KEINOS' Blog

Official blog of KEINOS but mostly for my own reference. A Japanese made in Mexico with Mexican quality. Who monkey around the jungle of codes. ;-)

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Project maintained by KEINOS Hosted on GitHub Pages — Theme by mattgraham

CheetSheet of KEINOS

This is a memorandum/cheet-sheet for KEINOS.

Index

• Ed25519

• Git
  • Append a commit to the previous commit
  • Create Orphan Branch
  • Rename branch from “master” to “main”
• Golang CheetSheet
  • Generate rowID and tableID for Key-Value SQLite3
  • How to convert bytes to int ([]byte --> int)
  • Random Numbers
    • Cryptographically Insecure
    • Cryptographically Secure
  • Enum (Enumerable)
  • Get imported module’s version from the code
  • How to get content like cURL
  • How to return error response in httptest.NewServer during test
  • How to update all the packages(go.mod and go.sum to the latest)
  • How to sleep a second
  • How to sleep n seconds
  • Field Names/Variables of GoReleaser
  • How to install benchstat
  • How to benchmark
  • How to generate 1MBytes of consistent data for testing
  • How to write gigantic data to a file
  • How to check if file exists
  • How to deal with/mimic io.Reader
  • How to deal with/mimic io.Writer
  • How to capture os.Stdout (dealing with/mock/mimic os.Stdout)
  • How to deal with/mock/mimic os.Stdin
  • How to trim/remove comments
  • How to shuffle a slice
  • How to remove a repeated spaces in a string
  • How to get an element randomly from a slice
  • How to build static binary
  • Get maximum int value available
• GPG (OpenPGP/GnuPG)
  • References
  • How to create GPG key pair
  • How to sign a file with GPG key
  • How to verify the signed file
  • Assign PGP key to git commit
  • How to get existing GPG key info
  • Whow to get the fingerprint of a GPG key
  • How to upload GPG key to key-server (keys.openpgp.org)
  • How to get current GPG Keys (Public and Private)
• IPFS
  • Create IPFS system user with no home
  • Create IPFS systemd service
  • List peer nodes (Observe peers)
  • Wrap files with a directory object when adding to IPFS
  • View all pinned files
  • How to generate swarm-key for private IPFS network
  • How to set swarm-key for JS-IPFS
  • How to find/show the current peer ID of the node
  • Run as a service via brew install
• K3OS
  • Set password
  • SSH Access
  • Login via SSH with GitHub account
  • Shutdown
  • Basic kubectl commands
  • View nodes
  • View pod information
    • Get Pod name and Pod log
    • Get inside the Pod
  • Path of the key (Node Token) to share with other nodes
  • Set up worker node
  • Install Rancher on VM
• Linux CheetSheet
  • Check available disk drive
  • Command Alias
  • How to check users in a Linux system
  • How to get the filesystem name of the root directory’s partition
  • systemd
    • How to check systemctl error log
    • View all services’ status
    • View service log
    • Reasons to get “Active: inactive (dead)”
  • Ubuntu
    • How to install Japanese language pack on Ubuntu/Debian
• Linux (Alpine Linux)
  • Must dependencies for building Go binary
  • How to create user (docker)
  • Installing Docker on Alpine Linux
  • Launching Portainer via docker compose
• macOS CheetSheet
  • Get OS version info
  • How to check current DNS server using
  • How to boot from external drive
  • How to check macOS Recovery Partition
  • Disalbe CSR Utils
  • Homebrew
    • Run as a service
  • How to create key pari for SSH and sign
• General/Miscellaneous
  • Markdown
    • Flavors
    • MarkdownLint
  • VSCode
    • Comment out/in the selected code on macOS
• Proxmox Cheetsheet
  • How to update CT Template (LXC Container templates)
• RaspberryPi CheetSheet
  • RaspberryPi Imager
    • Advanced Mode
  • How to check the voltage status
  • Configuration
    • raspi-config
    • Enable 64bit OS
    • Add user

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• View the repository: github.com/KEINOS/cheetsheets @ GitHub
• Table of contents created by gh-md-toc @ GitHub