参考：
https://www.marcusfolkesson.se/blog/what-time-is-it/
https://samanpavel.medium.com/time-zones-tz-database-and-linux-8dd9d451caa4
https://data.iana.org/time-zones/tz-how-to.html

网上看到的方法，收集一下。
所谓别名就是同一个邮箱，但是地址形式可以多种，以方便多注册……

比如 [email protected] 这个邮箱：

• 第一种方式：加点

  [email protected]
  [email protected]
  [email protected]
  [email protected]
  [email protected]
  [email protected]

  这样全是别名

• 第二种： +后面随便加

  [email protected]
  [email protected]
  [email protected]

  这样随便加都是别名，说添加+的有些网站不识别，具体可以自己测试

• 第三种：大小写

  [email protected]
  [email protected]
  [email protected]

  这样也算是别名
  理论上面三种方式可以生成无限个邮箱出来

• 第四种：直接修改@gmail.com改为@googlemail.com

所有邮件接受到[email protected] 这个邮箱

在旧电脑里发现这个软件：

怀念那时的软件不用一堆的在线功能，小巧精焊，压缩完不到2M。

链接分享：TTPlayer.zip

Ubuntu 22.04.1默认采用systemd-resolved作为DNS维护服务，其生成的/etc/resolv.conf文件内容如下：

# This is /run/systemd/resolve/resolv.conf managed by man:systemd-resolved(8).
# Do not edit.
#
# This file might be symlinked as /etc/resolv.conf. If you're looking at
# /etc/resolv.conf and seeing this text, you have followed the symlink.
#
# This is a dynamic resolv.conf file for connecting local clients directly to
# all known uplink DNS servers. This file lists all configured search domains.
#
# Third party programs should typically not access this file directly, but only
# through the symlink at /etc/resolv.conf. To manage man:resolv.conf(5) in a
# different way, replace this symlink by a static file or a different symlink.
#
# See man:systemd-resolved.service(8) for details about the supported modes of
# operation for /etc/resolv.conf.

nameserver 192.168.1.1
search .

如果需要修改DNS服务器，则修改文件/etc/systemd/resolved.conf中的DNS字段，示例:

#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it under the
#  terms of the GNU Lesser General Public License as published by the Free
#  Software Foundation; either version 2.1 of the License, or (at your option)
#  any later version.
#
# Entries in this file show the compile time defaults. Local configuration
# should be created by either modifying this file, or by creating "drop-ins" in
# the resolved.conf.d/ subdirectory. The latter is generally recommended.
# Defaults can be restored by simply deleting this file and all drop-ins.
#
# Use 'systemd-analyze cat-config systemd/resolved.conf' to display the full config.
#
# See resolved.conf(5) for details.

[Resolve]
# Some examples of DNS servers which may be used for DNS= and FallbackDNS=:
# Cloudflare: 1.1.1.1#cloudflare-dns.com 1.0.0.1#cloudflare-dns.com 2606:4700:4700::1111#cloudflare-dns.com 2606:4700:4700::1001#cloudflare-dns.com
# Google:     8.8.8.8#dns.google 8.8.4.4#dns.google 2001:4860:4860::8888#dns.google 2001:4860:4860::8844#dns.google
# Quad9:      9.9.9.9#dns.quad9.net 149.112.112.112#dns.quad9.net 2620:fe::fe#dns.quad9.net 2620:fe::9#dns.quad9.net
DNS=223.6.6.6 119.29.29.29
#FallbackDNS=
#Domains=
#DNSSEC=no
#DNSOverTLS=no
#MulticastDNS=no
#LLMNR=no
#Cache=no-negative
#CacheFromLocalhost=no
#DNSStubListener=yes
#DNSStubListenerExtra=
#ReadEtcHosts=yes
#ResolveUnicastSingleLabel=no

再重启服务生效：

sudo systemctl restart systemd-resolved