systemd で目覚まし時計

howtouse.sh

mkdir -p ~/.config/systemd/user
cd ~/.config/systemd/user
vi mezamashi.service mezamashi.timer
systemctl --user daemon-reload
# 音が鳴るか確認するには下記を実行
# systemcti --user start mezamashi.service
# systemcti --user stop mezamashi.service
systemctl --user enable mezamashi.timer

mezamashi.service

[Unit]
Description=Mezamashi
ConditionPathExists=/home/hoge/mezamashi.wav

[Service]
ExecStart=/usr/bin/ffplay -loop 0 -nodisp "/home/hoge/mezamashi.wav"

mezamashi.timer

[Unit]
Description=Mezamashi Timer
[Timer]
OnCalender=10:00:00
[Install]
WantedBy=timers.target