Tailscale on Ubuntu put too many logs into /var/log/syslog

answer:

  1. Edit the file /etc/systemd/system/multi-user.target.wants/tailscaled.service,
  2. Add the line "LogLevelMax=3" in the [Service] section.
  3. systemctl daemon-reload
  4. systemctl restart tailscaled

Reference

Power shell: Start-Transcript and Stop-Transcript help you log a session.

12 Angry Men (1957）/ 十二怒汉

I watched this movie at Last Friday night. I love it.

Linux： How do I keep my laptop running when the lid is closed?

In short,

sudo vim /etc/systemd/logind.conf

Find and uncomment the following lines, and change the values

HandleLidSwitch=lock
HandleLidSwitchExternalPower=lock
HandleLidSwitchDocked=ignore

Save and exit, and 

sudo systemctl restart systemd-logind

How to show space and tabs with git-diff

git config diff.wsErrorHighlight all

Reference