Useful One Liners and Small Scripts

oneliners.md

Useful One Liners and Small Scripts

• Useful One Liners and Small Scripts
  • Windows
    • Remote Administration
      • Install Windows Native OpenSSH Client
      • Configure Windows Headless Server for Remote Teamviewer Connection From 2020 M1 Macbook Air
    • Enterprise Apps Hell
      • Delete broken Skype sip archives (Tested on Windows 10 1808 - Windows 10 20hr2)
    • USB Tools
      • Creating Bootable Windows 10 USB on MacOS
  • Docker
    • Setting and Unsetting Environment variables in a .env file
    • Running Docker via Rosetta (For Compatability)
    • Quickly Cleaning Local Docker environment
    • Keep Container open for Debugging
    • Create Local Postgres DB For Testing (mirror/expose db port at localhost)
  • Linux
    • Quickly Create Cron Job for Script
  • Django
    • Initialize Superuser using environment variables
    • Generate new Django Secret Key
  • Macos
    • manage python versions using brew and pyenv
  • QA Playwright / Chrome Dev
    • Inspect Elements that Disappear
  • Ubuntu
    • Remote Management
      • Remove Excessive Alerts on Wifi Scanning Remote Machines

Windows

Remote Administration

Install Windows Native OpenSSH Client

Credit: Ravi Nandval - Superuser

1. install:

 DISM.exe /Online /Add-Capability /CapabilityName:OpenSSH.Client~~~~0.0.1.0

2. Ensure service is enabled and set to run automatically

3. git clone using specific identity file Credit: Jan Toth - devopsinuse

git clone git@github.com:autocloudmaniacs/red-queen-appl.git --config core.sshCommand="ssh -i ~/.ssh/erste"

Configure Windows Headless Server for Remote Teamviewer Connection From 2020 M1 Macbook Air

macos-headless-display.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\Configuration\SIMULATED_1002_6939_00000001_00000000_100^90637A258A32A466A3662FA204717CB2\00]
"PrimSurfSize.cx"=dword:00000a00
"PrimSurfSize.cy"=dword:00000640
"Stride"=dword:00002800

Enterprise Apps Hell

Delete broken Skype sip archives (Tested on Windows 10 1808 - Windows 10 20hr2)

Used to fix global address syncing issues credit: Peter Schmidt MS Digest

get-childitem -path "c:\users\" -filter "sip*" -recurse -force -errorAction SilentlyContinue | remove-item -confirm

USB Tools

Creating Bootable Windows 10 USB on MacOS

Credit: Alex Lubbock

1. Get List of Disks Make Note of identifier of your removable media

diskutil list

2. Format the removable Media

diskutil eraseDisk MS-DOS "WINDOWS10" MBR <Your Disk Identifier>

3. Mount Windows 10 ISO in Finder
4. Make Note of Volume Name

ls /Volumes

5. Copy all files except .wim to removable USB

rsync -avh --progress --exclude=sources/install.wim /Volumes/<Your Volume Name>/ /Volumes/WINDOWS10

6. install wimlab requires brew

brew install wimlib

7. Use WimLib to copy over the .wim files to the removable media

wimlib-imagex split /Volumes/<Your Volume Name>/sources/install.wim /Volumes/WINDOWS10/sources/install.swm 3800

Docker

Setting and Unsetting Environment variables in a .env file

credit: Silas Paul and others stackoverflow

# set all variables defined in the .env file
export $(grep -v '^#' .env | xargs)

# up your composition expecting the defined environment variables
docker-compose up -d

# Unset the variables when done
unset $(grep -v '^#' .env | sed -E 's/(.*)=.*/\1/' | xargs)

Running Docker via Rosetta (For Compatability)

credit: superpoussin22 github

export DOCKER_DEFAULT_PLATFORM=linux/amd64

Quickly Cleaning Local Docker environment

Credit: John Kuriakose

docker-clean.sh

#!/bin/bash
docker stop $(docker ps -a -q)
docker rm $(docker ps -a -q)
docker rmi $(docker images -a -q)
docker volume prune -f
docker network prune -f

Keep Container open for Debugging

Credit: devopscube

ENTRYPOINT ["tail", "-f", "/dev/null"]

Create Local Postgres DB For Testing (mirror/expose db port at localhost)

docker run --name [name] -e POSTGRES_PASSWORD=[pass] -e POSTGRES_USER=[user] -e POSTGRES_DB=[dbname] -d -p 5432:5432 postgres

Linux

Quickly Create Cron Job for Script

apt-get update && apt-get install -y cron && echo "* * * * * <USER> sh /path/to/script.sh" >> /etc/crontab && service cron restart

Django

Initialize Superuser using environment variables

echo "from django.contrib.auth.models import User" > createadmin.py
echo "User.objects.create_superuser('$SUPERUSER', '$SUPERUSER_EMAIL', '$SUPERUSER_PASS')" >> createadmin.py
python manage.py shell < createadmin.py
rm -f createadmin.py

Generate new Django Secret Key

credit Serhat Teker

python manage.py shell -c 'from django.core.management import utils; print(utils.get_random_secret_key())'

Macos

manage python versions using brew and pyenv

1. install pyenv

brew install pyenv

2. install specific python version

pyenv install 3.11.1

3. configure zsh ~/.zshrc

export PYENV_ROOT="$HOME/.pyenv"
export PATH="$PYENV_ROOT/bin:$PATH"

if command -v pyenv 1>/dev/null 2>&1; then
  eval "$(pyenv init --path)"
  eval "$(pyenv init -)"
fi

4. set pyenv global environment

pyenv global 3.11.1

QA Playwright / Chrome Dev

Inspect Elements that Disappear

setTimeout(() => {
  debugger;
}, 5000);

Ubuntu

Remote Management

Remove Excessive Alerts on Wifi Scanning Remote Machines

credit Griffon stackexchange

/etc/polkit-1/localauthority/50-local-d

[Allow Wifi Scan]
Identity=unix-user:*
Action=org.freedesktop.NetworkManager.wifi.scan;org.freedesktop.NetworkManager.enable-disable-wifi;org.freedesktop.NetworkManager.settings.modify.own;org.freedesktop.NetworkManager.settings.modify.system;org.freedesktop.NetworkManager.network-control
ResultAny=yes
ResultInactive=yes
ResultActive=yes