https://www.ibm.com/developerworks/cn/xml/x-tipxslmsg.html

https://qnapclub.eu/index.php/en

linux 内核学习资源，暂时收集。

还没有详细研究。 http://tinylab.org/linux-lab/

解决方案

This is because the docker service is not automatically started after an install. You can start the docker service in Ubuntu and its derivatives (looking at you Linux Mint) by typing: sudo service docker start To check that docker started, this file should exist: ls -la /var/run/docker.sock

https://www.instructables.com/id/Raspberry-Pi-online-SSH-easy-way/

指导文件： https://raid.wiki.kernel.org/index.php/Mdstat

下面是官方说明： https://github.com/nextcloud/nextcloud-snap/wiki/Change-data-directory-to-use-another-disk-partition Removable media Also note that the interface providing the ability to access removable media is not automatically connected upon install, so if you’d like to use external storage (or otherwise use a device in /media for data), you need to give the snap permission to access removable media by connecting that interface: $ sudo snap connect nextcloud:removable-media 可以使用 mount –bind 命令挂载已有目录。要实现自动挂载，可以写在 /etc/fstab 里面。

官方的解决方案： https://docs.python.org/3/installing/

lpq -a //显示出目前所有打印机的工作队列情况 lprm 11 //取消11号打印机作业 lpq -l -P Hp2015 //用详细方式显示打印机Hp2015作业

lpstat -t ：列出目前的“打印系统”状态，不只包括打印机而已 暂停或者开始打印机：

重新开始打印机 sudo cupsenable HP_LaserJet_1020

禁用打印机 sudo cupsdisable HP_LaserJet_1020

比如改成81端口，使用命令sudo snap set nextcloud ports.http=81