Unity/Playmaker create 1 second loop

The following picture shows the basics for create a loop that runs every second. You’ll need to create a float variable (Named oneSecond in the screen shot) that has a value of 1 for one second. Changed if desired.

Put your actions in the “Execute every 1 Second” state

For more info on Get Time Info, visit https://hutonggames.fogbugz.com/default.asp?W496

XenServer Commands

List, unplug, or destroy PBD storage repository

xe pbd-list
xe pbd-unplug uuid=[UUID for VM]
xe sr-destroy uuid=[UUID for VM]

List, unplug, or destroy storage repository.

xe sr-list
xe sr-unplug uuid=[UUID for VM]
xe sr-destroy uuid=[UUID for VM]

List VM’s

xe vm-list

Shutdown VM

xe vm-shutdown uuid=[UUID for VM]

Force shutdown VM

xe vm-shutdown -–force uuid=[UUID for VM]

List Task

xe task-list

Cancel Task

xe task-cancel uuid=[task uuid]


External Links



Can’t set default app for .blend file on Windows 10

Problem: Can’t set default program for .blend files to Windows store version of Blender

Usually is not a problem as you’ll get asked if you want to set a default program. When you hit yes, blender does not show up in the list of apps. That wouldn’t be a problem, except Blender is from the Windows Store, so there is no launcher in the ordinary places.

Resolution: Install regular Windows installer from Blenders website.

Other Info

Not sure if the issue is with the Store or Blender. The .blend file type does not show up in the Windows Settings under “Apps -> Default apps -> Choose default apps by file type” and Blender doesn’t show up under “Apps -> Default apps -> Set defaults by app”

Auto renew ssl cert for UniFI and UniFi-Video

The following script was taken from here
Added unifi-video support. Script uses letsencrypt to get the cert and automatically updates the UniFi and UniFi-Video Keystores.

Would be a good idea to check and make sure the the UniFi-Video cameras reconnect and still work.

You should be able to add the script to a cronjob to auto renew the certificate.

Run the script wit no or the -h argument to show the options and arguments to use.

./gen-unifi-cert.sh -h

Copy and paste script into gen-unifi-cert.sh file, chmod +x gen-unifi-cert.sh

#!/usr/bin/env bash
# Added support to do UniFi and UniFi controllers at the same time using the same cert.
# Original script from https://git.sosdg.org/brielle/lets-encrypt-scripts/raw/branch/master/gen-unifi-cert.sh
# More info here https://www.reddit.com/r/Ubiquiti/comments/43v23u/using_letsencrypt_with_the_unifi_controller/ 
# And here https://www.reddit.com/r/Ubiquiti/comments/43v23u/using_letsencrypt_with_the_unifi_controller/
# Modified script from here: https://github.com/FarsetLabs/letsencrypt-helper-scripts/blob/master/letsencrypt-unifi.sh
# Modified by: Brielle Bruns 
# Download URL: https://source.sosdg.org/brielle/lets-encrypt-scripts
# Version: 1.7
# Last Changed: 09/26/2018
# 02/02/2016: Fixed some errors with key export/import, removed lame docker requirements
# 02/27/2016: More verbose progress report
# 03/08/2016: Add renew option, reformat code, command line options
# 03/24/2016: More sanity checking, embedding cert
# 10/23/2017: Apparently don't need the ace.jar parts, so disable them
# 02/04/2018: LE disabled tls-sni-01, so switch to just tls-sni, as certbot 0.22 and later automatically fall back to http/80 for auth
# 05/29/2018: Integrate patch from Donald Webster  to cleanup and improve tests
# 09/26/2018: Change from TLS to HTTP authenticator

# Location of LetsEncrypt binary we use.  Leave unset if you want to let it find automatically


function usage() {
  echo "Usage: $0 -d  [-e ] [-r] [-i]"
  echo "  -d : The domain name to use."
  echo "  -e : Email address to use for certificate."
  echo "  -r: Renew domain."
  echo "  -i: Insert only, use to force insertion of certificate."

while getopts "hird:e:" opt; do
  case $opt in
    i) onlyinsert="yes";;
    r) renew="yes";;
    d) domains+=("$OPTARG");;
    e) email="$OPTARG";;
    h) usage

DEFAULTLEBINARY="/usr/bin/certbot /usr/bin/letsencrypt /usr/sbin/certbot
  /usr/sbin/letsencrypt /usr/local/bin/certbot /usr/local/sbin/certbot
  /usr/local/bin/letsencrypt /usr/local/sbin/letsencrypt
  /usr/src/letsencrypt/certbot-auto /usr/src/letsencrypt/letsencrypt-auto
  /usr/src/certbot/certbot-auto /usr/src/certbot/letsencrypt-auto
  /usr/src/certbot-master/certbot-auto /usr/src/certbot-master/letsencrypt-auto"

if [[ ! -v LEBINARY ]]; then
  for i in ${DEFAULTLEBINARY}; do
    if [[ -x ${i} ]]; then
      echo "Found LetsEncrypt/Certbot binary at ${LEBINARY}"

# Command line options depending on New or Renew.
NEWCERT="--renew-by-default certonly"
RENEWCERT="-n renew"

# Check for required binaries
if [[ ! -x ${LEBINARY} ]]; then
  echo "Error: LetsEncrypt binary not found in ${LEBINARY} !"
  echo "You'll need to do one of the following:"
  echo "1) Change LEBINARY variable in this script"
  echo "2) Install LE manually or via your package manager and do #1"
  echo "3) Use the included get-letsencrypt.sh script to install it"
  exit 1

if [[ ! -x $( which keytool ) ]]; then
  echo "Error: Java keytool binary not found."
  exit 1

if [[ ! -x $( which openssl ) ]]; then
  echo "Error: OpenSSL binary not found."
  exit 1

if [[ ! -z ${email} ]]; then
  email="--email ${email}"

shift $((OPTIND -1))
for val in "${domains[@]}"; do
        DOMAINS="${DOMAINS} -d ${val} "


if [[ -z ${MAINDOMAIN} ]]; then
  echo "Error: At least one -d argument is required"
  exit 1

if [[ ${renew} == "yes" ]]; then

if [[ ${onlyinsert} != "yes" ]]; then
  echo "Firing up standalone authenticator on TCP port 80 and requesting cert..."
  ${LEBINARY} --server https://acme-v01.api.letsencrypt.org/directory \
              --agree-tos --standalone --preferred-challenges http ${LEOPTIONS}

if [[ ${onlyinsert} != "yes" ]] && md5sum -c "/etc/letsencrypt/live/${MAINDOMAIN}/cert.pem.md5" &>/dev/null; then
  echo "Cert has not changed, not updating controller."
  exit 0
  echo "Cert has changed or -i option was used, updating controller..."

  # Identrust cross-signed CA cert needed by the java keystore for import.
  # Can get original here: https://www.identrust.com/certificates/trustid/root-download-x3.html
  cat > "${CATEMPFILE}" <<'_EOF'

  md5sum "/etc/letsencrypt/live/${MAINDOMAIN}/cert.pem" > "/etc/letsencrypt/live/${MAINDOMAIN}/cert.pem.md5"
  echo "Using openssl to prepare certificate..."
  cat "/etc/letsencrypt/live/${MAINDOMAIN}/chain.pem" >> "${CATEMPFILE}"
  openssl pkcs12 -export  -passout pass:aircontrolenterprise \
          -in "/etc/letsencrypt/live/${MAINDOMAIN}/cert.pem" \
          -inkey "/etc/letsencrypt/live/${MAINDOMAIN}/privkey.pem" \
          -out "${TEMPFILE}" -name unifi \
          -CAfile "${CATEMPFILE}" -caname root

  echo "Stopping Unifi and UniFi-Video controllers..."
  systemctl stop unifi unifi-video  

  echo "Removing existing certificate from Unifi protected keystore..."
  keytool -delete -alias unifi -keystore /usr/lib/unifi/data/keystore -deststorepass aircontrolenterprise
  echo "Removing existing certificate from Unifi-Video protected keystore..."
  keytool -delete -alias unifi -keystore /usr/lib/unifi-video/data/keystore -deststorepass ubiquiti
  # following lines are needed for unifi-video
  echo "Inserting certificate into Unifi keystore..."
  keytool -trustcacerts -importkeystore \
          -deststorepass aircontrolenterprise \
          -destkeypass aircontrolenterprise \
          -destkeystore /usr/lib/unifi/data/keystore \
          -srckeystore "${TEMPFILE}" -srcstoretype PKCS12 \
          -srcstorepass aircontrolenterprise \
          -alias unifi

  echo "Inserting certificate into Unifi-Video keystore..."
  keytool -trustcacerts -importkeystore \
          -deststorepass ubiquiti \
          -destkeypass ubiquiti \
          -destkeystore /usr/lib/unifi-video/data/keystore \
          -srckeystore "${TEMPFILE}" -srcstoretype PKCS12 \
          -srcstorepass aircontrolenterprise \

          rm -f "${TEMPFILE}" "${CATEMPFILE}"

  mv /usr/lib/unifi-video/data/ufv-truststore{,.old} # Delete old unifi-video keystore
  sleep 5
  echo "Starting Unifi and UniFi-Video controllers..."
  systemctl start unifi unifi-video 

  echo "Done!"

Reset WordPress admin password in MySQL

Log into MySQL from command line

mysql -u root -p

Select the correct database

USE wordpress_db;

Print current users

SELECT * FROM wp_users;

Should get something similar to the following

mysql> SELECT * FROM wp_users
-> ;
| ID | user_login | user_pass | user_nicename | user_email | user_url | user_registered | user_activation_key | user_status | display_name |
| 1 | admin | 5f4dcc3b5aa765d61d8327deb882cf99 | admin | bob@incredigeek.com | | 2018-08-09 10:10:42 | | 0 | admin |
| 2 | bob | 210805fb52a13251f4bedc7e725e575a | bob | bob@incredigeek.com | | 2019-11-01 11:31:23 | | 0 | bob smith |
3 rows in set (0.00 sec)

To update the password use

UPDATE wp_users SET user_pass = MD5('NewPass') WHERE ID=1;

The MD5 hashes the NewPass and adds it to the database. You can print the users again to verify the hash changed.

You should now be able to login using the new password you configure.

Install Oxidized on LibreNMS

Install Oxidized

Install Instructions from here

Install prerequisites

sudo yum -y install make cmake which sqlite-devel openssl-devel libssh2-devel ruby gcc ruby-devel libicu-devel gcc-c++

Install Ruby Gems

gem install oxidized
gem install oxidized-script oxidized-web

If you run into issues with installing the oxidized-web gem because of a ruby version, try installing ruby 2.6.1 via rvm the docs say install 2.1.2, but was having issues with it. 2.6.1 seems fine.

Install Oxidized

gem install oxidized 
gem install oxidized-script
gem install oxidized-web

Run Oxidized twice to generate the config


If you have issues running oxidized due to an invalid or self signed ssl cert, you can either fix the cert or ignore it in the oxidized config. https://github.com/ytti/oxidized/pull/618/files

Modify the Oxidized config file in “/root/.config/oxidized/config” to look like this.

Modify the http portion of the config file to look like the following.

url: https://localhost/api/v0/oxidized
scheme: https
secure: false

Setup Config

vi .config/oxidized/config

Setup the config, Basic config below, edit as needed

username: admin
password: password
model: airos
resolve_dns: true
interval: 3600
use_syslog: false
debug: false
threads: 30
timeout: 20
retries: 3
prompt: !ruby/regexp /^([\w.@-]+[#>]\s?)$/
next_adds_job: false
vars: {}
username: ubnt
password: ubnt
username: admin
ssh_port: 2222
models: {}
pid: /home/incredigeek/.config/oxidized/pid
directory: /home/incredigeek/.config/oxidized/crashes
hostnames: false
history_size: 10
default: ssh, telnet
debug: false
secure: false
passive: true
utf8_encoded: true
default: file
directory: /home/incredigeek/.config/oxidized/configs
default: http
debug: false
secure: false
scheme: https
url: https://localhost/api/v0/oxidized
name: hostname
model: os
group: group
X-Auth-Token: '3wq2b87fj4e6fb5987b5812t6ej9709g'
cisco: ios
juniper: junos
mikrotik: routeros

Setup as system service

Find the “oxidized.service” file, should be in


and copy it to


Edit it and change the user and try to launch it

systemctl start oxidized

If it fails, you may need to substitute the ExecStart= variable to the following more info


Change the ruby number if yours is different.

Enable the service on system boot up and start

systemctl enable --now oxidized

Check that oxidized is running

systemctl status oxidized

LibreNMS config

Add the following to your /opt/librenms/config.php config file.

# Oxidized configuration
$config['oxidized']['enabled'] = TRUE;
$config['oxidized']['url'] = '';
$config['oxidized']['features']['versioning'] = true;
$config['oxidized']['group_support'] = true;
$config['oxidized']['default_group'] = 'default';
$config['oxidized']['reload_nodes'] = true;# Oxidized configuration
$config['oxidized']['enabled'] = TRUE;
$config['oxidized']['url'] = '';
$config['oxidized']['features']['versioning'] = true;
$config['oxidized']['group_support'] = true;
$config['oxidized']['default_group'] = 'default';
$config['oxidized']['reload_nodes'] = true;
$config['oxidized']['ignore_os'] = array('linux','windows');
$config['oxidized']['ignore_types'] = array('server','power');

LibreNMS should now feed Oxidized the devices.

You can check in the LibreNMS interface to see if it is getting the configs. https://librenms/oxidized

where librenms is your LibreNMS servers ip/hostname.

Install Ruby 2.6.1 via RVM on CentOS

Install Prerequisites

yum install -y curl gcc-c++ patch readline readline-devel zlib zlib-devel libyaml-devel libffi-devel openssl-devel make cmake bzip2 autoconf automake libtool bison libssh2-devel libicu-devel

Install RVM

curl -L get.rvm.io | bash -s stable

Setup RVM, install Ruby 2.6.1 and set to default.

source /etc/profile.d/rvm.sh 
rvm install 2.6.1
rvm use --default 2.6.1

You may need to add root or the user your using to the rvm group

sudo usermod -G rvm username

Pulled some of the info from here https://github.com/ytti/oxidized#installing-ruby-212-using-rvm

Bash ANSI-C Quoting

Pulled from https://www.gnu.org/software/bash/manual/bashref.html#ANSI_002dC-Quoting

As a side note there is a lot of good bash info out here. https://www.gnu.org/software/bash/manual/bashref.html ANSI-C Quoting

Words of the form $'string' are treated specially. The word expands to string, with backslash-escaped characters replaced as specified by the ANSI C standard. Backslash escape sequences, if present, are decoded as follows: \a

alert (bell) \b

backspace \e\E

an escape character (not ANSI C) \f

form feed \n

newline \r

carriage return \t

horizontal tab \v

vertical tab \\

backslash \'

single quote \"

double quote \?

question mark \nnn

Some examples

echo Hello $'\t' World

Returns “Hello World” with a tab space between both words.

echo Hello $'\n' World

Returns Hello on one line and World on the second

echo "\"Hello World\""

Returns “Hello World” inside double quotes