Subsurface
Subsurface is an opensource diving logbook that runs on Linux, Windows and Mac. With this program, users can keep track of their dives by logging dive locations (with GPS coordinates), weights and exposure protection used, divemasters and dive buddies, etc. Subsurface also enables the users to rate their dives and provide additional dive notes.
Dives can be downloaded from a variety of dive computers, inserted manually or imported from other programs. A wide array of diving statistics and information is calculated and displayed, like the user’s SAC rate, partial pressures of O2, N2 and He, calculated deco information, and many more.
The dive profiles (and the tank pressure curves) can be visualized in a comprehensive and clean way, that provides the user with additional information on relative velocity (and momentary air consumption) during the dive. Subsurface also allows the user to print out a detailed log book that includes dive profiles and other relevant information. The program is localized in about 20 languages and well supported by an active developer community.
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Usage
Subsurface is available as an AppImage which means "one app = one file", which you can download and run on your Linux system while you don't need a package manager and nothing gets changed in your system. Awesome!
AppImages are single-file applications that run on most Linux distributions. Download an application, make it executable, and run! No need to install. No system libraries or system preferences are altered. Most AppImages run on recent versions of Arch Linux, CentOS, Debian, Fedora, openSUSE, Red Hat, Ubuntu, and other common desktop distributions.
Running Subsurface on Linux without installation
Unlike other applications, AppImages do not need to be installed before they can be used. However, they need to be marked as executable before they can be run. This is a Linux security feature.Behold! AppImages are usually not verified by others. Follow these instructions only if you trust the developer of the software. Use at your own risk!
Download the Subsurface AppImage and make it executable using your file manager or by entering the following commands in a terminal:
chmod +x ./*.AppImageThen double-click the AppImage in the file manager to open it.
Sandboxing Subsurface
If you want to restrict what Subsurface can do on your system, you can run the AppImage in a sandbox like Firejail. This is entirely optional and currently needs to be configured by the user.
Updating Subsurface
If you would like to update to a new version, simply download the new Subsurface AppImage.
The Subsurface AppImage also can be updated using AppImageUpdate. Using this tool, Subsurface can be updated by downloading only the portions of the AppImage that have actually changed since the last version.
Integrating AppImages into the system
If you would like to have the executable bit set automatically, and would like to see Subsurface and other AppImages integrated into the system (menus, icons, file type associations, etc.), then you may want to check the optional appimaged daemon.
Note for application authors
Thanks for distributing Subsurface in the AppImage format for all common Linux distributions. Great! Here are some ideas on how to make it even better.
Pro Tips for further enhancing the Subsurface AppImage
Thanks for shipping AppStream metainfo inside your AppImage. Please open a pull request on https://github.com/AppImage/appimage.github.io/blob/master/data/Subsurface if you have changed it and would like to see this page updated accordingly.
If you would like to see a donation link for the application here, please include one in the AppStream data.