Convert FLAC to OPUS

convert.sh

#!/usr/bin/env bash
set -em
cd $(dirname $0)

rm -f *.opus
for i in *.flac 
do 
opusenc --bitrate 160 "$i" "$(echo $i | sed "s/.flac//g")".opus
mv -v *.opus ../opus
done

start.sh

########################################
# 1) chmod +x start.sh convert.sh
# 2) watch -n .1 ls songs/opus
# 3) time sh start.sh
########################################

#!/usr/bin/env bash
set -em
cd $(dirname $0)

function do_sleep() {
  local -r wait_for_file=$1
  while true; do
    pwd > /dev/null
    if [[ ! -f $wait_for_file ]]; then
      break;
    fi
    pwd > /dev/null
  done
}

rm -f *.running
rm -f *.out

clear
if [ ! -d "songs" ]; then
mkdir songs
fi

cd songs
rm -rf opus
mkdir opus

if [ ! -d "flac_1" ]; then
mkdir flac_1
fi
if [ ! -d "flac_2" ]; then
mkdir flac_2
fi
if [ ! -d "flac_3" ]; then
mkdir flac_3
fi

cp ../convert.sh flac_1/
cp ../convert.sh flac_2/
cp ../convert.sh flac_3/

echo 'Folders created. Press CTRL C to exit.'

cd flac_1
if [[ $(find . -maxdepth 1 -type f -name '*.flac' | wc -l | tr -d ' ') -lt 0 ]]; then
  echo 'Please copy the FLAC songs to the flac_1 folder!'
  exit 0
fi
cd ..

cd flac_2
if [[ $(find . -maxdepth 1 -type f -name '*.flac' | wc -l | tr -d ' ') -lt 0 ]]; then
  echo 'Please copy the FLAC songs to the flac_2 folder!'
  exit 0
fi
cd ..

cd flac_3
if [[ $(find . -maxdepth 1 -type f -name '*.flac' | wc -l | tr -d ' ') -lt 0 ]]; then
  echo 'Please copy the FLAC songs to the flac_3 folder!'
  exit 0
fi
cd ..

sh flac_1/convert.sh > flac_1.running && \
  rm -f flac_1.running & 

sh flac_2/convert.sh > flac_2.running && \
  rm -f flac_2.running &

sh flac_3/convert.sh > flac_3.running && \
 rm -f flac_3.running & 

do_sleep 'flac_1.running' && \
  do_sleep 'flac_2.running' && \
    do_sleep 'flac_3.running'