1. Linux is a free open-source operating system based on Unix.

   Kernel is the Management Head in the Operating System, it provides secure access to the machine's hardware and decides for how much time the other softwares can use the hardware.

2. Linux (also known as GNU/Linux) is a Unix-like computer operating system. It is one of the most prominent examples of open source development and free software; unlike proprietary operating systems such as Microsoft Windows or Mac OS X, all of its underlying source code is available for anyone to use, modify, and redistribute freely.
   Initially, Linux was primarily developed and used by individual enthusiasts on personal computers. Since then, Linux has gained the support of major corporations such as IBM, Sun Microsystems, Hewlett-Packard, and Novell for use in servers and is gaining popularity in the desktop market.[1] It is used in systems ranging from supercomputers to mobile phones.

   The KERNAL is Commodore's name for the ROM-resident operating system core in its 8-bit home computers; from the original PET of 1977, via the extended, but strongly related, versions used in its successors; the VIC-20, Commodore 64, Plus/4, C16, and C128. The Commodore 8-bit machines' KERNAL consisted of the low-level, close-to-the-hardware, OS routines (in contrast to the BASIC interpreter routines, also located in ROM), and was user callable via a jump table whose central (oldest) part, for reasons of backwards compatibility, remained largely identical throughout the whole 8-bit series. The KERNAL ROM occupies the last 8K of the 8-bit CPU's 64K address space ($E000-$FFFF).

   The KERNAL was initially written for the Commodore PET by John Feagans, who introduced the idea of separating the BASIC routines from the operating system. It was further developed by several people, notably Robert Russell added many of the features for the VIC-20 and the C64.

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1. Linux is a free open-source operating system based on Unix.

   Kernel is the Management Head in the Operating System, it provides secure access to the machine's hardware and decides for how much time the other softwares can use the hardware.

2. Linux (also known as GNU/Linux) is a Unix-like computer operating system. It is one of the most prominent examples of open source development and free software; unlike proprietary operating systems such as Microsoft Windows or Mac OS X, all of its underlying source code is available for anyone to use, modify, and redistribute freely.
   Initially, Linux was primarily developed and used by individual enthusiasts on personal computers. Since then, Linux has gained the support of major corporations such as IBM, Sun Microsystems, Hewlett-Packard, and Novell for use in servers and is gaining popularity in the desktop market.[1] It is used in systems ranging from supercomputers to mobile phones.

   The KERNAL is Commodore's name for the ROM-resident operating system core in its 8-bit home computers; from the original PET of 1977, via the extended, but strongly related, versions used in its successors; the VIC-20, Commodore 64, Plus/4, C16, and C128. The Commodore 8-bit machines' KERNAL consisted of the low-level, close-to-the-hardware, OS routines (in contrast to the BASIC interpreter routines, also located in ROM), and was user callable via a jump table whose central (oldest) part, for reasons of backwards compatibility, remained largely identical throughout the whole 8-bit series. The KERNAL ROM occupies the last 8K of the 8-bit CPU's 64K address space ($E000-$FFFF).

   The KERNAL was initially written for the Commodore PET by John Feagans, who introduced the idea of separating the BASIC routines from the operating system. It was further developed by several people, notably Robert Russell added many of the features for the VIC-20 and the C64.