apt update
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apt update Hit:1 http://archive.ubuntu.com/ubuntu bionic InRelease Hit:2 http://archive.ubuntu.com/ubuntu bionic-updates InRelease Hit:3 http://archive.ubuntu.com/ubuntu bionic-backports InRelease Hit:4 http://archive.ubuntu.com/ubuntu bionic-security InRelease Get:5 https://download.docker.com/linux/ubuntu bionic InRelease [64.4 kB] Fetched 64.4 kB in 2s (34.2 kB/s) Reading package lists... Done Building dependency tree Reading state information... Done 98 packages can be upgraded. Run 'apt list --upgradable' to see them.
apt update Hit:1 http://eu-central-1.ec2.archive.ubuntu.com/ubuntu bionic InRelease Get:2 http://eu-central-1.ec2.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB] Get:3 http://eu-central-1.ec2.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB] Get:4 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB] Get:5 http://eu-central-1.ec2.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages [2,489 kB] Get:6 http://eu-central-1.ec2.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 Packages [24.9 kB] Fetched 2,766 kB in 1s (3,199 kB/s) Reading package lists... Done Building dependency tree Reading state information... Done All packages are up to date.
apt -qq update 98 packages can be upgraded. Run 'apt list --upgradable' to see them.
--qq quiet and yes
apt update > /dev/null
Contents
GPG error
apt update .../... Reading package lists... Done W: GPG error: http://downloads.linux.hpe.com/SDR/repo/mcp focal/current Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C208ADDE26C2B797 E: The repository 'http://downloads.linux.hpe.com/SDR/repo/mcp focal/current Release' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.
Solution
- A)
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys C208ADDE26C2B797 - B)
deb [trusted=yes] http://www.your_not_trustedcert.org jessie main
apt update NO_PACKAGE_AS_ARGUMENT E: The update command takes no arguments
Related terms
See also
APT:wajig,apt-cache,add-apt-repositoryPPA,apt[install|remove|purge | show | list | changelog|update|upgrade],do-release-upgrade,apt-mark,apt full-upgrade,sources.list, APT Automatic updates,unattended-upgrade,apt-transport-https,apt-get update,/etc/apt/,/etc/apt/apt.conf.d/50unattended-upgrades,/etc/apt/apt.conf.d/,/etc/apt/apt.conf.d/20auto-upgrades,apt-file, apt-utils
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