Author: David Kittell

CentOS | Code | Debian | Fedora | Raspberry Pi | Raspbian (Raspberry Pi OS) | Red Hat | Ubuntu | UNIX | UNIX Shell Scripts | Zorin OS

UNIX – Set SSH Banner
ByDavid Kittell January 17, 2018May 4, 2025

Obviously it will be slightly different depending on your network and version but it will look something like this. Kittell.net WARNING This computer system is the property of Kittell.net. It may be accessed and used only for authorized Kittell.net business by authorized personnel. Unauthorized access or use of this computer system may subject violators to…

Read More UNIX – Set SSH Banner
Azure | Code | DNS | PowerShell | Windows

PowerShell – Set DHCP DNS or Set Static DNS
ByDavid Kittell January 16, 2018February 12, 2019

Execute with

Read More PowerShell – Set DHCP DNS or Set Static DNS
Code | OpenSSL | SSL | UNIX | UNIX Shell Scripts

OpenSSL – Decode/Read CSR
ByDavid Kittell January 5, 2018

Sometimes you when a SSL CSR isn’t named properly you need to get the details of it, the code below will help. Note: Depending on version and OS the placement numbers (-f5 for example) may be slightly off. Once you have created the shell script call to it with the code below. Note: the file…

Read More OpenSSL – Decode/Read CSR
Code | Ubuntu | UNIX | UNIX Shell Scripts

Ubuntu – Remove Preloaded Applications
ByDavid Kittell January 4, 2018January 10, 2020

Installing Ubuntu for a server OS? The code below will remove some of the preloaded applications that are needed on a server. Arguably you could remove Gnome in general and all Gtk but that depends on how you want to run your server.

Read More Ubuntu – Remove Preloaded Applications
Code | JSON | UNIX | UNIX Shell Scripts

DirecTV – API JSON Service
ByDavid Kittell January 3, 2018January 3, 2018

If you have your DirecTV Unit plugged into your network at home you could run a couple fun commands.

Read More DirecTV – API JSON Service
Code | macOS | macOS Shell | UNIX | UNIX Shell Scripts

Mac OSX Terminal – Lynx HTML Parsing
ByDavid Kittell January 1, 2018

Lynx has a lot of good purposes but in this example below I’m simply going to strip URLs from a bookmarks HTML file exported from Chrome. If you have created folders and links all over the place in Chrome or Firefox this below will be helpful

Read More Mac OSX Terminal – Lynx HTML Parsing
CentOS | Code | Fedora | Red Hat | UNIX | UNIX Shell Scripts

Red Hat / CentOS / Fedora – Create Jailed SFTP User
ByDavid Kittell December 26, 2017

If you are working on a project and need SFTP capabilities but don’t want users to see each other’s files create a SFTP Jailed server. Assumptions for the code below is that you are running Red Hat, CentOS, or Fedora and already have the OS running. NOTE: In this first script block it will restart…

Read More Red Hat / CentOS / Fedora – Create Jailed SFTP User
Azure | Azure CLI | Code

Azure CLI – List All VMs with Details
ByDavid Kittell December 24, 2017

Read More Azure CLI – List All VMs with Details
CentOS | Code | Fedora | macOS | Raspberry Pi | Raspbian (Raspberry Pi OS) | Red Hat | Ubuntu | UNIX | UNIX Shell Scripts | Zorin OS

UNIX – SED Replace Tab with Space(s)
ByDavid Kittell December 20, 2017

Originally found at https://linuxconfig.org/replace-all-tab-characters-with-spaces

Read More UNIX – SED Replace Tab with Space(s)
Azure | Azure CLI | Azure CLI Functions | Code | UNIX | UNIX Shell Scripts | Windows

Azure – CLI – Build Windows/UNIX VM Function (With or without public IP)
ByDavid Kittell December 19, 2017

In the functions below the VM name is used in all of the pieces to build the VM to simplify documentation. Important Items: As I use a Firewall appliance in Azure I do not set Network Security Groups (NSG). I have a predefined virtual network (VN) and predefined network subnet configuration (NSC) UnixAdmin user is…

Read More Azure – CLI – Build Windows/UNIX VM Function (With or without public IP)