For many users, there was a problem accessing the Internet without installing an antivirus program, or many users without hesitation click on links sent to them in spam or on suspicious sites. As a result, they get problems related to viruses and trojans. But the occurrence of such problems for owners of Apple computers with Mac OS X is almost impossible even for beginners. Since this operating system is based on Unix (Darwin core, in accordance with the POSIX standard), it is much better protected from malicious software than is familiar to most Windows users. Therefore, almost none of the users of OS X does not install antiviruses on their computer - they simply do not need them!
The first version of the Unix operating system was created in 1969, when graphic monitors and various manipulators were not used to enter data. And the keyboard was the most advanced input device. Therefore, to increase productivity, various key combinations were widely used - the so-called "hot keys". And modern versions have retained this feature. Using hot keys it is very often possible to perform certain actions much faster than using a mouse or trackpad. They are also used by Mac OS X, here is their main list ( )
The settings of the operating system are usually stored in plain text files, but with the installed protection of rights and very often these files are hidden from ordinary users. You can view them in the terminal.app management program and there you can enable their display for the standard Finder file management program ( )
Since Unix was originally a multi-user and multi-tasking operating system, many server functions are built into it initially. So, in the modern version of Mac OS X, initially there is a web server, ftp server, but since many users do not need them, they are disabled by default. And those who need them can simply turn them on with the necessary commands in the terminal. There is a version of Mac OS X Server that differs from the standard version with additional programs that improve server management and expand its server capabilities.
For those users who cannot completely refuse to use programs developed for Windows, there are special programs that allow you to install Windows in a virtual environment and use programs developed for both Mac and Windows on the same computer. The most famous such programs are Parallels and VMware Fusion.