hmtimer is a graphical shutdown timer

hmtimer (Hsiu-Ming’s Timer) – graphical computer shutdown timer and more

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The program allows a specified period of time:

The time period can be set from 1 second to 99 hours with the possibility of repeating it multiple times (up to 99 times);
It is possible to protect with a password;
Integration with the system tray;
Optionally, an audio signal is enabled for the last 60 seconds of the timer: you can change the number of seconds or disable it;
It is possible to add the program to startup with the ability to minimize to the tray and configure the time period for starting the timer at system startup.

The software hmtimer is available for installation on Linux.

Installation method	OS
PPA	Ubuntu* 16.04/18.04/19.04/20.04, Linux Mint 18/19, Debian
Flatpak	Ubuntu, Linux Mint, Debian, Arch Linux, Fedora, CentOS, KDE Neon, openSUSE, elementary OS, Manjaro, Red Hat Enterprise Linux

*Ubuntu (GNOME), Kubuntu (KDE), Xubuntu (XFCE), Lubuntu (LXDE)

Install Software via PPA repository

sudo add-apt-repository ppa:cges30901/hmtimer
sudo apt-get update
sudo apt-get install hmtimer

Install Software via Flatpak package

flatpak install flathub io.github.cges30901.hmtimer

Language Interface:	English, Russian, Deutsch, Spanish, French and others
Description version:	3.1.0
Developer:	Hsiu-Ming Chang
Programming language:	C++
License:	GPL v3
Software website:	cges30901.github.io/hmtimer-website