JC Version 1.9.0 Released

Try the jc web demo!

I’m happy to announce the release of jc version 1.9.0 available on github and pypi. See below for more information on the new features and parsers.

To upgrade, run:

$ pip3 install --upgrade jc

jc In The News!

The Linux Unplugged podcast gave a shoutout to jc on their February 18, 2020 episode for their App Pick segment. The discussion starts at 45:47. Go check out the podcast!

New Parsers

jc now includes 50 parsers! New parsers (tested on linux and OSX) include airport -I, airport -s, file, ntpq -p, and timedatectl commands.

Documentation and schemas for all parsers can be found here.

airport -I command parser

OSX support for the airport -I command:

$ airport -I | jc --airport -p          # or:  jc -p airport -I
{
  "agrctlrssi": -66,
  "agrextrssi": 0,
  "agrctlnoise": -90,
  "agrextnoise": 0,
  "state": "running",
  "op_mode": "station",
  "lasttxrate": 195,
  "maxrate": 867,
  "lastassocstatus": 0,
  "802_11_auth": "open",
  "link_auth": "wpa2-psk",
  "bssid": "3c:37:86:15:ad:f9",
  "ssid": "SnazzleDazzle",
  "mcs": 0,
  "channel": "48,80"
}

airport -s command parser

OSX support for the airport -s command.

$ airport -s | jc --airport-s -p          or: jc -p airport -s
[
  {
    "ssid": "DIRECT-4A-HP OfficeJet 3830",
    "bssid": "00:67:eb:2a:a7:3b",
    "rssi": -90,
    "channel": "6",
    "ht": true,
    "cc": "--",
    "security": [
      "WPA2(PSK/AES/AES)"
    ]
  },
  {
    "ssid": "Latitude38",
    "bssid": "c0:ff:d5:d2:7a:f3",
    "rssi": -85,
    "channel": "11",
    "ht": true,
    "cc": "US",
    "security": [
      "WPA2(PSK/AES/AES)"
    ]
  },
  {
    "ssid": "xfinitywifi",
    "bssid": "6e:e3:0e:b8:45:99",
    "rssi": -83,
    "channel": "11",
    "ht": true,
    "cc": "US",
    "security": [
      "NONE"
    ]
  },
  ...
]

file command parser

Linux and OSX support for the file command:

$ file * | jc --file -p          or:  jc -p file *
[
  {
    "filename": "Applications",
    "type": "directory"
  },
  {
    "filename": "another file with spaces",
    "type": "empty"
  },
  {
    "filename": "argstest.py",
    "type": "Python script text executable, ASCII text"
  },
  {
    "filename": "blkid-p.out",
    "type": "ASCII text"
  },
  {
    "filename": "blkid-pi.out",
    "type": "ASCII text, with very long lines"
  },
  {
    "filename": "cd_catalog.xml",
    "type": "XML 1.0 document text, ASCII text, with CRLF line terminators"
  },
  {
    "filename": "centosserial.sh",
    "type": "Bourne-Again shell script text executable, UTF-8 Unicode text"
  },
  ...
]

ntpq command parser

Linux support for the ntpq -p command.

$ ntpq -p | jc --ntpq -p          # or:  jc -p ntpq -p
[
  {
    "remote": "44.190.6.254",
    "refid": "127.67.113.92",
    "st": 2,
    "t": "u",
    "when": 1,
    "poll": 64,
    "reach": 1,
    "delay": 23.399,
    "offset": -2.805,
    "jitter": 2.131,
    "state": null
  },
  {
    "remote": "mirror1.sjc02.s",
    "refid": "216.218.254.202",
    "st": 2,
    "t": "u",
    "when": 2,
    "poll": 64,
    "reach": 1,
    "delay": 29.325,
    "offset": 1.044,
    "jitter": 4.069,
    "state": null
  }
]

timedatectl command parser

Linux support for the timedatectl command:

$ timedatectl | jc --timedatectl -p          # or:  jc -p timedatectl
{
  "local_time": "Tue 2020-03-10 17:53:21 PDT",
  "universal_time": "Wed 2020-03-11 00:53:21 UTC",
  "rtc_time": "Wed 2020-03-11 00:53:21",
  "time_zone": "America/Los_Angeles (PDT, -0700)",
  "ntp_enabled": true,
  "ntp_synchronized": true,
  "rtc_in_local_tz": false,
  "dst_active": true
}

Updated Parsers

No updated parsers in this release.

Schema Changes

There are no schema changes in this release.

Full Parser List

• airport -I
• airport -s
• arp
• blkid
• crontab
• crontab-u
• CSV
• df
• dig
• du
• env
• file
• free
• fstab
• /etc/group
• /etc/gshadow
• history
• /etc/hosts
• id
• ifconfig
• INI
• iptables
• jobs
• last and lastb
• ls
• lsblk
• lsmod
• lsof
• mount
• netstat
• ntpq
• /etc/passwd
• pip list
• pip show
• ps
• route
• /etc/shadow
• ss
• stat
• systemctl
• systemctl list-jobs
• systemctl list-sockets
• systemctl list-unit-files
• timedatectl
• uname -a
• uptime
• w
• who
• XML
• YAML

For more information on the motivations for creating jc, see my blog post.

Happy parsing!