使用wget下载https协议的文件时遇到了这个问题，提示：

ERROR: cannot verify xx.xx.com's certificate, issued by `/C=BE/O=GlobalSign nv-sa/CN=GlobalSign Organization Validation CA - SHA256 - G2':
  Unable to locally verify the issuer's authority.
ERROR: certificate common name `*.alicdn.com' doesn't match requested host name `xx.xx.com'.
To connect to xx.xx.com insecurely, use `--no-check-certificate'.
无法建立 SSL 连接。

错误提示中建议使用“--no-check-certificate”参数，用法是这样的：

wget https://xx.xx.com/xx.exe --no-check-certificate

讲真的，英文不好，这个参数总记不住，想说wget是不是可以配置默认加上这个参数。
wget的配置文件叫“.wgetrc，直接将这个参数写进配置文件即可。

linux系统一般位于 ~/.wgetrc 或 /etc/wgetrc，快速写入配置文件：

echo --no-check-certificate >> ~/.wgetrc

windows位于 %userprofile%/.wgetrc，快速写入配置文件：

echo --no-check-certificate >> %userprofile%/.wgetrc

还能配置代理信息，例如：

#You can set the default proxies for Wget to use for http, https, and ftp.
# They will override the value in the environment.
https_proxy = http://127.0.0.1:8087/
http_proxy = http://127.0.0.1:8087/
ftp_proxy = http://127.0.0.1:8087/

# If you do not want to use proxy at all, set this to off.
use_proxy = on

一个简单的wgetrc文件示例
https://www.gnu.org/software/wget/manual/html_node/Sample-Wgetrc.html