lts    - Check to see if a new LTS release is available.  The upgrader
#           will attempt to upgrade to the first LTS release available after
#           the currently-running one.  Note that this option should not be
#           used if the currently-running release is not itself an LTS
#           release, since in that case the upgrader won't be able to
#           determine if a newer release is available.
Prompt=lts
</code>
===== 普段のアップデート =====
<code>
$ sudo apt-get update
$ sudo apt-get dist-upgrade
$ sudo apt-get autoremove
</code>
^  オプション  ^  パッケージ\\ 更新  ^  追加パッケージインストール、\\ 及び不要パッケージ削除  ^  カーネル\\ 更新  ^
|  upgrade  |  ○  |  ×  |  ×  |
|  dist-upgrade  |  ○  |  ○  |  ○  |

[[https://robonostone.blogspot.com/2016/05/ubuntu1604lts.html?m=1|Ubuntu 14.04LTSから16.04LTSにアップデートする手順]]\\
[[https://server.etutsplus.com/how-to-upgrade-to-the-latest-version-of-ubuntu-with-do-release-upgrade/|Ubuntu 最新バージョンへのアップグレード]]\\