- GTK versionsudo apt updatesudo apt install doublecmd-gtk [ Execution log ]gangserver@TCM73-U260816:~$ sudo apt install doublecmd-gtk[sudo: authenticate] Password:The following package was automatically installed and is no longer required: grub-pc-binUse 'sudo apt autoremove' to remove it.Installing: doublecmd-gtkInstalling dependencies: doublecmd-common libgail-common libgtk2.0-0t64 lib..