jbelmont

Red Hat Enterprise Linux Diagnostics & Troubleshooting (RH342)

Last update: Fri Jul 26 08:23:20 UTC 2019 by @luckylittle

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1. Troubleshooting principles

2. Generic issues

jbelmont

Red Hat Security: Linux in Physical, Virtual and Cloud (RH415)

Last update: Mon Nov 18 05:32:46 UTC 2019 by @luckylittle

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1. Managing Security & Risk

# USING YUM TO MANAGE SECURITY ERRATA:

jbelmont

Disclaimer: I'm not the original author of this sheet, but can't recall where I found it. If you know the author, please let me know so I give the attribution.

The original author seems to be Charles Edge, here's the original content, as pointed out by @percisely.

Note: Since this seems to be helpful to some people, I formatted it to improve readability of the original. Also, note that this is from 2016, many things may have changed, and I don't use macOS anymore, so I probably can't help in case of questions, but maybe someone else can.

Mac Network Commands Cheat Sheet

After writing up the presentation for MacSysAdmin in Sweden, I decided to go ahead and throw these into a quick cheat sheet for anyone who’d like to have them all in one place. Good luck out there, and s

jbelmont

An Alexa skill may ask a user a Yes/No question and the response handled by request handlers for the built-in AMAZON.YesIntent and AMAZON.NoIntent intents. (This is different than dialog confirmation where Yes/No confirmation is handled by the dialog.)

It’s easy to setup these intents and their respective intent handlers. Just like any intent, declare them in the interaction model:

{
  "name": "AMAZON.YesIntent",
  "samples": []
},
{

jbelmont

module "combined_acm_certificate" {
  source = "../../modules/acm_certificate_dns_validated_multi_zone"

  domain_name = "infra.example.com"
  zone_to_san = {
    "infra.example.com" = [
      "*.infra.example.com",
      "*.dev.infra.example.com",
      "*.staging.infra.example.com",
      "*.production.infra.example.com",

jbelmont

#!/bin/sh

# Generate self signed root CA cert
openssl req -nodes -x509 -newkey rsa:2048 -keyout ca.key -out ca.crt -subj "/C=AU/ST=NSW/L=Sydney/O=MongoDB/OU=root/CN=`hostname -f`/[email protected]"


# Generate server cert to be signed
openssl req -nodes -newkey rsa:2048 -keyout server.key -out server.csr -subj "/C=AU/ST=NSW/L=Sydney/O=MongoDB/OU=server/CN=`hostname -f`/[email protected]"

# Sign the server cert

jbelmont

// a list of useful queries for profiler analysis.  Starting with the most basic.
// 2.4 compatible
//

// output explained:
//
{
 "ts" : ISODate("2012-09-14T16:34:00.010Z"),  			// date it occurred
	"op" : "query",						// the operation type
	"ns" : "game.players",					// the db and collection

jbelmont

## GIT PROMPT DISPLAY
ZSH_THEME_GIT_PROMPT_ADDED="%{$fg[green]%} ✚"
ZSH_THEME_GIT_PROMPT_MODIFIED="%{$fg[yellow]%} ✚"
ZSH_THEME_GIT_PROMPT_DELETED="%{$fg[red]%} ✖"
ZSH_THEME_GIT_PROMPT_RENAMED="%{$fg[magenta]%} ➜"
ZSH_THEME_GIT_PROMPT_UNMERGED="%{$fg[red]%} ⇡"
ZSH_THEME_GIT_PROMPT_UNTRACKED="%{$FG[014]%} ✭"

PROMPT='$FG[008][%*]%{$reset_color%} $FG[004]%~%{$reset_color%} $FG[006]$(git_current_branch)%{$reset_color%}$(git_prompt_status)
$FG[002]❯%{$reset_color%} '

jbelmont

• XML GET

curl -H "Accept: application/xml" -H "Content-Type: application/xml" -X GET "http://hostname/resource"

• JSON GET

curl -i -H "Accept: application/json" -H "Content-Type: application/json" -X GET "http://hostname/resource"

• JSON PUT