Different Unix and Unix-like systems have different ways of installing software. Some require just dropping the binary into /usr/bin. Others require additional libraries to be installed. These libraries can be difficult to install manually, so many systems have what is called a "package manager", which automatically install the programs and needed libraries.
The RPM package manager is not used in Unix; it is used in Red-Hat enabled systems or systems derived from Red-hat such as Centos.
Yes, Unix is system software. It is a kind of operating system.
To install from source, you may have to use ./configure make make install each in case the server is a unix server
It is possible to use BSD software on Unix systems. It is possible but many do not and they use other softwares on Unix systems beside the BSD software.
Unix is an multitasking, multi-user computer operating system developed by AT&T. It is currently owned by The Open Group. The Unix operating system was originally intended to be used for developing software.
Unix is the name of an Operating System (software) and Cisco is the name of a technology company.
The inherent problem in ing your question is that there is no single operating system known as "Unix." Unix is a specification for a large number of operating systems to meet and comply with. The installation for Solaris is different from that of AIX, which is different from that of TRU64. In order to receive a definitive , you would need to define which Unix you are trying to install.
To create a Free OS like the UNIX Operating System, They wanted to create a system that was like UNIX without all of the intellectual property issues that UNIX had. (UNIX was proprietary software).
Pine is a third-party software package that does not come with Unix or Linux; it has to be installed. It was written for a beginner in mind so that they didn't have to know a lot about the Unix environment when using mail. Mailx is a standard Unix mail client that is typically supplied with a Unix install. It is somewhat easy to use but requires the user to know how to use an editor such as 'vi' and to use somewhat arcane means of answering mail.
There are many mail clients available for Unix. These include mutt, fetchmail, getmail, and pine.
Unix, Linux, windows and compilers etc.
Unix and Linux