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#!/bin/sh
# mpc_update: Update an mpd playlist to include new songs in the music
# directory.
yell() { echo "$0: $*" >&2; }
die() { yell "$*"; exit 111; }
try() { "$@" || die "cannot $*"; }
[ "$#" -ne 2 ] && echo "usage: mpc_update <playlist> <music directory>" >&2
PLAYLIST="$1"
MUSIC_DIR="$2"
[ -d "$MUSIC_DIR" ] && cd "$MUSIC_DIR" ||
die "music directory '$MUSIC_DIR' does not exist!"
# Clear the current playlist to prevent song duplication in mpd.
[ -e "$HOME/.local/share/mpd/playlists/${PLAYLIST}.m3u" ] &&
try mpc clear >/dev/null &&
try mpc rm "$PLAYLIST"
# Add every song in the music directory.
try mpc add -- *
try mpc save "$PLAYLIST"
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