lastwake.py

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Wake/Suspend Time SystemD Journal Analyzer [current boot]

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# lastwake.py
Wake/Sleep Time SystemD Journal Analyzer

**What it does:** Analyzes the system journal and prints out wake-up and sleep timestamps; for each cycle it tells whether the system was suspended to RAM or to disk (hibernated).

By default it will perform the analysis of wake-up/sleep cycles for the current boot, but also accepts a boot-id as an arguments (boot-id's can be obtained from: journalctl --list-boots)

## Requirements
This program requires:

1. The `libsystemd` development library. To get it:

In recent ubuntu versions:
    ```
    sudo apt install libsystemd-dev
    ```
    In fedora:
    ```
    sudo dnf install systemd-devel
    ```
  
1. And finally: `systemd-python` ([Github](https://github.com/systemd/python-systemd), [PyPI](https://pypi.python.org/pypi/systemd-python)). To get it:

```
    pip3 install -r requirements.txt
    ```

## Installation
1. Install the requirements above.
1. Create a symbolic link to the program in your **"~/bin"** dir:
    ```bash
    # create the ~/bin dir if it doesn't already exist
    mkdir -p ~/bin
    # change to this repository's "lastwake.py" **directory**
    cd path/to/lastwake.py
    # Create a symbolic link, named `lastwake`, to the Python executable inside the ~/bin dir
    ln -si "${PWD}/lastwake.py" ~/bin/lastwake
    ```
1. On Ubuntu, if this is the first time creating and using the ~/bin dir, log out and log back in to automatically add this dir to your PATH. If on another Linux system, do what is required to add the ~/bin dir to your PATH variable. Now you can call `lastwake` from anywhere in your terminal.

## Usage

lastwake [-h] [-b BOOT_ID] [-s] [bootId]

### Examples

lastwake

lastwake --boot-id afdffb7dae61404abb5506ebf10ee2ac

lastwake afdffb7dae61404abb5506ebf10ee2ac

## Sample Output

>     Wake/Sleep Time SystemD Journal Analyzer
>     
>      Boot under analysis: selected boot = afdffb7dae61404abb5506ebf10ee2ac
>      Initial Boot Timestamp:  2017-07-06 11:23:42
>     
>        Wake Timestamp    |   Sleep Timestamp   | Awake Time | Wake From
>      ------------------- | ------------------- | ---------- | ---------
>      2017-02-20 09:22:17 | 2017-02-20 09:52:18 |    0h 30m  | Cold Boot
>      2017-02-20 10:27:13 | 2017-02-20 10:49:26 |    0h 22m  | S4 (disk)
>      2017-02-20 10:50:50 | 2017-02-20 11:03:16 |    0h 12m  | S4 (disk)
>      2017-02-20 21:51:55 | 2017-02-20 22:41:44 |    0h 49m  | S4 (disk)
>      2017-02-20 22:42:10 |    (Still Awake)    |    0h  1m  | S3 (RAM) 
>      ------------------- | ------------------- | ---------- | --------- 
>     
>     Days Since Boot: 0.51 - Days Awake: 0.09 - Wake/Sleep Cycles: 4

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