TSURUGI

Many special and hidden features have been implemented in Tsurugi Linux OS:

• A Write Blocker system has been enforced at kernel level to avoid device write access and integrity alteration

• Default configuration protection to prevent settings changes, potentially due to future updates, each time a user session starts, all values about device automount, device autorun and system hibernation options are put with default customized values

• In live mode, during the boot phase, it's possible to disable specific graphic drivers in case of visualization problems or potential crashes

• OSINT Profile Switcher (profile_switcher_tsurugi) it's a feature that allows to quickly switch from DFIR to OSINT profile
The difference is that the Tsurugi menu became lighter because are kept only a few categories useful for OSINT activities. To easily differentiate the two profiles the default wallpaper also changes

• An hidden feature allows to reset all menus and wallpapers (DFIR and OSINT profiles) to default values
(command line: profile_switcher_tsurugi --default)

• To be able to easily customize the OSINT menu by yourself, an hidden feature allows to clone and replace the OSINT menus with the DFIR menus (command line: profile_switcher_tsurugi --rebuild)

• A graphical dashboard is available on desktop with many real time information (if needed it's possible to reset it by “Dashboard reset” button or “dashboard” command on Command Line Interface)

• A Mouse keys switch function has been added to easily move the mouse pointer with only the keypad if needed. The on/off button is available on the Desktop

• Automatic set HI-DPI zoom for high screen resolution with more than 2560 pixels. There is an option, inside graphics menu, where you can switch to the original screen resolution

• In some particular cases, it's possible to find faulty or incompatible hardware that generates a huge quantity of error logs and so that, in live mode, saturates the memory. For this specific situation has been prepared a custom and dynamic logrotate configuration for the live mode that allows to work on this system despite this hardware problems and unload the RAM.