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jc/docs/parsers/last.md

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# 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
```python
info()
```
## process
```python
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
```python
parse(data, raw=False, quiet=False)
```
Main text parsing function
Parameters:
data: (string) text data to parse
raw: (boolean) output preprocessed JSON if True
quiet: (boolean) suppress warning messages if True
Returns:
List of Dictionaries. Raw or processed structured data.