jc

jc converts the output of many standard unix command line tools and file-types to dictionaries and lists of dictionaries.

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Documentation

• Documentation [EN]

Further Information

• Episode 341 - Long Term Rolling (18.02.2020) [EN] @ LINUX Unplugged

Syntax

COMMAND | jc [PARAMETER ...] PARSER
jc [PARAMETER ...] COMMAND

Parameters

-p, --pretty

Pretty format the JSON output.

-q, --quiet

Quiet mode. Suppresses parser warning messages.

-r, --raw

Raw output. Provides more literal output, typically with string values and no additional semantic processing.

-y, --yaml-out

YAML output

Examples

Convert the ARP cache list to JSON with jc, remove some attributes and output it nicely with jq

arp -a | jc --arp | jq 'del(.[].name, .[].permanent)'

Output:

[
  {
    "address": "10.0.0.1",
    "hwtype": "ethernet",
    "hwaddress": "0:0:5e:0:1:1",
    "iface": "en9"
  },
  {
    "address": "10.0.0.6",
    "hwtype": "ethernet",
    "hwaddress": "b8:69:f4:1:70:b1",
    "iface": "en9"
  }
]