markdown-telegram.sh

#!/bin/sh

# CONFIGURATION
# 1. Go to @botfather and create a bot and use it's auth token as bot_token value 
# 2. Create test channel, believe me, you need it
# 3. Set some url for your test channel
# 4. Add your bot to both channels, set their names in variables

# USAGE
# 1. Copy your markdown-formatted message into OS clipboard (Cmd+C)
# 2. Run markdown-telegram.sh to receive your message in test channel
# 3. If everything is OK, run it again, this time as ./markdown-telegram.sh production

bot_token=YOUBOTTOKENHERE
test_channel=YOURTESTCHANNELHERE
production_channel=YOURPRODUCTIONCHANNELHERE

error () {
	echo $1 >&2;
	exit 1
}
[ $bot_token ] || error "configure \$bot_token"
[ $test_channel ] || error "configure \$test_channel"
[ $production_channel ] || error "configure \$production_channel"

channel=$test_channel
[ $1 ] && [ $1 = production ] && channel=$production_channel

## Request
curl -X "POST" "https://api.telegram.org/bot$bot_token/sendMessage" \
     -H "Content-Type: application/x-www-form-urlencoded; charset=utf-8" \
     --data-urlencode "text=`pbpaste`" \
     --data-urlencode "chat_id=@$channel" \
     --data-urlencode "disable_web_page_preview=true" \
     --data-urlencode "parse_mode=markdown"