【初心者】Ubuntu Linux 134【本スレ】

[過去ﾛｸﾞ] 【初心者】Ubuntu Linux 134【本スレ】 (1002ﾚｽ)
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992: (ｶﾞｯｸｼ 068e-E6ke) 2022/04/25(月)16:04 ID:u+/QquCg6(4/4) AAS
エラー全文は以下になります。

% sudo apt update

[sudo] password for username:

Err:1 外部ﾘﾝｸ:ppa.launchpad.net xenial InRelease

Temporary failure resolving 'proxy ×× net'

Err:2 外部ﾘﾝｸ:security.ubuntu.com xenial-security InRelease

Temporary failure resolving 'proxy ×× net'

Err:3 外部ﾘﾝｸ:archive.ubuntu.com xenial InRelease

Temporary failure resolving 'proxy ×× net'

Err:4 外部ﾘﾝｸ:archive.ubuntu.com xenial-updates InRelease

Temporary failure resolving 'proxy ×× net'

Reading package lists... Done
Building dependency tree
Reading state information... Done

W: Failed to fetch 外部ﾘﾝｸ:jp.archive.ubuntu.com Temporary failure resolving 'proxy.××.net'
W: Failed to fetch 外部ﾘﾝｸ:jp.archive.ubuntu.comーupdates/InRelease Temporary failure resolving 'proxy.××.net'
W: Failed to fetch 外部ﾘﾝｸ:jp.archive.ubuntu.comーbackports/InRelease Temporary failure resolving 'proxy.××.net'
W: Failed to fetch 外部ﾘﾝｸ:jp.archive.ubuntu.comーsecurity/InRelease Temporary failure resolving 'proxy.××.net'
W: Some index files failed to download.They have been ignored,or old ones used instead.