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#!/sbin/sh case "$(echo "$1" | rev | cut -d'.' -f1 | rev)" in "mp3") mid3v2 -l "$1" | awk 'xor(/^TPE1/,/^TALB/) {printf (NR%2==0) ? $0 "\n" : $0 "|"}' | sed 's/TPE1=//;s/TALB=//' ;; "ogg") echo "ogg" ;; "*") echo "Unknown type" ;; esac