Mac OS 使用 sed 用一个字符替换多行

Question

I hope this is not duplicate, I read some questions, but I am still struggling to achieve this.

Let say i have this text:

{
  "root": {
    "2020-05": []
  }
}
{
  "root2": {
    "result": "error",
    "message": "You can't access this resource as it requires 'view' access for the website id = 206."
  }
}

How would I get the following result:

{
  "root": {
    "2020-05": []
  },
  "root2": {
    "result": "error",
    "message": "You can't access this resource as it requires 'view' access for the website id = 206."
  }
}

I need to replace

{
}

with just this

,

Or better I need to replace this

  }
}
{

with just this:

  },

What is the best way to achieve this using sed?

I am not sure about the regex part, I tried this /^{}$/ and this $}^${^ .

Thanks

Answer 1

With jq , it's just

jq -s add tmp.json

The -s option reads both objects in the stream into a single array, then the add filter combines the two objects into one.

A demonstration:

$ jq -s add <<EOF
> {
>   "root": {
>     "2020-05": []
>   }
> }
> {
>   "root2": {
>     "result": "error",
>     "message": "You can't access this resource as it requires 'view' access for the website id = 206."
>   }
> }
> EOF
{
  "root": {
    "2020-05": []
  },
  "root2": {
    "result": "error",
    "message": "You can't access this resource as it requires 'view' access for the website id = 206."
  }
}

Answer 2

jq can work but if you have the perl command you can also try:

perl -0777 -pe 's/}\n{/,/g' file.txt

See argument docs

• -0777 to read the whole file
• pe to evaluate what's in the quotes rather than a file, and loop it