操作系统：centos-发布-8.2-2.2004.0.1.el8.x86_64
主持人：数字海洋
最近，当我登录我的帐户时，我得到了一长串更新和活动列表。我相信这些更新已经安装，当我尝试安装它们时，我得到了此输出。
$ sudo dnf update -y
Last metadata expiration check: 0:22:54 ago on Fri 14 Aug 2020 07:37:47 PM MST.
Dependencies resolved.
Nothing to do.
Complete!
然而下次我登录时再次得到下面的输出。（我大大缩短了这个输出）。
问题）一旦安装了这些更新，它们是否应该消失，下次登录时不会弹出？有办法清除它吗？我理解得不好吗？
The following updates were downloaded on 'server.example.com':
================================================================================
Package ArchVersion Repository Size
================================================================================
Installing:
kernel x86_644.18.0-193.14.2.el8_2
BaseOS 2.8 M
kernel-core x86_644.18.0-193.14.2.el8_2
BaseOS 28 M
kernel-devel x86_644.18.0-193.14.2.el8_2
BaseOS 15 M
kernel-modules x86_644.18.0-193.14.2.el8_2
BaseOS 23 M
Upgrading:
annobin x86_648.90-1.el8.0.1
AppStream 201 k
boost-atomic x86_641.66.0-7.el8
AppStream 13 k
boost-chrono x86_641.66.0-7.el8
AppStream 22 k
boost-date-time x86_641.66.0-7.el8
AppStream 29 k
boost-filesystem x86_641.66.0-7.el8
AppStream 48 k
boost-regex x86_641.66.0-7.el8
AppStream 281 k
boost-system x86_641.66.0-7.el8
AppStream 18 k
boost-thread x86_641.66.0-7.el8
AppStream 58 k
boost-timer x86_641.66.0-7.el8
AppStream 20 k
cloud-init noarch19.4-1.el8.7
Installing weak dependencies:
PackageKit x86_641.1.12-4.el8
AppStream 601 k
elfutils-debuginfod-client x86_640.178-7.el8
AppStream 62 k
Transaction Summary
================================================================================
Install 13 Packages
Upgrade 295 Packages
Web console: https://server.example.com:9090/ or https://555.55.555.55:9090/