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darrenpmeyer / mkv2mp4.zsh
Created June 11, 2024 02:34
Losslessly convert folder of MKV files from OBS to MP4 files
#!env zsh
## if `env` is not in your path, change the above to point to
## the absolute path of `env` on your system; often `/usr/bin/env`
for mkv in *.mkv ; do
mp4="${mkv%.mkv}.mp4"
echo -n "'$mkv' => '$mp4'"
if [[ -f "$mp4" ]]; then
echo " [SKIPPED] (MP4 already exists)"
continue
fi
@darrenpmeyer
darrenpmeyer / local_user_x11_applications.md
Created February 15, 2023 16:19
HOWTO allow a specific local user access to your current X11 session

The Problem

You're happly running a desktop X11 session as user anne; but you want to be able to run an X11 application in that session as bob, but wehn you try to do this you get:

X-Server access is denied on host

The solution

@darrenpmeyer
darrenpmeyer / start-gocryptfs.sh
Created June 28, 2022 13:55
Encrypted Dropbox/Box/GoogleDrive folder on macOS using gocryptfs
#!/usr/bin/env bash
set -euo pipefail
## encrypted files; script will create this. Put in a synced folder
ENCRYPTED_FOLDER="~/Dropbox/encrypted"
## mountpoint; script will create this. Should stay empty when not mounted!
## DO NOT PUT THIS IN A SYNCED FOLDER - DOING SO WILL SYNC UNENCRYPTED DATA
MOUNTPOINT="~/.local/cloudmount/Dropbox-Encrypted"
@darrenpmeyer
darrenpmeyer / ip4-alias.sh
Created June 10, 2022 18:10
Perl one-liner to get IP address from mDNS/DNS/Bonjour/whatever - works on any *nix that supports getHostByName
# usage: `ip4 HOSTNAME`
alias ip4='perl -MSocket -e '\''$pack=gethostbyname($ARGV[0]); print inet_ntoa($pack)'\'''
@darrenpmeyer
darrenpmeyer / big-sur-crontab.md
Created November 8, 2021 17:01
Setting up user cron jobs on macOS 11.6 Big Sur

NOTE the cron command scheduler is considered deprecated by Apple, in favor of using Launch Agents along with launchd. There is a decent launchd tutorial at launchd.info if you want to do that instead.

Give cron full disk access

Cron jobs usually need to work outside of the macOS "sandbox", accessing scripts and files across the filesystem. macOS supports Unix filesystem permissions, but there's an additional safety gate that's evaluated

@darrenpmeyer
darrenpmeyer / decrypt-howto.md
Created December 23, 2020 02:36
Decrypt Unifi .unf backups

NB: these instructions are for Ubuntu; they work under WSL on Windows 10 as well

Get the decrypt.sh file from here: https://github.com/zhangyoufu/unifi-backup-decrypt

Make sure prerequisites are installed:

sudo apt update && sudo apt install zip unzip openssl mongo-tools
@darrenpmeyer
darrenpmeyer / README.md
Created November 20, 2020 19:35
Automatically start a single instance of ssh-agent for all terminal sessions to share (bash)

Installation

  1. mkdir -p ~/.config && touch ~/.config/ssh-agent.pid
  2. Paste the contents of ssh-agent-manage.sh into your .bashrc or .bash_profile or similar
  3. killall -9 ssh-agent
  4. Start a new terminal session (note: old sessions will not see ssh-agent, only new ones)

Details

This snippet, when included in .bashrc, will ensure that your session has a working ssh-agent with all your ssh keys loaded into it. It does this without creating separate ssh-agent processes by:

@darrenpmeyer
darrenpmeyer / burp-hidpi.md
Created October 19, 2020 21:34
Pixel Doubling / HiDPI display support for BurpSuite

Running BurpSuite on a HiDPI display, and that makes the interface window tiny and unreadable?

Just set the _JAVA_OPTIONS environment variable so that it includes -Dsun.java2d.uiScale=2

On Linux, you can edit the BurpSuiteCommunity executable shell script wherever it's been installed, to include the following line near the top (below the #! line, though!):

export _JAVA_OPTIONS="-Dsun.java2d.uiScale=2"
@darrenpmeyer
darrenpmeyer / autobuild-openconnect-8-ubuntu.sh
Created June 10, 2020 16:21
Autobuild script for OpenConnect 8 (Ubuntu 18/19 bionic/eoan)
#!/usr/bin/env bash
oc_ver="8.10"
echo "Autobuild OpenConnect $oc_ver"
echo " "
echo "This script uses apt-get and make install via sudo rights"
echo "To simplify this, we're going to use sudo -v to pre-authenticate you"
sudo -k
sudo -v
@darrenpmeyer
darrenpmeyer / setchime.sh
Last active March 5, 2020 15:20
Control macOS startup chime
#!/usr/bin/env bash
set -eu -o pipefail
## based on work by Mr. Macintosh: https://mrmacintosh.com/how-to-enable-the-mac-startup-chime-on-your-2016-macbook-pro/
## hattip DaringFireball: https://daringfireball.net/linked/2020/02/25/mac-startup-chime
##========================================================================
## To the extent possible under law, Darren Meyer has waived all copyright
## and related or neighboring rights to setchime.sh
##========================================================================