初期設定 : システム最新化2021/04/28

	サーバー運用開始後はシステムのアップデートが難しい場面もありますが、少なくともインストール直後のシステム構築時はシステムを最新化しておきましょう。
[1]	システムを最新化します。

# リスト最新化

root@dlp:~#

apt update

Hit:1 http://jp.archive.ubuntu.com/ubuntu hirsute InRelease
Get:2 http://jp.archive.ubuntu.com/ubuntu hirsute-updates InRelease [109 kB]
Hit:3 http://jp.archive.ubuntu.com/ubuntu hirsute-backports InRelease
Get:4 http://jp.archive.ubuntu.com/ubuntu hirsute-security InRelease [101 kB]
Fetched 209 kB in 2s (106 kB/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
4 packages can be upgraded. Run 'apt list --upgradable' to see them.

# システム最新化

root@dlp:~#

apt -y upgrade

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
  libnetplan0 netplan.io python3-distupgrade ubuntu-release-upgrader-core
4 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 256 kB of archives.
After this operation, 0 B of additional disk space will be used.
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