Unix

The latest articles related to Unix

Unix security – Services

Unnecessary system software should not be installed or configured on a system. Software which is no longer required should be removed completely, if possible. *Identify what services are running **netstat -na **lsof **nmap **sockstat -4 (FreeBSD) The commands inetd and xinetd act as super-servers for a variety of network protocols such as rlogin, telnet and [...]

Head (Unix) – Introduction

head is a program on Unix and Unix-like systems used to display the first few lines of a text file or piped data. The command syntax is: head [options] By default, head will print the first 10 lines of its input to the standard output. The number of lines printed may be changed with a [...]

National Capital Freenet – History

;General In many ways the history of NCF parallels that of the internet itself. In the early 1990s NCF was the region’s only service provider and members flocked to it to take advantage of the new technology. Due to its volunteer and donation-based model the organization failed to keep up with the rapid technological changes [...]

Tru64 UNIX – Introduction

Tru64 UNIX is a 64-bit UNIX operating system for the Alpha instruction set architecture (ISA), currently owned by Hewlett-Packard (HP). Previously, Tru64 UNIX was a product of Compaq, and before that, Digital Equipment Corporation (DEC), where it was known as Digital UNIX (formerly DEC OSF/1 AXP). As its original name suggests, Tru64 UNIX is based [...]

Tru64 UNIX – OSF/1

In 1988, during the so-called “Unix wars”, DEC joined with IBM, Hewlett-Packard, and others to form the Open Software Foundation (OSF) to develop a version of Unix. Dubbed OSF/1, the aim was to compete with System V Release 4 from AT&T and Sun Microsystems, and it has been argued that a primary goal was for [...]

Unix shell – Bourne shell

The Bourne shell was one of the major shells used in early versions of the Unix operating system and became a ”de facto” standard. It was written by Stephen Bourne at Bell Labs and was first distributed with Version 7 Unix, circa 1977. Every Unix-like system has at least one shell compatible with the Bourne [...]

Nl (Unix) – Introduction

nl is a Unix utility for numbering lines, either from a file or from standard input, reproducing output on standard output. It has a number of switches: *a – number all lines *t – number lines with printable text only *n – no line numbering *string – number only those lines containing the regular expression [...]

OTRS – Technology

Since its beginnings OTRS has been implemented in the programming language Perl. The web interface is made more user-friendly by using JavaScript (which can be switched off for security reasons). Different functionalities are implemented as reusable backend modules, making it possible to create custom modules to extend the functionality of the OTRS system. The web [...]

Unix – Components

The Unix system is composed of several components that are normally packed together. By including — in addition to the kernel of an operating system — the development environment, libraries, documents, and the portable, modifiable source-code for all of these components, Unix was a self-contained software system. This was one of the key reasons it [...]

Unix wars – Origins

In the mid-1980s, the two common versions of Unix were BSD, from the University of California, Berkeley, and System V, from AT&T. Both were derived from the earlier Version 7 Unix, but had diverged considerably. Further, each vendor’s version of Unix was different to some degree. A group of vendors formed the X/Open standards group [...]









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