Linux and Unix and their variants have several different ways of locating files. each of the below commands can be used to locate files.findlocatewheriswhich
Yes, Unix has several variants of Graphical User Interfaces that may be used instead of the command line if the user wishes it.
Nagios was designed to run on Linux; however, it also runs on other Unix variants.
The reason for the exec functions being same/similar is because the Mac OS has its roots in variants of the Unix kernel.
Unix is one of the oldest but still most popular Operating Systems. It was invented in 1969 at AT&T Bell Labs by Ken Thompson and Dennis Ritchie. All the contemporary operating systems of Solaris, HP-UX, Linux, AIX are variants of Unix.
The advantage to being able to modify Unix (or Linux, etc.) is that you can customize it to your liking, and in the case of Linux and its variants you can sell the changes. The disadvantage would be support; if you make a change you are responsible for fixing any problems that may develop.
There are two major types: Windows and operating systems that derived from Unix. OS X is Unix-like because it's based on Darwin which is BSD, another Unix-like operating system family, which are cousins to Linux (which itself has over 300 variants)
Logically, for all intents and purposes the functionality of the JVM is the same in Windows and other operating systems, including Linux, Unix (and variants), z/os, etc. A Java program utilizing the JVM will run the same way on all the different platforms.
The original UNIX was an operating system developed by Bell Labs in the early 70's. What makes UNIX significant is that many of the ideas that were part of it became standards in computers, even today. As time passed, those standards evolved, and became the basis for a number of newer systems, such as BSD, Linux, and even Mac OS X. Since they share similar standards they are called "UNIX variants". In 1992, Linux was created. What makes Linux different from many of the other UNIX variants is that no one owns Linux, and it is essentially "community property". It has been freely adapted for many purposes. Linux "distributions" are versions of Linux that are tailored for a specific audience. Since no one person's needs are exactly the same, there are many different versions to choose from. They are the same operating system, just with different things added.
Some of your options are as follows: Open Solaris. It is based on Sun's Solaris Unix operating system. You can get it from http://opensolaris.org/os/ FreeBSD livecd http://livecd.sourceforge.net/ However, if your only goal is to learn shell scripting all the Linux/Unix variants use the same shells (usually some version of bash, sh, csh, tcsh, or zsh). The bash shell is the same if ran on Linux, Unix, or even Windows.
Unix is one of the oldest but still most popular Operating Systems. It was invented in 1969 at AT&T Bell Labs by Ken Thompson and Dennis Ritchie. All the contemporary operating systems of Solaris, HP-UX, Linux, AIX are variants of Unix.
UUCP is the abbriviation of Unix to Unix copy. It is worldwide email system called UUCP or Unix to Unix copy.This email system was developed for the operating system called Unix.