davidnicholai / my-environment

Personal configs, dotfiles, scripts

David's Environment Configurations

• debian-install.sh - Setup my configurations in a Debian environment (for my rpi and Ubuntu machines).
• raspbian-install-docker.sh - A script to install Docker in my rpi.
• ubuntu-install-docker.sh - A script to install Docker in my Ubuntu images.

Tips

Any UNIX-related commands I will def forget in the future are listed below.

Bash

• Ctrl+W to clear a word
• Ctrl+U to clear everything you've typed
• Ctrl+L to clear the Terminal
• oh-my-zsh cheat sheet
• Learn more about Unix commands and scripting: http://linuxcommand.org/index.php

Miscellaneous

To delete all files/directories inside a directory

• File: find . -type f -name 'FILE_NAME' -exec rm -r {} +
• Directory: find . -type d -name 'DIRECTORY_NAME' -exec rm -r {} +

Scan directory and delete bin/obj directories find . \( -name 'bin' -o -name 'obj' \) -type d -exec rm -r {} +

To synchronize files rsync -av[n] SRC DEST Adding n (dry-run) will print a list of files to be transferred

To kill a process such as tmux pkill -f tmux

Fix WARNING: UNPROTECTED PRIVATE KEY FILE sudo chmod 600 ~/.ssh/id_rsa

To own the contents of a directory sudo chown -R david:david .

Restart a service: sudo systemctl [restart/stop/start] raspotify

Add SSH public key to remote server: ssh-copy-id -i /path/to/file [user@]192.168.1.123

To mount a gpt image built from ddrescue:

losetup --partscan --find --show disk.img
mount /dev/loop0p1 /mnt

# to free it up, unmount then
losetup -d /dev/loop0

Docker

Check out the Dockerfile in this repository if you need a reference.

Build image from a Dockerfile: docker build -t DESIRED_TAG_NAME .

Run your image: docker run [-p 80:80] [-d/--detach] TAG_OF_BUILT_DOCKER_IMAGE

Run command in image: docker exec -it TAG_OF_BUILT_DOCKER_IMAGE bash

List running containers: docker ps [-a|--all]

Delete a Docker container: docker rm TAG_OF_CONTAINER

Stop a container: docker stop CONTAINER

Remove unused images: docker image prune

List images: docker image ls

Delete images: docker image rm IMAGE_ID [IMAGE_IDS]

Maybe you want to start a new Django project but want to do everything in Docker:

docker run -it --volume /home/yourusername/dev/my-python-project:/app python:3.9.6 /bin/bash

Pyenv Virtualenv

To create a virtualenv

pyenv virtualenv 3.8.5 my-virtual-env-3.8.5

List all virtualenvs

pyenv virtualenvs

Activate virtualenv

pyenv activate my-virtual-env-3.8.5

To automatically load virtualenv in the Terminal, create a file .python-version in the root of the project, then the contents should be:

3.8.5

or

3.8.5/envs/<name_of_virtualenv>

Heroku

Deploy from local branch to Heroku git push heroku <branch_name>:main Connecting via bash heroku ps:exec /bin/bash Connect local repo to Heroku heroku git:remote -a <heroku_project>

GNOME

Alt+tab on active workspace only

`gsettings set org.gnome.shell.app-switcher current-workspace-only true``