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Reset Windows 2012R2 local administrator password

• Boot from Microsoft Windows Server 2012R2 DVD/ISO.
• From the Windows Setup menu, click "Next".
• Select "Repair your computer".
• Click on "Troubleshoot".
• Under Advanced options, click "Command Prompt".

At the command prompt, run the following commands:

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Node.js module dependency injection pattern

The module

'use strict';

let config = {};

// inject dependencies

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Suggested HTTP Content-Types for gzip compression

My current list of Content-Types that are worthy of gzip compression:

application/javascript
application/json
application/vnd.ms-fontobject
application/x-font-ttf
image/svg+xml

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PowerShell if expressions cheatsheet

String
Is equal (case insensitive)	if ($VAR1 -eq $VAR2)

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NSSM cheatsheat

See: NSSM - the Non-Sucking Service Manager

• Create a new service
• List parameters for a service
• Set a parameter for a service
• Parameter list

Create a new service

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macOS SSH client host autocomplete

Snippet for ~/.bash_profile, adding hostname autocomplete to ssh and scp.

Extracts host hints from ~/.ssh/config.

function __completeSSHHosts {
  COMPREPLY=()
 local currentWord=${COMP_WORDS[COMP_CWORD]}

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Enable execute on partition mounted with noexec

The example situation:

• Wish to execute a bash script at /var/foobah/myscript.sh
• But /var/ has been mounted using noexec via /etc/fstab.
• How to solve? Using bind mounts.

Firstly, create a directory to hold script(s), located somewhere that has exec rights, then create the target directory on noexec partition:

$ mkdir --parents /opt/magnetik/foobah

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#!/bin/bash

# query MySQL for slave replication status
# note: requires [~/.my.cnf] to be present a populated with valid MySQL password
mysql \
	--batch \
	--user root \
	--execute "SHOW GLOBAL STATUS LIKE 'Slave_running';" | \
		tail --lines 1 | grep --extended-regexp --quiet "^Slave_running\tON$"

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Bash if conditions with functions()

Some examples of calling bash functions in if; then; fi conditionals - both functions that echo and return.

#!/bin/bash -e

function functionOne {
	echo -n "$1 - $2"
}

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Install OSX Parallels version 10/11/12/13 tools on Ubuntu server guest

Have tested these instructions successfully under Ubuntu 16.04LTS and 14.04LTS.

• Create Ubuntu server instance under Parallels (obviously).
• Start VM, goto Actions - Install Parallels Tools... to mount the ISO image.
  • Note: if this fails, or updating tools for an existing guest you can do the following:
  • Goto Devices > CD/DVD 1 > Connect Image....
  • Select the following ISO image: /Applications/Parallels Desktop/Contents/Resources/Tools/prl-tools-lin.iso.
  • This will mount the tools CD image.