ubuntu

ubuntu sys/app/config/solution.

ubuntu sys/app/config/solution.

ubuntu 20.04.x LTSC /etc/apt/source.list

# deb cdrom:[Ubuntu 20.04.3 LTS _Focal Fossa_ - Release amd64 (20210819)]/ focal main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://cn.archive.ubuntu.com/ubuntu/ focal main restricted
# deb-src http://cn.archive.ubuntu.com/ubuntu/ focal main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://cn.archive.ubuntu.com/ubuntu/ focal-updates main restricted
# deb-src http://cn.archive.ubuntu.com/ubuntu/ focal-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://cn.archive.ubuntu.com/ubuntu/ focal universe
# deb-src http://cn.archive.ubuntu.com/ubuntu/ focal universe
deb http://cn.archive.ubuntu.com/ubuntu/ focal-updates universe
# deb-src http://cn.archive.ubuntu.com/ubuntu/ focal-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://cn.archive.ubuntu.com/ubuntu/ focal multiverse
# deb-src http://cn.archive.ubuntu.com/ubuntu/ focal multiverse
deb http://cn.archive.ubuntu.com/ubuntu/ focal-updates multiverse
# deb-src http://cn.archive.ubuntu.com/ubuntu/ focal-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://cn.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
# deb-src http://cn.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu focal partner
# deb-src http://archive.canonical.com/ubuntu focal partner

deb http://security.ubuntu.com/ubuntu focal-security main restricted
# deb-src http://security.ubuntu.com/ubuntu focal-security main restricted
deb http://security.ubuntu.com/ubuntu focal-security universe
# deb-src http://security.ubuntu.com/ubuntu focal-security universe
deb http://security.ubuntu.com/ubuntu focal-security multiverse
# deb-src http://security.ubuntu.com/ubuntu focal-security multiverse

# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.
deb [arch=amd64] https://download.docker.com/linux/ubuntu focal stable
# deb-src [arch=amd64] https://download.docker.com/linux/ubuntu focal stable
deb [arch=amd64] https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu focal stable
# deb-src [arch=amd64] https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu focal stable

更新源：sudo apt-get upgrade
更新依赖：sudo apt-get update
安装lsb-release：sudo apt install lsb-core
查看安装包：dpkg --list
卸载安装包及其配置：sudo apt-get --purge remove 包名

Linux远程图形化界面出错：MoTTY X11 proxy: Unsupported authorisation protocol

# 普通用户报错，root用户不报错的解决方法：
cp /root/.Xauthority /home/xxx/

# 普通用户不报错，root用户报错的解决方法：
cp /home/xxx/.Xauthority /root/
- xxx为用户名

ubuntu cpupower.

cpupower安装及简单使用.

sudo apt install linux-tools-common
sudo apt install linux-tools-5.8.0-38-generic
# cpu实时频率
watch -n 1 sudo cpupower monitor
# 当前所有cpu信息
sudo cpupower -c all frequency-info
# 设置所有cpu为性能模式
sudo cpupower -c all frequency-set -g performance
# 设置所有cpu为节能模式
sudo cpupower -c all frequency-set -g powersave
# 查看所有cpu当前模式
cpupower frequency-info -o proc

system info.

Usage:
 ipcs [resource-option...] [output-option]
 ipcs -m|-q|-s -i <id>

Show information on IPC facilities.

Options:
 -i, --id <id>  print details on resource identified by <id>
 -h, --help     display this help
 -V, --version  display version

Resource options:
 -m, --shmems      shared memory segments
 -q, --queues      message queues
 -s, --semaphores  semaphores
 -a, --all         all (default)

Output options:
 -t, --time        show attach, detach and change times
 -p, --pid         show PIDs of creator and last operator
 -c, --creator     show creator and owner
 -l, --limits      show resource limits
 -u, --summary     show status summary
     --human       show sizes in human-readable format
 -b, --bytes       show sizes in bytes