wmertens

#!/usr/bin/env bash
#
# ssh-crypt
#
# Bash function to encrypt/decrypt with your ssh-agent private key.
# Requires the commands gzip, ssh-add, ssh-keygen and openssl.
#
# Uses bash-specific extensions like <<<$var to securely pass data.
#
# Wout.Mertens@gmail.com 2021-11-11 - MIT Licensed

DanielSmon

@ECHO OFF

REM Uses the file name as the profile name
SET MSTEAMS_PROFILE=%~n0
ECHO - Using profile "%MSTEAMS_PROFILE%"

SET "OLD_USERPROFILE=%USERPROFILE%"
SET "USERPROFILE=%LOCALAPPDATA%\Microsoft\Teams\CustomProfiles\%MSTEAMS_PROFILE%"

REM Ensure there is a downloads folder to avoid error described at

dafta

# Forwarding your .ssh/sshrc file and sourcing it as .bashrc
# A function sudoi is defined on the remote machine, used
# instead of sudo -i, to run a shell as the specified user,
# or root as default, and source the local .ssh/sshrc.

function ssh() {
        tmprc=$(/usr/bin/ssh "$@" "mktemp" 2>/dev/null)
        rsync ~/.ssh/sshrc "$1:$tmprc" >/dev/null 2>&1 
        echo "function sudoi() { sudo -u \"\${1:-root}\" bash --rcfile \"$tmprc\"; }" | /usr/bin/ssh "$@" "cat - >> \"$tmprc\"" >/dev/null 2>&1
        /usr/bin/ssh -t "$@" "chmod a+r \"$tmprc\"; bash --rcfile \"$tmprc\" ; rm \"$tmprc\""

detunized

# On the host to run the container
docker run --privileged -i -t -v ~/host-folder-to-mount:/root/folder-ro:ro ubuntu

# Inside the container
# Need to create the upper and work dirs inside a tmpfs.
# Otherwise OverlayFS complains about AUFS folders. 
mkdir -p /tmp/overlay && \
mount -t tmpfs tmpfs /tmp/overlay && \
mkdir -p /tmp/overlay/{upper,work} && \
mkdir -p /root/folder && \

stonehippo

Getting a USB device to show up in a Docker container on OS X

Some background

I was trying to get the Arduino IDE to work inside a Docker container on OS X. I was able to get the IDE working (see Getting X11 GUI applications to work on OS X with Docker), but I could not figure out how to make the USB port for the Arduino visible.

The solution

I first tried to directly map hardware serial port into the Docker container, doing something like this:

stonehippo

Getting X11 GUI applications to work on OS X with Docker

$ brew install socat
$ brew cask install xquartz <--- assuming you don't already have XQuartz installed some other way
$ open -a XQuartz <--- start an XQuartz session

$ socat TCP-LISTEN:6000,reuseaddr,fork UNIX-CLIENT:\"$DISPLAY\"

bastman

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

popravich

The standard names for indexes in PostgreSQL are:

{tablename}_{columnname(s)}_{suffix}

where the suffix is one of the following:

• pkey for a Primary Key constraint;
• key for a Unique constraint;
• excl for an Exclusion constraint;
• idx for any other kind of index;

andershammar

#!/bin/bash -ex

if [ "$(cat /mnt/var/lib/info/instance.json | jq -r .isMaster)" == "true" ]; then
    # Install Git
    sudo yum -y install git

    # Install Maven
    wget -P /tmp http://apache.mirrors.spacedump.net/maven/maven-3/3.3.3/binaries/apache-maven-3.3.3-bin.tar.gz
    sudo mkdir /opt/apache-maven
    sudo tar -xvzf /tmp/apache-maven-3.3.3-bin.tar.gz -C /opt/apache-maven

tresni

Moving Authy to 1Password

1Password 5.3 for OSX, 5.2 for iOS, and 4.1.0.538 for Windows support OTP. I've been using Authy for a while now, but the fact is, I haven't really been using 2FA for some time. As mentioned by 1Password in a recent blog post, having the OTP generator and password on the same device is very much not 2FA. It's just an expiring OTP, which can help, but let's not kid ourselves too much.

With that out of the way. One of the things that was interesting to me was moving my OTP out of Authy and into 1Password. I like the control I get with 1Password, but I didn't want to have to reset all my OTP right away, that would suck. So, I got to dissecting the Authy Chrome App to see what I could do.

Run the Authy Chrome app and make sure it's unlocked.

Now, enable Developer mode in Chrome. We'll need this to inspect the background application that stores al