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#HappyNewYear2024
Happy new Year to all my readers! God Bless!
Hope you have a great one! Cheers! 🙂
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Increase OS Disk Size of an Azure Linux VM
If you try to expand the disk without stopping/de-allocating the VM, depending on disk config it may not allow your to change the size and a banner with message “Changes to the disk size can be made only when the disk is unattached or the managing virtual machine(s) are deallocated.” would be displayed. To increase the disk size of a Linux VM, you can perform the following:
In my environment, the…
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#azure cli#Changes to the disk size can be made only when the disk is unattached or the managing virtual machine(s) are deallocated.#resize os disk
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Password protect file using 7z in Linux from the terminal
This is a short post on how to password protect a file using 7z in Linux from the terminal.
Below is the sample command that encrypts file “file.txt” with password (Replace PASSWORD with your pass) and saves to encrypted zip file Protected.zip
7z a Protected.zip -pPASSWORD file.txt
Credits/References:
Stackoverflow
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Install MacOS Ventura on Proxmox 8.x
This is a guide on how to configure and install MacOS Ventura on Promox 8.x.x. (This was tested in my lab which runs Proxmox 8.0.3 and 8.0.4. It should work for other versions as well)
Requirements:
Proxmox 8.x.x
Opencore ISO [ Link: https://github.com/thenickdude/KVM-Opencore/releases . https://github.com/thenickdude/KVM-Opencore/releases/tag/v20%5D
MacOS Ventura ISO (You can get this from…
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Enable promiscuous mode in VMware Workstation
Enable promiscuous mode in VMware Workstation
Below are the steps to enable promiscuous mode for a VM in Vmware Workstation.
Shutdown the VM and edit the .vmx file. This is in the directory where your VM’s hard disks were configured to be sure.
vim /home/extr3me/vmware/pfsense/pfsense.vmx
Tip:
You can right click on the VM and select option “Open VM Directory” that will take you to the directory where the .vmx file is located.
Add the below…
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Setup Wireguard VPN Server and Client in Linux (Ubuntu / Linux Mint)
Setup Wireguard VPN Server and Client in Linux (Ubuntu / Linux Mint)
This a guide on setting up Wireguard Server on Ubuntu and setting up a Wireguard client.
Requirements:
1. Ubuntu Server 20.04 used in my lab. (20.04 or higher is required for Policy routing)
2. Ubuntu Client (Ubuntu 20.04)
3. Root access to the server.
4. Network Access
Note: This should also work on Linux Mint 20.04
Setting up the Wireguard Server
Login to the In my lab, I have set up a EC2…
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#HappyNewYear2022
Happy new Year to all! Stay Safe. God Bless!
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Install Signal Desktop and setup the tray for i3-gaps [Linux Mint / Ubuntu]
Install Signal Desktop and setup the tray for i3-gaps [Linux Mint /Â Ubuntu]
This is post on installing + setting up Signal Desktop application on an i3 / i3-gaps setup and enabling signal’s tray icon on your status bar.
Requirements:
1. Linux Mint/Ubuntu [This was tested on Linux Mint 20.2 ]
2. Window Manager – i3 or i3-gaps [ I am using i3-gaps ]
3. i3-bar / py3status
4. Signal Desktop Linux [ Ref: https://signal.org/download ]
Section 1: Install Signal Desktop
1.…
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Hexadecimal basics using basic Linux utilities
Hexadecimal basics using basic Linux utilities
This is short guide on converting between strings / decimal values to hexadecimal using simple Linux utilities such as xxd and printf.
To convert a string to hexadecimal, you can use xxd in Linux.
For example: To convert a string “kali” to hexadecimal, you can use the below format.
extr3me@op3n:~$ echo -n kali | xxd
00000000: 6b61 6c69 kali
To group and display the output a single character…
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How to fix "Error opening terminal: xterm-termite" when trying to SSH to a remote host
How to fix “Error opening terminal: xterm-termite” when trying to SSH to a remote host
I am using “termite” on my ArchLinux machine but when I try to SSH to a remote linux machine(Ubuntu) to run some commands, it throws me an error “Error opening terminal: xterm-termite“. This a post on how to fix it.
Quick Fix:
If you are already SSH’ed into the remote machine and you see this issue, you couldupdate the TERM variable on the remote system: (Run on remote system)
export…
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GDB basics with C
GDB basics with C
This is a beginner level tutorial on learning basics of reverse engineering using GDB and C programming language. No prior C programming experience is needed. This is blog post highly adapted from recurse’s original gdb turtorial. (Credits added at the end of the article for reference)
Requirements:
Any Linux x64 OS. (Linux Mint 20 used in this tutorial)
C compiler – gcc
gdb – for debugging /…
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Filter top using process name in Linux
Filter top using process name in Linux
To display statistics only for a process name that match a string using top, you could use the following:
top -c -p $(pgrep -d',' -f firefox)
Here is a screenshot which only shows stats for firefox:
Hope this helps!
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Decoding IR Signals of a Blue Star Air Conditioner using an Arduino
Decoding IR Signals of a Blue Star Air Conditioner using an Arduino
This is part of my project to understand the IR protocol and try to decode IR signals that being send from my AC’s remote to the AC itself. So that the idea is: If I can figure out the different IR signals that being that transmitted, then I should be able to replay the traffic and control the Aircon from my PC or use my own custom IR hub instead of sending data to some third party – Alexa or…
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Mount TrueNAS Core Samba share on Linux
Mount TrueNAS Core Samba share on Linux
This is a guide that describes on how to mount a Samba share configured TrueNAS to a Linux machine.
 Login in your Linux machine. (I am using a Linux Mint 19.3 in this demo. This should technically works for Debian/Ubuntu based systems as well)
Use the following commands to get your user ID (UID) and group ID (GID) respectively.
id -u $USER id -G $USER
Create a file /etc/.truenas_creds. This…
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Update to the latest ESXI 6.7 patch version on an Intel NUC (offline update)
Update to the latest ESXI 6.7 patch version on an Intel NUC (offline update)
I recently bought an Intel NUC for my homelab (NUC7i5BNH with 64Gigs of RAM) which has been running ESXi for the past few months and I have been happy with its performance so far. Fear for the worst, I noticed a few minor UI issues in the build that I was running which had been really bugging me. For Example: When using the search bar in the HTML5 UI, it partially hides the last search result in…
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#64gb ram#esxi#ESXi-6.7.0-20200604001#homelab#intel nuc#NUC7i5BNH#offline update#offline upgrade#vmware#vmware cli#vmware profile
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How to verify GPG key of a downloaded CentOS ISO and verify its checksum [Detailed]
How to verify GPG key of a downloaded CentOS ISO and verify its checksum [Detailed]
This is a tutorial on how to check checksums of a CentOS image using GPG to verify the integrity of a downloaded CentOS ISO image.
1. Download the public key from the CentOS website
Open a terminal and create a directory where you need to download the ISO and the checksum file.
mkdir validate && cd validate/
Download the GPG public key from the official CentOS website. (You can find the full list…
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Bash script to loop through values in a file with space as a separator
Bash script to loop through values in a file with space as a separator
Lets say we have a file with list of IPs that are space separated and you want to read each of the values to pass to a loop to perform an operation. Here is an example file with IP Addresses separated by a space:
cat ips.txt 192.168.1.1 192.168.1.10
Now, lets say you want to loop through these IPs and run a ping command against each of them.
cat ping.sh#!/bin/bash # IFS is an internal bash…
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