Twitch auto-record bash script

twitch.sh

# Dependencies: 
# jq      https://stedolan.github.io/jq/
# ffmpeg  https://ffmpeg.org/
# Usage:
# add to crontab schedule with command: twitch.sh [username] [oauth token]

USER="$1"
OAUTH="$2"
FFMPEG="ffmpeg" # change this if you have ffmpeg installed in other place
JQ="./jq" # change this if you have jq downloaded in other directory. By default, jq called from current directory.

CURRENT="current.m3u8"
FILE="file.m3u8"

RESP="`curl "https://api.twitch.tv/api/channels/$USER/access_token?adblock=true&need_https=true&platform=web&player_type=site&oauth_token" -H "Client-ID: $OAUTH" --compressed`"
TOKEN="`echo $RESP | $JQ '.token' | sed 's/\\\\"/"/g' | sed 's/\(^.\)//g' | sed 's/\(.$\)//g'`"
SIG="`echo $RESP | $JQ '.sig' | sed 's/\(^.\)//g' | sed 's/\(.$\)//g'`"

curl "https://usher.ttvnw.net/api/channel/hls/$USER.m3u8?sig=$SIG&allow_source=true&allow_spectre=true&player_backend=html5&expgroup=&baking_bread=false" -G --data-urlencode "token=$TOKEN" --compressed > $CURRENT

COMMAND="wc -l"
if [ "`cat $CURRENT | $COMMAND`" == "`cat $FILE | $COMMAND`" ]
then
    echo "idle"
else
    cat $CURRENT > $FILE
    FFREPORT=file=%t.log:level=32 $FFMPEG -protocol_whitelist file,https,tls,hls,tcp -i $FILE -c copy `date +%x_%X`.ts
fi