papamoose

#!/bin/bash

ls -d /usr/src/linux-headers-* \
 | sed -e 's/.*linux-headers-//' \
 | grep generic \
 | sort -V \
 | tac \
 | sudo xargs -n1 /usr/lib/dkms/dkms_autoinstaller start

papamoose

FFmpeg cheat sheet

A list of useful commands for the ffmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

Basic conversion

papamoose

Summary

This is a script I made to check the health of the ZFS pools on my Ubuntu server and send a notification with a summary to a Discord server channel (see image of example notification below) I have made for my servers. I borrowed and modified some parts for the actual ZFS health check from this Gist. The script checks ZFS pools overall condition, capacity, errors and time since last scrub. If an issue is detected with a pool a role on the Discord channel is pinged.

This script is only tested on Ubuntu Server 20.04.

Instructions

Copy the two bash files to a Linux server with ZFS pools and modify as required based on distro/version. Fill inn the Discord variables in the discord-variables.sh file.

papamoose

#!/bin/bash

# See http://apple.stackexchange.com/questions/107307/how-can-i-install-the-command-line-tools-completely-from-the-command-line

echo "Checking Xcode CLI tools"
# Only run if the tools are not installed yet
# To check that try to print the SDK path
xcode-select -p &> /dev/null
if [ $? -ne 0 ]; then
  echo "Xcode CLI tools not found. Installing them..."

papamoose

version_cmp()

Simple function to (properly) compare version strings in bash

The problem

You can not do alphabetic comparison:

papamoose

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

papamoose

#!/usr/bin/python

# For mojave only
# In order for this to work, you will need to go to System Preferences in Mojave -> Security & Privacy -> Privacy -> Full Disk Access and grant Terminal.app permissions

import sqlite3
conn = sqlite3.connect('/var/db/SystemPolicyConfiguration/KextPolicy')
c = conn.cursor()
query = 'SELECT * FROM kext_policy'
c.execute(query)

papamoose

Add the following chunk to your existing ISC dhcpd.conf file.

if exists user-class and ( option user-class = "iPXE" ) {
    filename "http://boot.smidsrod.lan/boot.ipxe";
}
else {
    filename "undionly.kpxe";
}

(or see https://gist.github.com/4008017 for a more elaborate setup

papamoose

#install gcc git build-essential python3
$ sudo aptitude install gcc git build-essential python3

#from http://www.pip-installer.org/en/latest/installing.html
$ curl -O https://raw.github.com/pypa/virtualenv/master/virtualenv.py

$ mkdir python3_prole
$ cd python3_prole/
$ python virtualenv.py -p /usr/bin/python3 env
$ python virtualenv.py --relocatable -p /usr/bin/python3 env

papamoose

#!/usr/bin/env python

"""
Python functions for finding open files and PIDs that have opened a file.
"""

import numbers
import subprocess

try: