jc.parsers.last
jc - JSON Convert last
and lastb
command output parser
Supports -w
, -F
, and -x
options.
Calculated epoch time fields are naive (i.e. based on the local time of the
system the parser is run on) since there is no timezone information in the
last
command output.
Usage (cli):
$ last | jc --last
or
$ jc last
Usage (module):
import jc
result = jc.parse('last', last_command_output)
Schema:
[
{
"user": string,
"tty": string,
"hostname": string,
"login": string,
"logout": string,
"duration": string,
"login_epoch": integer, # (naive) available w/last -F option
"logout_epoch": integer, # (naive) available w/last -F option
"duration_seconds": integer # available w/last -F option
}
]
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"
},
...
]
parse
def parse(data, raw=False, quiet=False)
Main text parsing function
Parameters:
data: (string) text data to parse
raw: (boolean) unprocessed output if True
quiet: (boolean) suppress warning messages if True
Returns:
List of Dictionaries. Raw or processed structured data.
Parser Information
Compatibility: linux, darwin, aix, freebsd
Source: jc/parsers/last.py
Version 1.9 by Kelly Brazil (kellyjonbrazil@gmail.com)