Modifications needed Ubuntu 20.04

[ceedjay]

Make sure nginx can access /usr/share/nginx/streamRIP:
chown nobody /usr/share/nginx/streamRIP

change ffmpeg to /usr/bin/ffmpeg in nginx_start.sh:
/usr/bin/ffmpeg -loglevel warning -f mpegts -i $pfi -c copy -bsf:a aac_adtstoasc -f flv -rtmp_live live $rtmpe

add bash after exec in .conf file:
exec_static bash /usr/share/nginx/streamRIP/nginx_start.sh;
exec_publish bash /usr/share/nginx/streamRIP/publish_start.sh;
exec_publish_done bash /usr/share/nginx/streamRIP/publish_stop.sh;