nightsparc

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#

nightsparc

#!/bin/bash

if [ $# -ne 1 ]; then
        echo "Usage: $0 <submodule full name>"
        exit 1
fi

MODULE_NAME=$1
MODULE_NAME_FOR_SED=$(echo $MODULE_NAME | sed -e 's/\//\\\//g')

nightsparc

To change a git submodule's remote (in this case, from HTTPS to SSH):

SUB=my-submodule-name
$REMOTE=git@gitlab.com:path/to/remote.git

git submodule deinit $SUB
git rm $SUB
git commit -m "removed $SUB submodule at https remote"

rm -rf .git/modules/$SUB

nightsparc

#!/bin/bash
# Sometimes you need to move your existing git repository
# to a new remote repository (/new remote origin).
# Here are a simple and quick steps that does exactly this.
#
# Let's assume we call "old repo" the repository you wish
# to move, and "new repo" the one you wish to move to.
#
### Step 1. Make sure you have a local copy of all "old repo"
### branches and tags.

nightsparc

#!/bin/bash
# To add two items to the current .gitignore file:
# gitignore '*.swp' bin
#
# To sort and de-dupe the current .gitignore file:
# gitignore

# Append each argument to its own line:
for item in "$@"; do
    echo "$item" >> .gitignore;

nightsparc

' Usage: terminator[.vbs] [path to starting directory]
'        contents enclosed in square brackets optional

args = "-c" & " -l " & """DISPLAY=:0 terminator"""

' If there's a single argument, interpret it as the starting directory
If WScript.Arguments.Count = 1 Then
  dir = WScript.Arguments(0)
Else
  dir = ""

nightsparc

bash

login	interactive	files
N	N	$BASH_ENV
N	Y	~/.bashrc
Y	N	/etc/profile, ~/.bash_profile, ~/.bash_login, ~/.profile
Y	Y	/etc/profile, ~/.bash_profile, ~/.bash_login, ~/.profile

nightsparc

Virtual Serial Ports

We can use socat to create 2 virtual serial ports that are connected to each other locally. This can be useful for debugging serial port applications. Or simulating serial port communication. Or running 2 legacy programs that only communicate with each other over serial ports, such as old DOS games. And of course, for education, since serial communication is probably the most simple communication protocol there is, RS232 is considered at the bottom of the OSI stack, at the "Physical Layer". See: http://electronics.stackexchange.com/questions/31171/internet-vs-serial-communication

nightsparc

#!/bin/sh

MODEM="$(mmcli -L | grep -o '/org/freedesktop/ModemManager1/Modem/[0-9]*' | head -1)"
BEARER="$(mmcli -m $MODEM --list-bearers | grep -o '/org/freedesktop/ModemManager1/Bearer/[0-9]*' | head -1)"

mkdir -p /run/systemd/network
connect() {
  MODEM="$(mmcli -L | grep -o '/org/freedesktop/ModemManager1/Modem/[0-9]*' | head -1)"

  # hardcode all the things !! (this is for mobile vikings)

nightsparc

#include <X11/Xlib.h>
#include <stdio.h>
#include <stdlib.h>
 
int main()
{
    Display *display;
    Window window;
    XEvent event;
    int s;