tweet-at

#!/bin/bash
set -eu

if [ $# -ne 2 ]; then
  echo >&2 "usage: $0 UNIX_TIMESTAMP MESSAGE"
  exit 1
fi

if ! which t >/dev/null; then
    echo >&2 "t: command not found"
    # shellcheck disable=2016
    echo >&2 'Perhaps a `gem install t` or `rbenv rehash` is needed?'
    exit 2
fi

declare -i target

set -x

target="$1"
message="$2"

sleep $((target - $(date +%s)))

t update "$message"