wget与curl指令下载url文件记录部署项目时碰到的问题，需求是需要在ubuntu服务器上安装pandoc软件，找到

记录部署项目时碰到的问题
需求是需要在ubuntu服务器上安装pandoc软件，找到github上对应的release。

复制出下载链接，使用如下curl指令下载，下载过程没有报错，但查看文件大小发现居然为0，这明显不正常。

news_yu@SZ-YUXINWEN-L1:~$ curl -O https://github.com/jgm/pandoc/releases/download/3.1.6.1/pandoc-3.1.6.1-1-arm64.deb
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
  
news_yu@SZ-YUXINWEN-L1:~$ ls -al
-rw-r--r--  1 news_yu news_yu       0 Aug 18 11:50 pandoc-3.1.6.1-1-arm64.deb

换一种方式，使用wget工具下载发现可以成功下载，查看下载日志发现访问源url，302了，重定向到另一个url。对于重定向wget自动处理了，curl失败了是不是因为没有处理重定向？

news_yu@SZ-YUXINWEN-L1:~$ wget https://github.com/jgm/pandoc/releases/download/3.1.6.1/pandoc-3.1.6.1-1-arm64.deb
--2023-08-18 11:53:06--  https://github.com/jgm/pandoc/releases/download/3.1.6.1/pandoc-3.1.6.1-1-arm64.deb
Resolving github.com (github.com)... 20.205.243.166
Connecting to github.com (github.com)|20.205.243.166|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://objects.githubusercontent.com/github-production-release-asset-2e65be/571770/6c16279c-6bca-4df0-98f3-adc29379f77d?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIWNJYAX4CSVEH53A%2F20230818%2Fus-east-1%2Fs3%2F
aws4_request&X-Amz-Date=20230818T035306Z&X-Amz-Expires=300&X-Amz-Signature=678a96912f4dbdd0919f12ca7153cdfb4ba1a9c3931f614b598d12adf1feb71f&X-Amz-SignedHeaders=host&actor_id=0&key_id=0&repo_id=571770&response-content-disposition=att
achment%3B%20filename%3Dpandoc-3.1.6.1-1-arm64.deb&response-content-type=application%2Foctet-stream [following]
--2023-08-18 11:53:06--  https://objects.githubusercontent.com/github-production-release-asset-2e65be/571770/6c16279c-6bca-4df0-98f3-adc29379f77d?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIWNJYAX4CSVEH53A%2F20230818%2Fus
-east-1%2Fs3%2Faws4_request&X-Amz-Date=20230818T035306Z&X-Amz-Expires=300&X-Amz-Signature=678a96912f4dbdd0919f12ca7153cdfb4ba1a9c3931f614b598d12adf1feb71f&X-Amz-SignedHeaders=host&actor_id=0&key_id=0&repo_id=571770&response-content-
disposition=attachment%3B%20filename%3Dpandoc-3.1.6.1-1-arm64.deb&response-content-type=application%2Foctet-stream
Resolving objects.githubusercontent.com (objects.githubusercontent.com)... 185.199.108.133, 185.199.109.133, 185.199.111.133, ...
Connecting to objects.githubusercontent.com (objects.githubusercontent.com)|185.199.108.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 33263992 (32M) [application/octet-stream]
Saving to: ‘pandoc-3.1.6.1-1-arm64.deb.1’

pandoc-3.1.6.1-1-arm64.deb.1                              100%[=====================================================================================================================================>]  31.72M  4.42MB/s    in 5.8s

2023-08-18 11:53:12 (5.51 MB/s) - ‘pandoc-3.1.6.1-1-arm64.deb.1’ saved [33263992/33263992]

那怎么验证这个猜想？遇事不决问AI。

加个-L参数重新试一下，成功解决问题

news_yu@SZ-YUXINWEN-L1:~/venv$ curl -OL https://github.com/jgm/pandoc/releases/download/3.1.6.1/pandoc-3.1.6.1-1-amd64.deb
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100 29.1M  100 29.1M    0     0  3480k      0  0:00:08  0:00:08 --:--:-- 5668k