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README.md

JC

JSON CLI output utility

jc is used to JSONify the output of many standard linux cli tools for easier parsing in scripts. See the Parsers section for supported commands.

This allows further command line processing of output with tools like jq simply by piping commands:

$ ls -l /usr/bin | jc --ls | jq '.[] | select(.size|tonumber > 50000000)'
{
  "filename": "emacs",
  "flags": "-r-xr-xr-x",
  "links": "1",
  "owner": "root",
  "group": "wheel",
  "size": "117164432",
  "date": "May 3 22:26"
}

The jc parsers can also be used as python modules. In this case the output will be a python dictionary instead of JSON:

>>> import jc.parsers.ls
>>> 
>>> data='''-rwxr-xr-x  1 root  wheel    23648 May  3 22:26 cat
... -rwxr-xr-x  1 root  wheel    30016 May  3 22:26 chmod
... -rwxr-xr-x  1 root  wheel    29024 May  3 22:26 cp
... -rwxr-xr-x  1 root  wheel   375824 May  3 22:26 csh
... -rwxr-xr-x  1 root  wheel    28608 May  3 22:26 date
... -rwxr-xr-x  1 root  wheel    32000 May  3 22:26 dd
... -rwxr-xr-x  1 root  wheel    23392 May  3 22:26 df
... -rwxr-xr-x  1 root  wheel    18128 May  3 22:26 echo'''
>>> 
>>> jc.parsers.ls.parse(data)
[{'filename': 'cat', 'flags': '-rwxr-xr-x', 'links': '1', 'owner': 'root', 'group': 'wheel',
'size': '23648', 'date': 'May 3 22:26'}, {'filename': 'chmod', 'flags': '-rwxr-xr-x',
'links': '1', 'owner': 'root', 'group': 'wheel', 'size': '30016', 'date': 'May 3 22:26'},
{'filename': 'cp', 'flags': '-rwxr-xr-x', 'links': '1', 'owner': 'root', 'group': 'wheel',
'size': '29024', 'date': 'May 3 22:26'}, {'filename': 'csh', 'flags': '-rwxr-xr-x', 'links': '1', 
'owner': 'root', 'group': 'wheel', 'size': '375824', 'date': 'May 3 22:26'}, {'filename': 'date',
'flags': '-rwxr-xr-x', 'links': '1', 'owner': 'root', 'group': 'wheel', 'size': '28608',
'date': 'May 3 22:26'}, {'filename': 'dd', 'flags': '-rwxr-xr-x', 'links': '1', 'owner': 'root',
'group': 'wheel', 'size': '32000', 'date': 'May 3 22:26'}, {'filename': 'df', 'flags': '-rwxr-xr-x',
'links': '1', 'owner': 'root', 'group': 'wheel', 'size': '23392', 'date': 'May 3 22:26'}, 
{'filename': 'echo', 'flags': '-rwxr-xr-x', 'links': '1', 'owner': 'root', 'group': 'wheel',
'size': '18128', 'date': 'May 3 22:26'}]

The goal is to keep the resulting JSON as flat and simple as possible. Also, keys have been converted to lowercase and special characters are replaced whenever possible. Numbers are kept as strings because, depending on context or the output options, numbers can sometimes turn into strings. (e.g 'human readable' options)

Installation

$ pip3 install --upgrade jc

Usage

jc PARSER [OPTIONS]

jc accepts piped input from STDIN and outputs a JSON representation of the previous command's output to STDOUT. The JSON output can be compact or pretty formatted.

Parsers

  • --df enables the df parser
  • --env enables the env parser
  • --free enables the free parser
  • --history enables the history parser
  • --ifconfig enables the ifconfig parser
  • --iptables enables the iptables parser
  • --jobs enables the jobs parser
  • --ls enables the ls parser
  • --lsblk enables the lsblk parser
  • --lsmod enables the lsmod parser
  • --lsof enables the lsof parser
  • --mount enables the mount parser
  • --netstat enables the netstat parser
  • --ps enables the ps parser
  • --route enables the route parser
  • --uname enables the uname -a parser
  • --uptime enables the uptime parser
  • --w enables the w parser

Options

  • -p specifies whether to pretty format the JSON output

Examples

df

$ df | jc --df -p
[
  {
    "filesystem": "udev",
    "1k-blocks": "977500",
    "used": "0",
    "available": "977500",
    "use_percent": "0%",
    "mounted": "/dev"
  },
  {
    "filesystem": "tmpfs",
    "1k-blocks": "201732",
    "used": "1204",
    "available": "200528",
    "use_percent": "1%",
    "mounted": "/run"
  },
  {
    "filesystem": "/dev/sda2",
    "1k-blocks": "20508240",
    "used": "5748312",
    "available": "13695124",
    "use_percent": "30%",
    "mounted": "/"
  },
  {
    "filesystem": "tmpfs",
    "1k-blocks": "1008648",
    "used": "0",
    "available": "1008648",
    "use_percent": "0%",
    "mounted": "/dev/shm"
  }
  ...
]

env

$ env | jc --env -p
{
  "TERM": "xterm-256color",
  "SHELL": "/bin/bash",
  "USER": "root",
  "PATH": "/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin",
  "PWD": "/root",
  "LANG": "en_US.UTF-8",
  "HOME": "/root",
  "LOGNAME": "root",
  "_": "/usr/bin/env"
}

free

$ free | jc --free -p
[
  {
    "type": "Mem",
    "total": "2017300",
    "used": "213104",
    "free": "1148452",
    "shared": "1176",
    "buff_cache": "655744",
    "available": "1622204"
  },
  {
    "type": "Swap",
    "total": "2097148",
    "used": "0",
    "free": "2097148"
  }
]

history

$ history | jc --history -p
{
  "n118": "sleep 100",
  "n119": "ls /bin",
  "n120": "echo \"hello\"",
  "n121": "docker images",
  ...
}

ifconfig

$ ifconfig | jc --ifconfig -p
[
  {
    "name": "docker0",
    "flags": "4099",
    "state": "UP,BROADCAST,MULTICAST",
    "mtu": "1500",
    "ipv4_addr": "172.17.0.1",
    "ipv4_mask": "255.255.0.0",
    "ipv4_bcast": "0.0.0.0",
    "mac_addr": "02:42:53:18:31:cc",
    "type": "Ethernet",
    "rx_packets": "0",
    "rx_errors": "0",
    "rx_dropped": "0",
    "rx_overruns": "0",
    "rx_frame": "0",
    "tx_packets": "0",
    "tx_errors": "0",
    "tx_dropped": "0",
    "tx_overruns": "0",
    "tx_carrier": "0",
    "tx_collisions": "0",
    "ipv6_addr": null,
    "ipv6_mask": null,
    "ipv6_scope": null,
    "metric": null
  },
  {
    "name": "ens33",
    "flags": "4163",
    "state": "UP,BROADCAST,RUNNING,MULTICAST",
    "mtu": "1500",
    "ipv4_addr": "192.168.71.135",
    "ipv4_mask": "255.255.255.0",
    "ipv4_bcast": "192.168.71.255",
    "ipv6_addr": "fe80::c1cb:715d:bc3e:b8a0",
    "ipv6_mask": "64",
    "ipv6_scope": "link",
    "mac_addr": "00:0c:29:3b:58:0e",
    "type": "Ethernet",
    "rx_packets": "26348",
    "rx_errors": "0",
    "rx_dropped": "0",
    "rx_overruns": "0",
    "rx_frame": "0",
    "tx_packets": "5308",
    "tx_errors": "0",
    "tx_dropped": "0",
    "tx_overruns": "0",
    "tx_carrier": "0",
    "tx_collisions": "0",
    "metric": null
  },
  {
    "name": "lo",
    "flags": "73",
    "state": "UP,LOOPBACK,RUNNING",
    "mtu": "65536",
    "ipv4_addr": "127.0.0.1",
    "ipv4_mask": "255.0.0.0",
    "ipv4_bcast": null,
    "ipv6_addr": "::1",
    "ipv6_mask": "128",
    "ipv6_scope": "host",
    "mac_addr": null,
    "type": "Local Loopback",
    "rx_packets": "64",
    "rx_errors": "0",
    "rx_dropped": "0",
    "rx_overruns": "0",
    "rx_frame": "0",
    "tx_packets": "64",
    "tx_errors": "0",
    "tx_dropped": "0",
    "tx_overruns": "0",
    "tx_carrier": "0",
    "tx_collisions": "0",
    "metric": null
  }
]

iptables

$ sudo iptables -L -t nat | jc --iptables -p
[
  {
    "chain": "PREROUTING",
    "rules": [
      {
        "target": "PREROUTING_direct",
        "prot": "all",
        "opt": "--",
        "source": "anywhere",
        "destination": "anywhere"
      },
      {
        "target": "PREROUTING_ZONES_SOURCE",
        "prot": "all",
        "opt": "--",
        "source": "anywhere",
        "destination": "anywhere"
      },
      {
        "target": "PREROUTING_ZONES",
        "prot": "all",
        "opt": "--",
        "source": "anywhere",
        "destination": "anywhere"
      },
      {
        "target": "DOCKER",
        "prot": "all",
        "opt": "--",
        "source": "anywhere",
        "destination": "anywhere",
        "options": "ADDRTYPE match dst-type LOCAL"
      }
    ]
  },
  {
    "chain": "INPUT",
    "rules": []
  },
  {
    "chain": "OUTPUT",
    "rules": [
      {
        "target": "OUTPUT_direct",
        "prot": "all",
        "opt": "--",
        "source": "anywhere",
        "destination": "anywhere"
      },
      {
        "target": "DOCKER",
        "prot": "all",
        "opt": "--",
        "source": "anywhere",
        "destination": "!loopback/8",
        "options": "ADDRTYPE match dst-type LOCAL"
      }
    ]
  },
  ...
]

$ sudo iptables -vnL -t filter | jc --iptables -p
[
  {
    "chain": "INPUT",
    "rules": [
      {
        "pkts": "1571",
        "bytes": "3394K",
        "target": "ACCEPT",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0",
        "options": "ctstate RELATED,ESTABLISHED"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "ACCEPT",
        "prot": "all",
        "opt": "--",
        "in": "lo",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0"
      },
      {
        "pkts": "711",
        "bytes": "60126",
        "target": "INPUT_direct",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0"
      },
      {
        "pkts": "711",
        "bytes": "60126",
        "target": "INPUT_ZONES_SOURCE",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0"
      },
      {
        "pkts": "711",
        "bytes": "60126",
        "target": "INPUT_ZONES",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "DROP",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0",
        "options": "ctstate INVALID"
      },
      {
        "pkts": "710",
        "bytes": "60078",
        "target": "REJECT",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0",
        "options": "reject-with icmp-host-prohibited"
      }
    ]
  },
  {
    "chain": "FORWARD",
    "rules": [
      {
        "pkts": "0",
        "bytes": "0",
        "target": "DOCKER-ISOLATION",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "DOCKER",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "docker0",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "ACCEPT",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "docker0",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0",
        "options": "ctstate RELATED,ESTABLISHED"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "ACCEPT",
        "prot": "all",
        "opt": "--",
        "in": "docker0",
        "out": "!docker0",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "ACCEPT",
        "prot": "all",
        "opt": "--",
        "in": "docker0",
        "out": "docker0",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "ACCEPT",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0",
        "options": "ctstate RELATED,ESTABLISHED"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "ACCEPT",
        "prot": "all",
        "opt": "--",
        "in": "lo",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "FORWARD_direct",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "FORWARD_IN_ZONES_SOURCE",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "FORWARD_IN_ZONES",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "FORWARD_OUT_ZONES_SOURCE",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "FORWARD_OUT_ZONES",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "DROP",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0",
        "options": "ctstate INVALID"
      },
      {
        "pkts": "0",
        "bytes": "0",
        "target": "REJECT",
        "prot": "all",
        "opt": "--",
        "in": "*",
        "out": "*",
        "source": "0.0.0.0/0",
        "destination": "0.0.0.0/0",
        "options": "reject-with icmp-host-prohibited"
      }
    ]
  },
  ...
]

jobs

$ jobs -l | jc --jobs -p
[
  {
    "job_number": "1",
    "pid": "19510",
    "status": "Running",
    "command": "sleep 1000 &"
  },
  {
    "job_number": "2",
    "pid": "19511",
    "status": "Running",
    "command": "sleep 1001 &"
  },
  {
    "job_number": "3",
    "pid": "19512",
    "history": "previous",
    "status": "Running",
    "command": "sleep 1002 &"
  },
  {
    "job_number": "4",
    "pid": "19513",
    "history": "current",
    "status": "Running",
    "command": "sleep 1003 &"
  }
]

ls

$ ls -l /usr/bin | jc --ls -p
[
  {
    "filename": "apropos",
    "link_to": "whatis",
    "flags": "lrwxrwxrwx.",
    "links": "1",
    "owner": "root",
    "group": "root",
    "size": "6",
    "date": "Aug 15 10:53"
  },
  {
    "filename": "arch",
    "flags": "-rwxr-xr-x.",
    "links": "1",
    "owner": "root",
    "group": "root",
    "size": "33080",
    "date": "Aug 19 23:25"
  },
  {
    "filename": "awk",
    "link_to": "gawk",
    "flags": "lrwxrwxrwx.",
    "links": "1",
    "owner": "root",
    "group": "root",
    "size": "4",
    "date": "Aug 15 10:53"
  },
  {
    "filename": "base64",
    "flags": "-rwxr-xr-x.",
    "links": "1",
    "owner": "root",
    "group": "root",
    "size": "37360",
    "date": "Aug 19 23:25"
  },
  {
    "filename": "basename",
    "flags": "-rwxr-xr-x.",
    "links": "1",
    "owner": "root",
    "group": "root",
    "size": "29032",
    "date": "Aug 19 23:25"
  },
  {
    "filename": "bash",
    "flags": "-rwxr-xr-x.",
    "links": "1",
    "owner": "root",
    "group": "root",
    "size": "964600",
    "date": "Aug 8 05:06"
  },
  ...
]

lsblk

$ lsblk | jc --lsblk -p
[
  {
    "name": "sda",
    "maj_min": "8:0",
    "rm": "0",
    "size": "20G",
    "ro": "0",
    "type": "disk"
  },
  {
    "name": "sda1",
    "maj_min": "8:1",
    "rm": "0",
    "size": "1G",
    "ro": "0",
    "type": "part",
    "mountpoint": "/boot"
  },
  {
    "name": "sda2",
    "maj_min": "8:2",
    "rm": "0",
    "size": "19G",
    "ro": "0",
    "type": "part"
  },
  {
    "name": "centos-root",
    "maj_min": "253:0",
    "rm": "0",
    "size": "17G",
    "ro": "0",
    "type": "lvm",
    "mountpoint": "/"
  },
  {
    "name": "centos-swap",
    "maj_min": "253:1",
    "rm": "0",
    "size": "2G",
    "ro": "0",
    "type": "lvm",
    "mountpoint": "[SWAP]"
  },
  {
    "name": "sr0",
    "maj_min": "11:0",
    "rm": "1",
    "size": "1024M",
    "ro": "0",
    "type": "rom"
  }
]

lsmod

$ lsmod | jc --lsmod -p
[
  ...
  {
    "module": "nf_conntrack",
    "size": "139224",
    "used": "7",
    "by": [
      "nf_nat",
      "nf_nat_ipv4",
      "nf_nat_ipv6",
      "xt_conntrack",
      "nf_nat_masquerade_ipv4",
      "nf_conntrack_ipv4",
      "nf_conntrack_ipv6"
    ]
  },
  {
    "module": "ip_set",
    "size": "45799",
    "used": "0"
  },
  {
    "module": "nfnetlink",
    "size": "14519",
    "used": "1",
    "by": [
      "ip_set"
    ]
  },
  {
    "module": "ebtable_filter",
    "size": "12827",
    "used": "1"
  },
  {
    "module": "ebtables",
    "size": "35009",
    "used": "2",
    "by": [
      "ebtable_nat",
      "ebtable_filter"
    ]
  },
  ...
]

lsof

$ sudo lsof | jc --lsof -p | more
[
  {
    "command": "systemd",
    "pid": "1",
    "tid": null,
    "user": "root",
    "fd": "cwd",
    "type": "DIR",
    "device": "8,2",
    "size_off": "4096",
    "node": "2",
    "name": "/"
  },
  {
    "command": "systemd",
    "pid": "1",
    "tid": null,
    "user": "root",
    "fd": "rtd",
    "type": "DIR",
    "device": "8,2",
    "size_off": "4096",
    "node": "2",
    "name": "/"
  },
  {
    "command": "systemd",
    "pid": "1",
    "tid": null,
    "user": "root",
    "fd": "txt",
    "type": "REG",
    "device": "8,2",
    "size_off": "1595792",
    "node": "668802",
    "name": "/lib/systemd/systemd"
  },
  {
    "command": "systemd",
    "pid": "1",
    "tid": null,
    "user": "root",
    "fd": "mem",
    "type": "REG",
    "device": "8,2",
    "size_off": "1700792",
    "node": "656167",
    "name": "/lib/x86_64-linux-gnu/libm-2.27.so"
  },
  {
    "command": "systemd",
    "pid": "1",
    "tid": null,
    "user": "root",
    "fd": "mem",
    "type": "REG",
    "device": "8,2",
    "size_off": "121016",
    "node": "655394",
    "name": "/lib/x86_64-linux-gnu/libudev.so.1.6.9"
  },
  ...
]

mount

$ mount | jc --mount -p
[
  {
    "filesystem": "sysfs",
    "mount_point": "/sys",
    "type": "sysfs",
    "access": [
      "rw",
      "nosuid",
      "nodev",
      "noexec",
      "relatime"
    ]
  },
  {
    "filesystem": "proc",
    "mount_point": "/proc",
    "type": "proc",
    "access": [
      "rw",
      "nosuid",
      "nodev",
      "noexec",
      "relatime"
    ]
  },
  {
    "filesystem": "udev",
    "mount_point": "/dev",
    "type": "devtmpfs",
    "access": [
      "rw",
      "nosuid",
      "relatime",
      "size=977500k",
      "nr_inodes=244375",
      "mode=755"
    ]
  },
  ...
]

netstat

$ netstat -p | jc --netstat -p
[
  {
    "transport_protocol": "tcp",
    "network_protocol": "ipv4",
    "local_address": "localhost.localdo",
    "local_port": "34480",
    "foreign_address": "lb-192-30-255-113",
    "foreign_port": "https",
    "state": "ESTABLISHED",
    "pid": "53550",
    "program_name": "git-remote-ht",
    "receive_q": "0",
    "send_q": "0"
  },
  {
    "transport_protocol": "tcp",
    "network_protocol": "ipv4",
    "local_address": "localhost.localdo",
    "local_port": "34478",
    "foreign_address": "lb-192-30-255-113",
    "foreign_port": "https",
    "state": "ESTABLISHED",
    "pid": "53550",
    "program_name": "git-remote-ht",
    "receive_q": "0",
    "send_q": "0"
  }
]

$ sudo netstat -lpn | jc --netstat -p
[
  {
    "transport_protocol": "tcp",
    "network_protocol": "ipv4",
    "local_address": "127.0.0.1",
    "local_port": "25",
    "foreign_address": "0.0.0.0",
    "foreign_port": "*",
    "state": "LISTEN",
    "pid": "1584",
    "program_name": "master",
    "receive_q": "0",
    "send_q": "0"
  },
  {
    "transport_protocol": "tcp",
    "network_protocol": "ipv4",
    "local_address": "0.0.0.0",
    "local_port": "22",
    "foreign_address": "0.0.0.0",
    "foreign_port": "*",
    "state": "LISTEN",
    "pid": "1213",
    "program_name": "sshd",
    "receive_q": "0",
    "send_q": "0"
  },
  {
    "transport_protocol": "tcp",
    "network_protocol": "ipv6",
    "local_address": "::1",
    "local_port": "25",
    "foreign_address": "::",
    "foreign_port": "*",
    "state": "LISTEN",
    "pid": "1584",
    "program_name": "master",
    "receive_q": "0",
    "send_q": "0"
  },
  {
    "transport_protocol": "udp",
    "network_protocol": "ipv4",
    "local_address": "0.0.0.0",
    "local_port": "68",
    "foreign_address": "0.0.0.0",
    "foreign_port": "*",
    "pid": "19177",
    "program_name": "dhclient",
    "receive_q": "0",
    "send_q": "0"
  },
  ...
]

ps

$ ps -ef | jc --ps -p
[
  ...
  {
    "uid": "root",
    "pid": "545",
    "ppid": "1",
    "c": "0",
    "stime": "Oct21",
    "tty": "?",
    "time": "00:00:03",
    "cmd": "/usr/lib/systemd/systemd-journald"
  },
  {
    "uid": "root",
    "pid": "566",
    "ppid": "1",
    "c": "0",
    "stime": "Oct21",
    "tty": "?",
    "time": "00:00:00",
    "cmd": "/usr/sbin/lvmetad -f"
  },
  {
    "uid": "root",
    "pid": "580",
    "ppid": "1",
    "c": "0",
    "stime": "Oct21",
    "tty": "?",
    "time": "00:00:00",
    "cmd": "/usr/lib/systemd/systemd-udevd"
  },
  {
    "uid": "root",
    "pid": "659",
    "ppid": "2",
    "c": "0",
    "stime": "Oct21",
    "tty": "?",
    "time": "00:00:00",
    "cmd": "[kworker/u257:0]"
  },
  {
    "uid": "root",
    "pid": "666",
    "ppid": "2",
    "c": "0",
    "stime": "Oct21",
    "tty": "?",
    "time": "00:00:00",
    "cmd": "[hci0]"
  },
  ...
]

route

$ route | jc --route -p
[
  {
    "destination": "default",
    "gateway": "gateway",
    "genmask": "0.0.0.0",
    "flags": "UG",
    "metric": "100",
    "ref": "0",
    "use": "0",
    "iface": "ens33"
  },
  {
    "destination": "172.17.0.0",
    "gateway": "0.0.0.0",
    "genmask": "255.255.0.0",
    "flags": "U",
    "metric": "0",
    "ref": "0",
    "use": "0",
    "iface": "docker0"
  },
  {
    "destination": "192.168.71.0",
    "gateway": "0.0.0.0",
    "genmask": "255.255.255.0",
    "flags": "U",
    "metric": "100",
    "ref": "0",
    "use": "0",
    "iface": "ens33"
  }
]

uname -a

$ uname -a | jc --uname -p
{
  "kernel_name": "Linux",
  "node_name": "user-ubuntu",
  "kernel_release": "4.15.0-65-generic",
  "operating_system": "GNU/Linux",
  "hardware_platform": "x86_64",
  "processor": "x86_64",
  "machine": "x86_64",
  "kernel_version": "#74-Ubuntu SMP Tue Sep 17 17:06:04 UTC 2019"
}

uptime

$ uptime | jc --uptime -p
{
  "time": "16:52",
  "uptime": "3 days, 4:49",
  "users": "5",
  "load_1m": "1.85",
  "load_5m": "1.90",
  "load_15m": "1.91"
}

w

$ w | jc --w -p
[
  {
    "user": "root",
    "tty": "ttyS0",
    "from": "-",
    "login_at": "Mon20",
    "idle": "0.00s",
    "jcpu": "14.70s",
    "pcpu": "0.00s",
    "what": "bash"
  },
  {
    "user": "root",
    "tty": "pts/0",
    "from": "192.168.71.1",
    "login_at": "Thu22",
    "idle": "22:46m",
    "jcpu": "0.05s",
    "pcpu": "0.05s",
    "what": "-bash"
  }
]

Contributions

Feel free to add/improve code or parsers!

Compatibility

Tested on:

  • Centos 7.7
  • Ubuntu 18.4

Acknowledgments

Description
CLI tool and python library that converts the output of popular command-line tools, file-types, and common strings to JSON, YAML, or Dictionaries. This allows piping of output to tools like jq and simplifying automation scripts.
bashbash-scriptingclicommand-linecommand-line-interfacecommand-line-toolconvertjsonlinuxparserspythonpython-libraryscriptingserializeshell-scriptingyaml
Readme 27 MiB
Languages
Python 99%
Shell 1%