从命令行下载.zip文件 [英] Download a .zip file from the command line

问题描述

我一直在盲目尝试许多 curl 和 wget 的变体，以尝试下载一些 .zip 文件。我尝试过的第一件事是这样的：

  curl --klo .\bhcdata＃1.zip https：/ /www.chicagofed.org/applications/bhc_data/bhcdata_create_output.cfm?DYR=2011&DQTR=[1-4] 
  

实际上，以上命令在芝加哥的文档中中提供美联储，但它在我的Ubuntu计算机上抛出错误消息： curl：option --klo：is c。

有一种简单的方法可以做到这一点吗？

要明确说明我要做什么：芝加哥联储网站可让您输入年份和季度，然后单击下载数据文件并为您提供相应数据的.zip文件。我想对所有季度执行此操作，因此我需要一种为每个季度编写命令的方法，以便可以遍历它们。上面的示例命令中的 [1-4] 会在一年中占据所有四个季度，但是一次只获得一个季度就可以了，也尝试替换 1 。我尝试了各种选项的组合，也没有进行组合，但是什么都没有。

解决方案

在我的机器上，以下命令工作得很好：

  curl -o ./bhcdata1.zip https://www.chicagofed.org/applications/bhc_data /bhcdata_create_output.cfm?DYR=2011&DQTR=1 
  

注意：

1. 单破折号而不是双破折号


2. 我只指定了输出文件-不带引号并且带有正斜杠


3. 我仅将URL简化为特定季度

我找到了一个名为 bhcdata1.zip ：

  -rw-r--r -1 floris floris 1545868 2月13日21:05 bhcdata1.zip 
  

您可能会发现需要 -k 标志也是如此……尽管我不需要在我的机器上。

  curl -ko ./bhcdata1.zip https://www.chicagofed.org/applications/bhc_data /bhcdata_create_output.cfm?DYR=2011&DQTR=1 
  

运作良好...

奖金要获得全部四个季度，您只需在脚本中放入以下几行即可。将其另存为 downloadAll 。使用 chmod 755 downloadAll 将文件更改为可执行，然后键入 ./ downloadAll 。享受……

 ＃！/ bin / bash 
 for {1..4} 
中的i 
 curl -ko ./bhcdata$i.zip https://www.chicagofed.org/applications/bhc_data/bhcdata_create_output.cfm?DYR=2011&DQTR=$i 
完成
  

结果：

  -rw-r--r-- 1 floris floris 1545868 2月13日21:11 bhcdata1.zip 
 -rw-r--r--1 floris floris 2413876 2月13日21:11 bhcdata2.zip 
 -rw-r--r-- 1弗洛里斯弗洛里斯1573810 2月13日21:11 bhcdata3.zip 
 -rw-r--r--r-- 1弗洛里斯弗洛里斯2500525 2月13日21:12 bhcdata4.zip 
  

如果您想要多年，可以做（的某些变体）

 ＃！/ bin / bash 
在{2010..2012}中的年度
对{1..4中的qtr做
 } 
做
 curl -ko ./bhcdata$yr_$qtr.zip https://www.chicagofed.org/applications/bhc_data/bhcdata_create_output.cfm?DYR=$yr&DQTR=$qtr  
完成
完成
  

I've been somewhat blindly trying lots of variations of curl and wget to try downloading some .zip files. The first thing I tried was this:

curl --klo ".\bhcdata#1.zip" "https://www.chicagofed.org/applications/bhc_data/bhcdata_create_output.cfm?DYR=2011&DQTR=[1-4]"

The command above is in fact provided in the documentation by the Chicago Fed, and yet it throws error messages on my Ubuntu machine: curl: option --klo: is unknown.

Is there a straightforward way to do this?

To clarify exactly what I'm trying to do: The Chicago Fed website lets you enter a year and quarter, and you click "Download data file" and it gives you a .zip file of the corresponding data. I want to do this for all quarters, so I need a way to write the command for each quarter so that I can loop over them. The [1-4] in the example command above would grab all four quarters in one year, but I'd be fine with just getting one quarter at a time, and I've tried replacing 1 as well. I've tried with and without various combinations of options, but nothing has worked yet.

解决方案

On my machine, the following command worked just fine:

curl -o ./bhcdata1.zip "https://www.chicagofed.org/applications/bhc_data/bhcdata_create_output.cfm?DYR=2011&DQTR=1"

Note:

1. single dash instead of double dash
2. I only specified the output file - with no quotes and with forward slash
3. I simplified the URL to a specific quarter only

I found a file named bhcdata1.zip in my directory when I was done:

-rw-r--r--   1 floris  floris    1545868 Feb 13 21:05 bhcdata1.zip

You might find you need the -k flag as well… although I didn't need to on my machine. Then it would be

curl -ko ./bhcdata1.zip "https://www.chicagofed.org/applications/bhc_data/bhcdata_create_output.cfm?DYR=2011&DQTR=1"

worked equally well...

BONUS to get all four quarters, you can simply put the following lines in a script. Save it as downloadAll. Change the file to "executable" with chmod 755 downloadAll , then type ./downloadAll. Enjoy…

#!/bin/bash
for i in {1..4}
do
  curl -ko ./bhcdata$i.zip "https://www.chicagofed.org/applications/bhc_data/bhcdata_create_output.cfm?DYR=2011&DQTR=$i"
done

Result:

-rw-r--r--   1 floris  floris    1545868 Feb 13 21:11 bhcdata1.zip
-rw-r--r--   1 floris  floris    2413876 Feb 13 21:11 bhcdata2.zip
-rw-r--r--   1 floris  floris    1573810 Feb 13 21:11 bhcdata3.zip
-rw-r--r--   1 floris  floris    2500525 Feb 13 21:12 bhcdata4.zip

and if you wanted multiple years, do (some variant of)

#!/bin/bash
for yr in {2010..2012}
do
  for qtr in {1..4}
  do
    curl -ko ./bhcdata$yr_$qtr.zip "https://www.chicagofed.org/applications/bhc_data/bhcdata_create_output.cfm?DYR=$yr&DQTR=$qtr"
  done
done

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