在外壳程序脚本中使用jq

Question

Suspect it's a newbie mistake that I'm making, but in an attempt to parse a json such as

{"current_observation": {"observation_time": "Last Updated on July 4, 12:53 PM CDT" } }

from within a script such as

#!/bin/sh

jq '.' test.json

I get an error response from ./test.sh as follows

syntax error, unexpected INVALID_CHARACTER, expecting $end '.'1 compile error

Now if I do a jq '.' test.json from the command line in terminal, it performs as expected, but when attempting to use it within a script it fails as detailed.

Anyone able to point out my error?

Answer 1

I can reproduce your error with this script:

#!/bin/sh   
jq \'.\' test.json

I think you just need to get rid of the quotes around the . Although it works fine for me with unescaped quotes.

Try it just like this:

#!/bin/sh   
jq . test.json

It might be related to this bug report for jq. (although probably not as it works for you on the command line)

Answer 2

Comma produces the error. You should quote it:

{"current_observation": {"observation_time": "Last Updated on July 4\u002c 12:53 PM CDT" } }

Test:

$ jq '.' temp.txt 
{
  "current_observation": {
    "observation_time": "Last Updated on July 4, 12:53 PM CDT"
  }
}