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Count the total number of hours of your music collection

 $ find . -print0 | xargs -0 -P 40 -n 1 sh -c 'ffmpeg -i "$1" 2>&1 | grep "Duration:" | cut -d " " -f 4 | sed "s/.$//" | tr "." ":"' - | awk -F ':' '{ sum1+=$1; sum2+=$2; sum3+=$3; sum4+=$4; if (sum4 > 100) { sum3+=1; sum4=0 }; if (sum3 > 60) { sum2+=1; sum3=0 }; if (sum2 > 60) { sum1+=1; sum2=0 } if (NR % 100 == 0) { printf "%.0f:%.0f:%.0f.%.0f\n", sum1, sum2, sum3, sum4 } } END { printf "%.0f:%.0f:%.0f.%.0f\n", sum1, sum2, sum3, sum4 }'

March 1, 2019, 9:09 p.m.pingiun