Adjust json file using ConvertFrom-Json-CodePudding

I have a json file with the following content

{
    "name":"myApp",
    "version":"1"
}

I would like to use Powershell to read this json file, adjust the version number, then output the new json to the same file.

I currently have this, but it doesn't work and only outputs an empty file

Get-Content file.json | ConvertFrom-Json | ForEach{$_.version = "2"} | ConvertTo-Json |  Out-File file.json -Encoding ascii

I am getting stuck on how to update values on the Json object created by ConvertFrom-Json and pipe this back into ConvertTo-Json

I would like to do this all in one line if possible.

CodePudding user response：

Once you assign the JSON to an object, you should be able to change it from there then write it to a file (if desired).

Create JSON object from file contents:

$jsonObject = Get-Content file.json -Raw |  ConvertFrom-Json

Change the current object. In your example the "version" property:

#update object
$jsonObject| %{$_.version = "2"}

Write object to file:

$jsonObject | ConvertTo-Json | Out-File "file.json" -Encoding ascii