Yes
It means that Linux is a kernel for Linux-based operating systems. In the strictest sense, Linux itself is only the kernel, however I tend to view it as a full operating system core due to how most kernel spece works (Which tends to include not just the kernel, but most device drivers.).
The kernel in Unix-based operating systems like Linux is called the "Linux kernel." In Windows Vista, the kernel is known as the "Windows NT kernel." Each kernel serves as the core component of the operating system, managing system resources, providing essential services, and facilitating communication between software and hardware components.
The Linux kernel.
There are many open-source operating systems. They include:AROSContikiDarwin (the core of Mac OS X)ECosFreeBSDFreeDOSGeckOSGNU HURDHaikuJNodeJXKolibriOSLUnix (not to be confused with Linux)MonaNetBSDOberonOpenBSDPlan 9ReactOSSyllableSystems based on the Linux kernel (Ubuntu, Debian, RHEL, Fedora)Systems based on the OpenSolaris kernel, including Nexenta and Belenix
Kernel is the core component of any operating system whereas root is the super user in Linux OS.
Kernel
Mac OS X uses a Mach kernel and FreeBSD utilities at it's core.
kernel
The "kernel".
The Kernel
The kernel is the core of the operating system.It is loaded into memory when the system is booted and communicates directly with the hardware.Users programs that need to access the hardware,use the services of kernel,which performs the job on user's behalf.
Linux *is* an operating system (In the strictest sense, it's a kernel, but since an OS core, unless it's in a microkernel-driven environment, can only be based on its kernel, Linux is still effectively the OS core as well as the kernel.), so it can only be used as an operating system.I am assuming this question is "Can Linux be used as an operating system *on* personal computers?" And the answer is yes!The Linux operating system is fully capable of running a PC, and there are countless GNU-based userspaces built on the Linux operating system to make desktop-focused Linux distributions, such as Ubuntu, Mint, or Fedora.These days, the hardware support in Linux is just as solid as Windows on PCs, so chances are you launch a Linux distribution on even a new machine, it'll have all your hardware working out of the box.