Shell脚本将5个或更多json文件连接在一起 [英] Shell script to join 5 or more json files together

问题描述

我正在一个项目中，该项目在一个大文件中包含很多json文档，可以将其称为manifest.json

I am working on a project that has a lot of json documents in a large file lets call it manifest.json

文件的标题如

a-11.json

a-11.json

{"id":"a-11",
 "name":"XN0",
  "code":"H3A8FF82820F"
  "status":"live"
} 

a-03.json

a-03.json

{"id":"a-03",
 "name":"PF1",
  "code":"FFFF82820F"
  "status":"live"
}

a-09.json

a-09.json

{"id":"a-09",
 "name":"PF1",
 "code":"FFFF82820F"
 "status":"live"
} 

我想要shell脚本执行的操作是按alpha顺序将它们全部连接起来，我还需要像这样包装它们: [ {json doc}， {json doc}， {json doc ] 用方括号括起来的方括号，使它看起来像下面的代码-

What I want a shell script to do is to concatenate them all in alpha order and I am also need to wrap them like this: [ {json doc}, {json doc}, {json doc ] with a sq bracket seperated with a , so that it looks like the code below-

join命令仅连接两个文件，因此无法正常工作，我尝试了cat和ls的组合，但都出错了.我试图在这里使用Linux环境而不是MS环境.

The join command only connects two files so thats not going to work and I have tried a combination of cat and ls but it all goes a bit wrong. I am trying to use the Linux environment rather than the MS environment here.

manifest.json

manifest.json

[
{"id":"a-03",
 "name":"PF1",
  "code":"FFFF82820F"
  "status":"live"
},
{"id":"a-09",
 "name":"PF1",
  "code":"FFFF82820F"
  "status":"live"
}, 
{"id":"a-11",
 "name":"XN0",
  "code":"H3A8FF82820F"
  "status":"live"
}

]

命令

cat a-*.json > manifest.json

为我提供以下内容，并在顶部显示a-11.json文档，感谢您的帮助.

Gives me the following with the a-11.json doc at the top, any help appreciated.

[
{"id":"a-11",
 "name":"XN0",
  "code":"H3A8FF82820F"
  "status":"live"
}
{"id":"a-03",
 "name":"PF1",
  "code":"FFFF82820F"
  "status":"live"
},
{"id":"a-09",
 "name":"PF1",
  "code":"FFFF82820F"
  "status":"live"
}, 

]

推荐答案

使用以下 bash 脚本(它使用并非所有shell都标准的数组):

Use the following bash script (it uses arrays which aren't standard across all shells):

#!/bin/bash

shopt -s nullglob
declare -a jsons
jsons=(a-*.json) # ${jsons[@]} now contains the list of files to concatenate
echo '[' > manifest.json
if [ ${#jsons[@]} -gt 0 ]; then # if the list is not empty
  cat "${jsons[0]}" >> manifest.json # concatenate the first file to the manifest...
  unset jsons[0]                     # and remove it from the list
  for f in "${jsons[@]}"; do         # iterate over the rest
      echo "," >>manifest.json
      cat "$f" >>manifest.json
  done
fi
echo ']' >>manifest.json             # complete the manifest

这篇关于Shell脚本将5个或更多json文件连接在一起的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！