Build m3u playlist magically

m3u_maker.sh

#!/bin/bash

dir=${1:-$PWD}

find "$dir" -type f -name "*.mp4" | sort | awk -F\/ '
  $7 ~ /^[0-9]{1,2}/ { 
    folder=gensub(/^[^0-9]*([0-9]+).*$/,"\\1","G", $7)
    idx=gensub(/^[^0-9]*([0-9]+).*$/,"\\1","G", $8)
    # arr[folder][length(arr[folder])+1]=$0 #auto incremental idx 
    arr[folder][idx]=$0
  } 
  END { for (i in arr) { for (j in arr[i]) { print arr[i][j] >> i".m3u" }}}
'



# | awk -v d="$dir" '{
#   row = gensub([^\/]+(\/), "", "$0")
#   print row
# }'

# awk -F\/ '$2 ~ /^[0-9]/ { arr[$2][length(arr[$2])+1]=$3 } END { for (i in arr) { for (j in arr[i]) {print i,"/",arr[i][j] } }}'