Distro similarities
All Linux distributions use the Linux kernel and benefit from updates that are made to the operating system core software and processes. They all use standard Linux commands like cd, ls, rm, and cp to navigate the directory structure. They also include many familiar commands like find, grep, tail, more, cat, and ps. All Linux versions have similar commands to add and remove users, move files around, and interact with external devices with device drivers. The Linux community has also standardized on LibreOffice as the productivity suite, which often comes installed by default.
Most Linux system use systemd as their init system, process management, and system manager. Administrators use the systemctl command to control how it is configured and start, restart, enable, disable, reload, or check the status of services running on the operating system.