ubuntu/さくらについて、ここに記述してください。
$ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=18.04 DISTRIB_CODENAME=bionic DISTRIB_DESCRIPTION="Ubuntu 18.04.4 LTS"
1. update
https://www.sejuku.net/blog/85434
sudo apt-get update sudo apt-get upgrade 実行が終わったら、以下のコマンドを叩くことで最新のリリースを取得できます。 sudo apt dist-upgrade その後、update-managerを導入します。 sudo apt-get install update-manager-core これが、Ubuntuのバージョンを管理しているもので導入することでdo-release-upgradeコマンドが使用可能になります。 また、導入に移る前に確認するべきことがありますので、以下のコマンドを叩きましょう。 $ cat /etc/update-manager/release-upgrades # Default behavior for the release upgrader. [DEFAULT] # Default prompting behavior, valid options: # # never - Never check for, or allow upgrading to, 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 supported 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 if this option is used and # the currently-running release is not itself an LTS release the # upgrader will assume prompt was meant to be normal. Prompt=lts
sudo do-release-upgrade