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#! /bin/sh
set -euf
target_folder=${target-./}
uri=$1
id=$(echo "$uri" | sed -n 's@^https\?://www\.youtube\.com/watch?v=@@p' | sed 's/#.*$//')
script=$(readlink -f "$0")
basedir=$(dirname $script)
mkdir -p $target_folder
if ! echo "$id" | grep -q .; then
echo "[31mbad uri: $uri[m" >&2
exit 23
fi
cd $target_folder
if file=$(ls | grep "[-]$id\\.mp3\$"); then
echo "already done: $file in $target_folder" >&2
exit
fi
youtube-dl -i -o "%(title)s-%(id)s.%(ext)s" --restrict-filenames -x "$uri" --add-metadata --audio-format mp3
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