curl：（60）SSL证书问题：自签名证书

Question

我想在我的 Linux 计算机上安装 nvm。 （我的 Debian 版本是 10。）

我阅读了这份文件https://github.com/nvm-sh/nvm#install--update-script 我输入了这个脚本。

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash

这是结果。

 % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
curl: (60) SSL certificate problem: self signed certificate in certificate chain
More details here: https://curl.haxx.se/docs/sslcerts.html

curl failed to verify the legitimacy of the server and therefore could not
establish a secure connection to it. To learn more about this situation and
how to fix it, please visit the web page mentioned above.

我阅读了这份文档https://curl.haxx.se/docs/sslcerts.html，但我不明白该怎么做。于是上网一搜，发现需要代理配置。

export http_proxy="http://webfilter.**********.com:8000/"
export https_proxy="http://webfilter.**********.com:8000/"

我在终端中输入了这些命令并再次尝试了这个脚本。

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash

然后我得到相同的结果。

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
curl: (60) SSL certificate problem: self signed certificate in certificate chain
More details here: https://curl.haxx.se/docs/sslcerts.html

curl failed to verify the legitimacy of the server and therefore could not
establish a secure connection to it. To learn more about this situation and
how to fix it, please visit the web page mentioned above.

我该如何解决这个问题？

Answer 1

发现我需要代理配置。

在调用之前先检查您是否确实需要任何代理。
For instance（未导出代理）：

curl -Is http://www.google.com | head -1 | grep 200; if [[ $? -eq 0 ]]; then; echo "Online"; else; echo "Offline"; fi

如果可行，那么问题就不同了。
如果没有，请使用您的代理重试。