UNIX class operating system getting Started _unix Linux

Because of the well-known stability and reliability of Unix operating systems, the computers used to provide a wide range of Internet services run a large percentage of Unix and Unix-like operating systems, requiring a large number of skilled UNIX-type operating system applications. The most common Unix-like operating systems running on PCs are Linux, BSD Unix, Solaris x86, SCO Unix, and more. Some beginners for the various types of UNIX system features unfamiliar, do not know how to choose, this article mainly introduces several free Unix, and how to obtain the appropriate learning resources.

Linux

Linux is an operating system developed in accordance with the POSIX specification and maintains compatibility with BSD Unix and Unix Systemⅴ. Linux has many distributions, more popular are: RedHat Linux, Debian Linux, SuSe Linux, Mandrake Linux, Redflag Linux and so on.

Linux has the advantages of Unix: stable, reliable, secure, with strong network capabilities. With the support of relevant software, can realize www, FTP, DNS, DHCP, e-mail and other services, but also as a router, using Ipchains/iptables can build NAT and full-featured firewall.

Various distributions of Linux are generally available for free download over the Internet. There are also a lot of books on Linux that can be found in a number of online bookstores to find information about a lot of Linux books.

Freebsd

Since the 1969 At&&t Bell Laboratory researchers created UNIX, UNIX has developed into one of the mainstream operating systems so far. During the development of UNIX, the two main trends of BSD Unix and Unix Systemⅴ were formed. BSD Unix developed in the development of different development organizations, respectively, generated FreeBSD, NetBSD, OpenBSD and other BSD Unix. Compared with NetBSD and OpenBSD, FreeBSD has the most active development and the largest number of users. NetBSD can be used for a variety of hardware platforms, including Intel platforms. OpenBSD is characterized by special attention to operating system security.

FreeBSD as a network server operating system, can provide a stable, efficient www, DNS, FTP, e-mail and other services, can also be used to build NAT servers, routers and firewalls.

FreeBSD has two development branches, Freebsd-current and freebsd-stable. The former includes the developing, experimental procedures, this is a developing version, immature, not suitable for production use. Most of the users are FreeBSD development testers and FreeBSD enthusiasts. The latest version of the current branch is FreeBSD 5.1-release. Freebsd-stable is a stable version, the experimental or not tested features will not appear on this branch. This version is available for production servers. The latest version of the current branch is FreeBSD 4.8-release.

About FreeBSD Books, the market can see the "FreeBSD Technology Insider", "FreeBSD Handbook (second edition) Chinese version", "FreeBSD use Daquan (second edition)" and so on.

Solaris x86

Solaris is an enterprise-class operating environment developed and released by Sun, with a Solaris x86 system running on the Intel platform and a system running on a SPARC CPU structure. It originated in BSD Unix, but gradually shifted to the Systemⅴ standard. In the server marketplace, Sun's hardware platform is highly available and highly reliable, and Solaris is the dominant UNIX-class operating system in the marketplace today. Solaris 8 x86 and Solaris 9 x86 two versions of the currently popular computer running on the x86 architecture are available for download from Sun's official website or from some other sites home and abroad. Users who have difficulty contacting Sun SPARC Architecture computers can experience the commercial UNIX presence of world-renowned manufacturers by using Solaris x86. Of course Solaris x86 can also be used for servers that actually produce applications. In compliance with Sun's license terms, Solaris x86 can be used for study or business applications free of charge. There are still more books on Solaris 8 and Solaris 9 in the country, and a lot of books on Solaris can be found from some online bookstores. (Source: China computer Education newspaper)