Store output diskspace df -h JSON

Question

I am attempting to gather basic disk space information from a server using a bash script, and store the output in JSON format. I am looking to record the available & use

Answer 1

Xidel, together with some XQuery magic can do what you want (I used your df -h output).

df -h | xidel -s - --xquery '
  {
    "diskarray":[
      for $x in x:lines($raw)[starts-with(.,"/")]
      let $a:=tokenize($x,"\s+")
      return {
        "mount":$a[1],
        "spacetotal":$a[2],
        "spaceavail":$a[4]
      }
    ]
  }
'
{
  "diskarray": [
    {
      "mount": "/dev/mapper/nodequery--vg-root",
      "spacetotal": "45G",
      "spaceavail": "41G"
    },
    {
      "mount": "/dev/sda2",
      "spacetotal": "237M",
      "spaceavail": "178M"
    },
    {
      "mount": "/dev/sda1",
      "spacetotal": "511M",
      "spaceavail": "508M"
    }
  ]
}