Basic Difference between Linux and Unix

Factors	Linux	Unix
Development	Linux was developed by Linus Torvalds in 1991	Unix was developed by Dennis Ritchie and Ken Thompson at Bell Labs in 1969
Cost	Linux is a free open source i.e. sharing of source code and it is distributed by various vendors	Unix Systems are divided by various commercial vendors
Usage	Linux can be installed on various hardware ranging from mobile to super computers	Unix OS can be installed on internet servers, workstations and PCs
File System Supported	Ext2,Ext3,Ext4,Xfs,FAT,FAT32,NTFS	Jfs,gpfs,xfs,hfs,hfs+,ufs,zfs formats
Shell	BASH(Bourne Again SHell)is the default linux shell,there are different shell which includes CSH,TCSH,KSH	Originally the Bourne Shell. Now it's compatible with many others including BASH, Korn & C.
GUI	Linux typically provides two GUIs, KDE and Gnome. But there are millions of alternatives such as LXDE, Xfce, Unity, Mate, twm, etc.	Initially Unix was a command based OS, but later a GUI was created called Common Desktop Environment. Most distributions now ship with Gnome.
Security	Linux has had about 60-100 viruses listed till date. None of them actively spreading nowadays.	A rough estimate of UNIX viruses is between 85 -120 viruses reported till date.
Hardware Dependency	It supports x86 hardware, ports available for over two dozen CPU types including ARM	It is a hardware dependent based on the H/w manufacturer like HP,IBM etc..
Examples	Ubuntu, Fedora, Red Hat, Debian, Archlinux, Android etc	OS X, Solaris, AIX,IRIX etc