JC Version 1.11.1 Released

I’m happy to announce the release of jc version 1.11.1 available on github and pypi.

jc now supports over 50 commands and file-types and now can be installed via Homebrew (macOS) and zypper (OpenSUSE). In addition, jc can now be installed via DEB and RPM packages or run as a single binary on linux or macOS. You can set your own custom colors for jc to display and more command parsers are supported on macOS. See below for more information on the new features.

To upgrade, run:

$ pip3 install --upgrade jc

RPM/DEB packages and Binaries can also be found here.

OS package repositories (e.g. brew, zypper, etc.) will be updated with the latest version of jc on their own future release schedules.

New Features

  • jc now supports custom colors. You can customize the colors by setting the JC_COLORS environment variable.
  • jc is now available on macOS via Homebrew (brew install jc)
  • jc is now available on OpenSUSE via zypper
  • DEB, RPM, and Binary packages are now available for linux and macOS
  • Several back-end updates to support packaging on standard linux distribution package repositories in the future (e.g. Fedora)

New Parsers

jc now supports 51 parsers. The dmidecode command is now supported for linux platforms.

Documentation and schemas for all parsers can be found here.

dmidecode command parser

Linux support for the dmidecode command:

# jc -p dmidecode
[
  {
    "handle": "0x0000",
    "type": 0,
    "bytes": 24,
    "description": "BIOS Information",
    "values": {
      "vendor": "Phoenix Technologies LTD",
      "version": "6.00",
      "release_date": "04/13/2018",
      "address": "0xEA490",
      "runtime_size": "88944 bytes",
      "rom_size": "64 kB",
      "characteristics": [
        "ISA is supported",
        "PCI is supported",
        "PC Card (PCMCIA) is supported",
        "PNP is supported",
        "APM is supported",
        "BIOS is upgradeable",
        "BIOS shadowing is allowed",
        "ESCD support is available",
        "Boot from CD is supported",
        "Selectable boot is supported",
        "EDD is supported",
        "Print screen service is supported (int 5h)",
        "8042 keyboard services are supported (int 9h)",
        "Serial services are supported (int 14h)",
        "Printer services are supported (int 17h)",
        "CGA/mono video services are supported (int 10h)",
        "ACPI is supported",
        "Smart battery is supported",
        "BIOS boot specification is supported",
        "Function key-initiated network boot is supported",
        "Targeted content distribution is supported"
      ],
      "bios_revision": "4.6",
      "firmware_revision": "0.0"
    }
  },
  ...
]

Updated Parsers

The netstat command is now supported on macOS:

$ jc -p netstat
[
  {
    "proto": "tcp4",
    "recv_q": 0,
    "send_q": 0,
    "local_address": "mylaptop.local",
    "foreign_address": "173.199.15.254",
    "state": "SYN_SENT   ",
    "kind": "network",
    "local_port": "57561",
    "foreign_port": "https",
    "transport_protocol": "tcp",
    "network_protocol": "ipv4",
    "local_port_num": 57561
  },
  {
    "proto": "tcp4",
    "recv_q": 0,
    "send_q": 0,
    "local_address": "mylaptop.local",
    "foreign_address": "192.0.71.3",
    "state": "ESTABLISHED",
    "kind": "network",
    "local_port": "57525",
    "foreign_port": "https",
    "transport_protocol": "tcp",
    "network_protocol": "ipv4",
    "local_port_num": 57525
  },
  ...
]

The netstat parser has been enhanced to support the -r (routes) and -i (interfaces) options on both linux and macOS.

$ jc -p netstat -r
[
  {
    "destination": "default",
    "gateway": "router.local",
    "route_flags": "UGSc",
    "route_refs": 102,
    "use": 24,
    "iface": "en0",
    "kind": "route"
  },
  {
    "destination": "127",
    "gateway": "localhost",
    "route_flags": "UCS",
    "route_refs": 0,
    "use": 0,
    "iface": "lo0",
    "kind": "route"
  },
  ...
]
$ jc -p netstat -i
[
  {
    "iface": "lo0",
    "mtu": 16384,
    "network": "<Link#1>",
    "address": null,
    "ipkts": 1777797,
    "ierrs": 0,
    "opkts": 1777797,
    "oerrs": 0,
    "coll": 0,
    "kind": "interface"
  },
  {
    "iface": "lo0",
    "mtu": 16384,
    "network": "127",
    "address": "localhost",
    "ipkts": 1777797,
    "ierrs": null,
    "opkts": 1777797,
    "oerrs": null,
    "coll": null,
    "kind": "interface"
  },
  {
    "iface": "lo0",
    "mtu": 16384,
    "network": "localhost",
    "address": "::1",
    "ipkts": 1777797,
    "ierrs": null,
    "opkts": 1777797,
    "oerrs": null,
    "coll": null,
    "kind": "interface"
  },
  ...
]

The stat command is now supported on macOS.

$ jc -p stat jc*
[
  {
    "file": "jc-1.11.1-linux.sha256",
    "device": "16778221",
    "inode": 82163627,
    "flags": "-rw-r--r--",
    "links": 1,
    "user": "joeuser",
    "group": "staff",
    "rdev": 0,
    "size": 69,
    "access_time": "May 26 08:27:44 2020",
    "modify_time": "May 24 18:47:25 2020",
    "change_time": "May 24 18:51:21 2020",
    "birth_time": "May 24 18:47:25 2020",
    "block_size": 4096,
    "blocks": 8,
    "osx_flags": "0"
  },
  {
    "file": "jc-1.11.1-linux.tar.gz",
    "device": "16778221",
    "inode": 82163628,
    "flags": "-rw-r--r--",
    "links": 1,
    "user": "joeuser",
    "group": "staff",
    "rdev": 0,
    "size": 20226936,
    "access_time": "May 26 08:27:44 2020",
    "modify_time": "May 24 18:47:25 2020",
    "change_time": "May 24 18:47:25 2020",
    "birth_time": "May 24 18:47:25 2020",
    "block_size": 4096,
    "blocks": 39512,
    "osx_flags": "0"
  },
  ...
]

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
  • dmidecode
  • 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!

Published by kellyjonbrazil

I'm a cybersecurity and cloud computing nerd.

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