```sh
#scheduled stream tracker for youtube
#lists only the current live or the soonest premiering stream per channel

#required arguments: channels_file invidious_instance
#output is stored in out.txt, use grep and sort to filter accordingly
#sample run: sh trackstreamyt.sh channels.txt https://invidious.privacydev.net; grep ^Live out.txt; grep minute out.txt | sort; grep hour out.txt | sort

#channels_file contains a list of channel ids
#sample content 
#UCqfVP-d0Flj_ygWJ9m8gHMQ
#UCIoRFfQdwgErIokdU4Zb-Sg
#UCejbicoRnQjCOdAPAv5JPwg
#last line is empty (hit enter on the last channel id or else it will not be read)

#tested with the following invidious instances
# https://vid.puffyan.us
# https://invidious.privacydev.net
#for other instances go to invidio.us
#check first if the url loads properly in the browser

#recommended run schedule is every 45th minute of the hour
#because the hour indicated is the floor value
#"Premieres in 1 hour" means stream will start in around 1-2 hours

infile="$1"
invidious="$2"

echo "Start: "`date` | tee out.txt
echo "----------------------" | tee -a out.txt
cat "$infile" | while read ch
do
curl "${invidious}/channel/${ch}/streams" | grep -B60 ">0 view" | tail -60 > info.tmp
if test -s info.tmp
then
url=`grep "Watch on YouTube" info.tmp | cut -d'"' -f4 | cut -d'/' -f4`
time_info=""
if grep -q Shared info.tmp
then time_info="Live : A LITERAL 0 VIEW VOD"
else time_info=`grep  Premieres info.tmp | cut -d'>' -f2 | cut -d'<' -f1`
fi
echo "${time_info} + "`grep channel-name info.tmp | cut -d'>' -f2`" + "`grep "a href=\"/${url}\"" info.tmp | cut -d'>' -f3 | cut -d'<' -f1`" + https://www.youtube.com/${url}" >> out.txt
fi
done
sed -i "s/^ /Live /" out.txt
echo "----------------------" | tee -a out.txt
echo "End: "`date` | tee -a out.txt
echo
echo
```