stevenharradine

/*
 * Autodetect if SSL/TLS is used by having a look at the first incoming bytes
 * This technique is from http://webview.jabberd.org/cgi-bin/viewvc.cgi/trunk/jadc2s/clients.cc?view=markup
 *
 * used heuristic:
 * - an incoming connection using SSLv3/TLSv1 records should start with 0x16
 * - an incoming connection using SSLv2 records should start with the record size
 *   and as the first record should not be very big we can expect 0x80 or 0x00 (the MSB is a flag)
 * - everything else is considered to be unencrypted
 */

stevenharradine

slacktoken="TOKEN/TOKEN/TOKEN"
slackchannel="#welcome"
hostname=`cat /etc/hostname`
diskspace=`/bin/df -h | /usr/bin/xargs -L 1 /bin/echo "\n"`

curl -X POST --data-urlencode 'payload={"channel": "$slackchannel", "username": "webhookbot", "text": "'"$hostname""\n""$diskspace"'", "icon_emoji": ":ghost:"}' https://hooks.slack.com/services/$slacktoken

stevenharradine

Headless OSMC set up

To set up an autoplaying headless media center

Requirements

• Raspberry Pi
• monitor/keyboard for setup

Steps

1. Download OSMC (https://osmc.tv/download/)
2. Flash it to SD card

stevenharradine

#!/bin/bash
# Make default camera /dev/video0 point to the "best" camera present.
# Source: https://askubuntu.com/questions/396952/how-to-change-the-default-webcam-changing-dfaults-in-multimedia-selctor-not-wor
# Date: 20170611@21:02UTC
# By: Jason Eisner (https://github.com/jeisner)

if [ -h /dev/video0 ]; then 
   sudo rm /dev/video0   # not first run: remove our old symlink
elif [ -e /dev/video0 ]; then
   sudo mv /dev/video0 /dev/video0.original   # first run: rename original video0

stevenharradine

Format/result	Command	Output
YYYY-MM-DD_hh:mm:ss	date +%F_%T	2017-10-16_21:47:43
YYYYMMDD_hhmmss	date +%Y%m%d_%H%M%S	20171016_214743
YYYYMMDD_hhmmss (UTC version)	date --utc +%Y%m%d_%H%M%SZ	20171016_124743Z
YYYYMMDD_hhmmss (with local TZ)	date +%Y%m%d_%H%M%S%Z	20171016_214743JST
YYYYMMSShhmmss	date +%Y%m%d%H%M%S	20171016214743
YYYYMMSShhmmssnnnnnnnnn	date +%Y%m%d%H%M%S%N	20171016214743670195402
YYMMDD_hhmmss	date +%y%m%d_%H%M%S	171016_214743
Seconds since UNIX epoch:	date +%s	1508158063

stevenharradine

#!/bin/bash
# This script fixes steam so it can start up on ubuntu 16.04
# Source: https://bbs.archlinux.org/viewtopic.php?id=193802 on 20171206 @ 02:43 UTC
rm ~/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/installed/libstdc++6-4.6-pic_4.6.3-1ubuntu5+srt4_amd64
rm ~/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/installed/libstdc++6-4.6-pic_4.6.3-1ubuntu5+srt4_amd64.md5
rm ~/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/installed/libstdc++6_4.8.1-2ubuntu1~12.04+steamrt2+srt1_amd64
rm ~/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/installed/libstdc++6_4.8.1-2ubuntu1~12.04+steamrt2+srt1_amd64.md5
rm ~/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/gcc/x86_64-linux-gnu/4.6/libstdc++_pic.a
rm ~/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/gcc/x86_64-linux-gnu/4.6/libstdc++_pic.map
rm ~/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libstdc++.so.6

stevenharradine

#!/bin/bash
7za a -tzip -pMY_SECRET -mem=AES256 secure.zip doc.pdf doc2.pdf doc3.pdf

stevenharradine

#!/bin/bash
settingsHash=`cat /etc/pihole/blacklist.txt /etc/pihole/whitelist.txt | md5sum`
if [ "$settingsHash" == "`cat /home/pi/current-pihole-settings.md5`" ]; then
  echo "nothing to see"
else
  echo "it changed"
  cat /etc/pihole/blacklist.txt /etc/pihole/whitelist.txt | md5sum > current-pihole-settings.md5
  scp /etc/pihole/blacklist.txt /etc/pihole/whitelist.txt pi@192.168.2.33:~/
  ssh pi@192.168.2.33 "sudo mv blacklist.txt whitelist.txt /etc/pihole/ && sudo service pihole-FTL restart"
fi

stevenharradine

Sorry dont have a name to give credit too but sourced from: https://askubuntu.com/questions/766334/cant-login-as-mysql-user-root-from-normal-user-account-in-ubuntu-16-04/801950

I recently upgrade my Ubuntu 15.04 to 16.04 and this has worked for me:

    First, connect in sudo mysql

    sudo mysql -u root

    Check your accounts present in your db

stevenharradine

@reboot PATH=/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin && /usr/bin/apt update > /tmp/update.log && /usr/bin/apt -y upgrade >> /tmp/update.log