pre-commit

Introduction

pre-commit is better githooks that are generic across projects, used to check yaml, markdown, run linters, and make sure the code is in good shape before making a commit and pushing it, or just running it in CI.

Configurations

File goes in root: .pre-commit.config.yaml

Base file

# See https://pre-commit.com for more information
# See https://pre-commit.com/hooks.html for more hooks
repos:
  - repo: https://github.com/pre-commit/pre-commit-hooks
    rev: v4.3.0
    hooks:
      - id: trailing-whitespace
      - id: end-of-file-fixer
      - id: check-yaml
      - id: check-toml
      - id: check-added-large-files

Rust file

# See https://pre-commit.com for more information
# See https://pre-commit.com/hooks.html for more hooks
repos:
  - repo: https://github.com/pre-commit/pre-commit-hooks
    rev: v3.2.0
    hooks:
      - id: trailing-whitespace
      - id: end-of-file-fixer
      - id: check-yaml
      - id: check-toml
      - id: forbid-new-submodules
      - id: check-added-large-files
        args: ["--maxkb=2000"]
  - repo: https://github.com/doublify/pre-commit-rust
    rev: v1.0
    hooks:
      - id: fmt
      - id: clippy
        args: ["--", "-D", "clippy::pedantic"]
  - repo: https://github.com/hadolint/hadolint
    rev: v2.10.0
    hooks:
      - id: hadolint

One liners

# Initialize a repo
pre-commit sample-config | tee .pre-commit-config.yaml && pre-commit autoupdate

References

Documentation Hooks

Docker

Docker is an open platform for developing, shipping, and running applications.

Update all containers and restart any updated ones

docker compose pull
docker compose up -d

Remove all volumes that are dangling (DANGEROUS)

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

Useful Docker tools

• diun

General Use Tools Oneliners

Password Generation

Generate a password of 64 characters with symbols pwgen -sy 64 1

Generate a password or passhrase with 64 characters pwgen -s 64 1

GPG

List all existing keys

gpg --list-secret-keys --keyid-format=long

Generate a new key

gpg --full-generate-key

Export public key

gpg --armor --export <KEY ID>

Export private key

gpg --export-secret-key --armor <KEY ID>

Import

gpg --import private.key

emerge

emerge is a command line interface to Portage, the Gentoo Package manager. emerge is used to install, update and maintain packages on Gentoo.

Update system

sudo eix-sync
sudo emerge -avuDN @world
sudo emerge --depclean

Update kernel

This is a script to automatically update the kernel to a selected versio. The set can be automated with awk, but I have not found the need to do so.

eselect kernel list
sudo eselect kernel set <kernel_version>
cd /usr/src/linux
sudo make oldconfig
sudo make -j${nproc}
sudo make modules_install
sudo make install
sudo eclean-kernel -n3
sudo emerge @module-rebuild