herbetom

Install NixOS on Oracle Cloud over Ubuntu 18.04

# install useful tools
sudo apt-get update
sudo apt-get install --no-install-recommends -y nano mc git

# prepare /boot
sudo umount /boot/efi
sudo mv /boot /boot.bak

herbetom

Markdown Code Formatting

Sending code, logs, or commands in a Markdown-enabled chat client (Element, Gitter, Mattermost, Rocket.Chat and probably others) without using code styling makes messages more cluttered than necessary.

Using it is actually relatively simple, and the effect is quite visible:

Code Blocks

Simple Code Block

```

herbetom

Tested on Debian 10.2

mkdir /opt/matrix-synapse/
cd /opt/matrix-synapse/
wget https://raw.githubusercontent.com/matrix-org/synapse/master/contrib/docker/docker-compose.yml

Inside the docker-compose.yml i changed the port config to - 8008:8008/tcp since i will let a nginx proxy handle the ssl stuff.

herbetom

#!/bin/sh
# basiert auf https://github.com/FreiFunkMuenster/tools/blob/master/signieren.sh
# benötigt:
#   - sshfs
#   - ecdsautils (https://github.com/tcatm/ecdsautils)
#   - sign.sh und sigtest.sh aus dem Gluon Repo (https://github.com/freifunk-gluon/gluon/tree/master/contrib)
#     herunterladen und am besten in /usr/bin ablegen. Dann ausführbar machen.
#     wget https://raw.githubusercontent.com/freifunk-gluon/gluon/master/contrib/sign.sh
#     wget https://raw.githubusercontent.com/freifunk-gluon/gluon/master/contrib/sigtest.sh

herbetom

#!/bin/bash

# inspired by https://github.com/elkarbackup/elkarbackup-scripts/tree/master/backup-mysql
# access to the nexecloud-DB from the user doing the backup via mysqldump must be granted somehow

URL=`echo $ELKARBACKUP_URL | cut -d ":" -f1`    # user@serverip
USER="${URL%@*}"                                # user
HOST="${URL#*@}"                                # host
DIR=`echo $ELKARBACKUP_URL | cut -d ":" -f2`    # path
DIR=$DIR"/sqlbkp"                               # path inside the main backup folder

herbetom

# Mikrotik RouterOS autoUpdate Script to perform an automatic 
# should be run periodically. Therefore you can use the Scheduler
# E-Mail must be configured prior. Some explanation can be found
# here https://wiki.mikrotik.com/wiki/Manual:Tools/email#Properties

:local mailto "sysinfo@example.org"

/log info message="Update  Checking for new Updates."
/system package update
check-for-updates once

herbetom

# Mikrotik RouterOS Backup Script based on
# http://adminlog.eu/mikrotik-automated-backup/
# but changed to send E-Mails instead of an FTP upload
# E-Mail must be configured prior. Some explanation can be found
# here https://wiki.mikrotik.com/wiki/Manual:Tools/email#Properties

:local mailto "mail@example.org"

# start backup
 /log info message="Backup  Configuration backup started."

herbetom

HOWTO Run 32 Bit Assembler within WSL (Windows Subsystem for Linux)

Running a 32bit Binary within WSL can be complicated, because at the moment WSL only runs ELF-64 binaries.

Installation of WSL is described here (docs.microsoft.com)

sudo apt update
sudo apt upgrade
apt install build-essential gcc-multilib