jc.parsers.last

jc - JSON CLI output utility last and lastb command output parser

Supports -w and -F options.

Usage (cli):

$ last | jc --last

or

$ jc last

Usage (module):

import jc.parsers.last
result = jc.parsers.last.parse(last_command_output)

Compatibility:

'linux', 'darwin', 'aix', 'freebsd'

Examples:

$ last -F | jc --last -p
[
  {
    "user": "kbrazil",
    "tty": "ttys002",
    "hostname": null,
    "login": "Mon Dec 28 17:24:10 2020",
    "logout": "still logged in"
  },
  {
    "user": "kbrazil",
    "tty": "ttys003",
    "hostname": null,
    "login": "Mon Dec 28 17:24:10 2020",
    "logout": "Mon Dec 28 17:25:01 2020",
    "duration": "00:00",
    "login_epoch": 1565891826,
    "logout_epoch": 1565895404,
    "duration_seconds": 3578
  },
  {
    "user": "kbrazil",
    "tty": "ttys003",
    "hostname": null,
    "login": "Mon Dec 28 17:24:10 2020",
    "logout": "Mon Dec 28 17:25:01 2020",
    "duration": "00:00",
    "login_epoch": 1565891826,
    "logout_epoch": 1565895404,
    "duration_seconds": 3578
  },
  ...
]

$ last | jc --last -p -r
[
  {
    "user": "kbrazil",
    "tty": "ttys002",
    "hostname": "-",
    "login": "Thu Feb 27 14:31",
    "logout": "still_logged_in"
  },
  {
    "user": "kbrazil",
    "tty": "ttys003",
    "hostname": "-",
    "login": "Thu Feb 27 10:38",
    "logout": "10:38",
    "duration": "00:00"
  },
  {
    "user": "kbrazil",
    "tty": "ttys003",
    "hostname": "-",
    "login": "Thu Feb 27 10:18",
    "logout": "10:18",
    "duration": "00:00"
  },
  ...
]

info

info()

process

process(proc_data)

Final processing to conform to the schema.

Parameters:

proc_data:   (List of Dictionaries) raw structured data to process

Returns:

List of Dictionaries. Structured data with the following schema:

[
  {
    "user":             string,
    "tty":              string,
    "hostname":         string,
    "login":            string,
    "logout":           string,
    "duration":         string,
    "login_epoch":      integer,   # available with last -F option
    "logout_epoch":     integer,   # available with last -F option
    "duration_seconds": integer    # available with last -F option
  }
]

parse

parse(data, raw=False, quiet=False)

Main text parsing function