Nasty Bash alternative to https://github.com/sindresorhus/is-up

.bashrc

is-up() {
  is_up_url="http://isitup.org/$1.json"
  is_up_json=$(curl -s ${is_up_url})
  is_up_status=$(expr "${is_up_json}" : '.*"status_code": \([0-9]\)')

  if [ ${is_up_status} -eq 1 ];
  then
    echo -e "\e[32m✓\e[0m \e[37m$1\e[0m \e[32mis up\e[0m"
  else
    echo -e "\e[31m×\e[0m \e[37m$1\e[0m \e[31mis down\e[0m"
  fi
}

alias is-up=is-up

is-up.sh

#!/bin/bash
# Simple (and nasty) bash alternative to https://github.com/sindresorhus/is-up

url="http://isitup.org/$1.json"
json=$(curl -s ${url})
status=$(expr "${json}" : '.*"status_code": \([0-9]\)')

if [ ${status} -eq 1 ];
then
  echo -e "\e[32m✓\e[0m \e[37m$1\e[0m \e[32mis up\e[0m"
else
  echo -e "\e[31m×\e[0m \e[37m$1\e[0m \e[31mis down\e[0m"
fi

I didn't bothered with escaping the special character or anything. It's ugly, it's nasty but it works and you don't need any fancy stuff around...

And yes, you don't have to use .bashrc, it works well in .zshrc too (tested as I use ZSH).