sh/bash/zsh parameter and if check

bash script.sh iii

if [[ "$1" == "iii" ]]; then
    echo "første parameter er iii"
else
    echo "første parameter er ikke iii"
fi

Bash. check if a file exists

Check if prepush is activated or not

lsprepush() {
  if [[ -f ".git/hooks/pre-push" ]]; then
    echo ".git/hooks/pre-push was found:"
    echo "pre-push is activated"
  else
    if [[ -f ".git/hooks/pre-push.sample" ]]; then
      echo ".git/hooks/pre-push was not found:"
      echo "but .git/hooks/pre-push.sample was found:"
      echo "pre-push is deactivated"
    else
      echo "Hmmmmm"
    fi
  fi
}