kashu: 3月12日 World Day Against Cyber Censorship(世界反对网络审查日)
https://getadblock.com/amnesty2016why/ https://en.wikipedia.org/wiki/World_Day_Against_Cyber_Censorship
kashu: Disown, removes the job from the process job list of the system, so the process is shielded from being killed during session disconnection as it won’t receive SIGHUP by the shell when you logout.