brew install gh

sudo port install gh

(type -p wget >/dev/null || (sudo apt update && sudo apt-get install wget -y)) \
  && sudo mkdir -p -m 755 /etc/apt/keyrings \
  && out=$(mktemp) && wget -nv -O$out https://cli.github.com/packages/githubcli-archive-keyring.gpg \
  && cat $out | sudo tee /etc/apt/keyrings/githubcli-archive-keyring.gpg > /dev/null \
  && sudo chmod go+r /etc/apt/keyrings/githubcli-archive-keyring.gpg \
  && echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" | sudo tee /etc/apt/sources.list.d/github-cli.list > /dev/null \
  && sudo apt update \
  && sudo apt install gh -y

sudo dnf install gh

sudo pacman -S github-cli

sudo zypper install gh

winget install --id GitHub.cli

scoop install gh

choco install gh

gh --version
# gh version 2.x.x (2024-xx-xx)

# macOS
brew upgrade gh
 
# Debian/Ubuntu
sudo apt update && sudo apt install gh
 
# Windows
winget upgrade --id GitHub.cli

gh help              # General help
gh help <command>    # Help for a specific command
gh <command> --help  # Same thing
man gh               # Man pages (Linux/macOS)