Akhil-Suresh

Installing Postman

Step 1

If any version of postman is installed we need to remove it

sudo rm -rf /opt/Postman

Step 2

shamil

How to mount a qcow2 disk image

This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.

Step 1 - Enable NBD on the Host

modprobe nbd max_part=8

Changaco

#!/bin/bash
# btrfs-undelete
# Copyright (C) 2013 Jörg Walter <info@syntax-k.de>
# This program is free software; you can redistribute it and/or modify it under
# the term of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or any later version.

if [ ! -b "$1" -o -z "$2" -o -z "$3" ]; then
	echo "Usage: $0 <dev> <file/dir> <dest>" 1>&2
	echo

sinofool

# libssl1.1, the only missing mongodb dependency.
# I prefer enable oldstable in case this get backport security patches
echo "deb http://deb.debian.org/debian bullseye main" | sudo tee /etc/apt/sources.list.d/oldstable-bullseye.list

# MongoDB 4.4, [end of life Feb 2024](https://www.mongodb.com/support-policy/lifecycles)
curl -fsSL https://pgp.mongodb.com/server-4.4.asc | sudo gpg -o /usr/share/keyrings/mongodb-server-4.4.gpg --dearmor
echo "deb [ signed-by=/usr/share/keyrings/mongodb-server-4.4.gpg ] http://repo.mongodb.org/apt/debian buster/mongodb-org/4.4 main" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.4.list
sudo apt-get update && sudo apt-get install mongodb-org-server -y

# Unifi

benkulbertis

#!/bin/bash

# CHANGE THESE
auth_email="user@example.com"
auth_key="c2547eb745079dac9320b638f5e225cf483cc5cfdda41" # found in cloudflare account settings
zone_name="example.com"
record_name="www.example.com"

# MAYBE CHANGE THESE
ip=$(curl -s http://ipv4.icanhazip.com)

lifehome

Cloudflare DDNS bash client with systemd

This is a bash script to act as a Cloudflare DDNS client, useful replacement for ddclient.

Look out!

A newer version is available!

This gist will no longer update, instead please go to https://github.com/lifehome/systemd-cfddns for more updated versions.

How to use?

1. Put the cfupdater files to /usr/local/bin

• If you are using IPv4 for A record, append -v4 to cfupdater in the following systemd service unit.

vitali2y

Well, in hope to get more reliable and modern firmware on my Totolink A850R router from aliexpress.com I decided to upgrade it by TOTOLINK A850R-V1.0.2-20151104.zip from Totolink official site. So, I unpacked downloaded ZIP, started to upgrade the TOTOLINK-A850R-V1.0.2-B20151104.1609.web firmware from web admin panel, where the web form counted from 90 till 1 sec, after that page has been reloaded, I waited few more mins, and ... I figured out that my upgrade failed, with next "achievements":

• I cannot open the web admin panel http://192.168.1.1 from web browser anymore,
• both 5G and 2.4G WiFi do not work anymore, althought LAN/WAN works, i. e. my routed is not completely bricked,
• with using USB-to-RS232 TTL UART PL2303HX Auto Converter adapter I can reach RealTek bootloader console.

So,

elerch

Our goal here is to have one USB stick to rule them all. Objectives:

• We want a full system - not a live CD
• We want to boot this system on a Macbook Pro (requires UEFI)
• We want to boot this system on a Acer C720 Chromebook (requires Legacy BIOS support)
• We want the system "functional"

The last bullet is subject to interpretation, but I'm defining functional as:

• X Windows works (with LXDE)

andelf

#!/usr/bin/env escript
% -*- mode: erlang -*-

main([BeamFile]) ->
    {ok,{_,[{abstract_code,{_,AC}}]}} = beam_lib:chunks(BeamFile,[abstract_code]),
    io:fwrite("~s~n", [erl_prettypr:format(erl_syntax:form_list(AC))]).

betrcode

Using Python to check if remote port is open and accessible.

Taken from http://snipplr.com/view/19639/test-if-an-ipport-is-open/

Usage:

• Open a Python prompt
• Run the script in is_port_open.py
• Call isOpen with a host and a port parameter. Example: isOpen("www.google.com", 80)