如何从命令行美丽打印JSON？ （从文件） [英] How can I pretty-print JSON from the command line? (from a file)

问题描述

我有一个json元素序列的文件：

I've a file with a sequence of json element:

{ element0: "lorem", value0: "ipsum" }
{ element1: "lorem", value0: "ipsum" }
...
{ elementN: "lorem", value0: "ipsum" }

是否有一个shell脚本来格式化JSON以便以可读的形式显示文件内容？

Is there a shell script to format JSON to display file content in a readable form?

我看过

I've seen this post, and I think is a good starting point!

我的想法是迭代文件中的行，然后：

My idea is to iterate rows in the file and then:

while read row; do echo ${row} | python -mjson.tool; done < "file_name"

有没有其他想法？

推荐答案

有很多。我个人有这个别名在我的 .zshrc

There are a bunch of them. I personally have this alias in my .zshrc

pjson () {
        ~/bin/pjson.py | less -X
}

其中 pjson.py 是

#!/usr/bin/env python

import json
import sys

try:
    input_str = sys.stdin.read()
    print json.dumps(json.loads(input_str), sort_keys = True, indent = 2)
except ValueError,e:
    print "Couldn't decode \n %s \n Error : %s"%(input_str, str(e))

允许我在命令行中使用它作为管道（类似 curl http：// ... 。| pjson ）。

Allows me to use that in a command line as a pipe (something like curl http://.... | pjson).

OTOH，自定义代码是一种责任，因此有 jq ，对我来说看起来像黄金标准。它是用C语言编写的（因此是可移植的，没有依赖项，如Python或Node），不仅仅是漂亮的打印，而且快速。

OTOH, Custom code is a liability so there's jq, which to me looks like the gold standard. It's written in C (and is hence portable with no dependencies like Python or Node), does much more than just pretty printing and is fast.

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