| Linux was developed in the 1990s by Linus Torvalds as a free and open-source alternative to Unix. | Unix was developed in the 1970s at Bell Labs |
| Linux is Open Source, and a large number of programmers work together online and contribute to its development. | Unix was developed by AT&T Labs, different commercial vendors, and non-profit organizations. |
| Linux, on the other hand, is open-source software and can be used freely without any licensing fees. | Unix is a proprietary operating system, meaning that it requires a license to use. |
| Linux kernal is Lightweight and modular | Unix kernal is Monolithic and complex |
| On the other hand, Linux is widely used on both enterprise and personal computers. | Unix is typically found on enterprise-level servers and workstations and is less commonly used on personal computers. |
| Linux has a large and active community of developers and users who contribute to its development and provide support. | While Unix also has a community, it is generally smaller and more focused on enterprise-level users. |
| It is an open-source operating system which is freely accessible to everyone. | It is an operating system which can only be utilized by its copywriters. |
| Threat recognition and solution is very fast because Linux is mainly community driven. So, if any Linux client poses any sort of threat, a team of qualified developers starts working to resolve this threat. | Unix clients require longer hold up time, to get the best possible bug-fixing,and a patch. |
| File system supports - Ext2, Ext3, Ext4, Jfs, ReiserFS, Xfs, Btrfs, FAT, FAT32, NTFS | File system supports - jfs, gpfs, hfs, hfs+, ufs, xfs, zfs |
| Linux provides two GUIs, KDE and Gnome. But there are many other options. For example, LXDE, Xfce, Unity, Mate, and so on. | Initially, Unix was a command-based OS, however later a GUI was created called Common Desktop Environment. Most distributions now ship with Gnome. |
| It is used everywhere from servers, PCs, smartphones, tablets to mainframes. | It is used on servers, workstations, and PCs. |
| The default interface is BASH (Bourne Again Shell). Anybody can use Linux whether a home client, developer or a student. | It initially used Bourne shell. But it is also compatible with other GUIs. Developed mainly for servers, workstations, and mainframes. |
| The source is accessible to the general public. | The source is not accessible to the general public. |
| Originally developed for Intel's x86 hardware processors. It is available for more than twenty different types of CPU which also includes an ARM. | It is available on PA-RISC and Itanium machines. |
| It has about 60-100 viruses listed to date. | It has about 85-120 viruses listed to date (rough estimate). |
| Some Linux versions are Ubuntu, Debian GNU, Arch Linux, etc. | Some Unix versions are SunOS, Solaris, SCO UNIX, AIX, HP/UX, ULTRIX, etc. |