这个信息是什么意思?
Welcome to Ubuntu 20.04.4 LTS (GNU/Linux 5.4.0-124-generic x86_64)
[unimportant stuff about documentation and system use]
0 updates can be applied immediately.
New release '22.04.1 LTS' available.
Run 'do-release-upgrade' to upgrade to it.
lsb_realease -a报告:
Distributo