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What does port mean in context of a shell in unix?

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http://unix.stackexchange.com – From the book Advanced Programming in the Unix environment: Linux uses the Bourne-again shell for its default shell. In fact,/bin/sh is a link to /bin/bash.The default user shell in FreeBSD and Mac OS X is the TENEX C shell, but they use the Bourne shell for their administrative shell scripts because the C shell’s programming language is notoriously difficult to use.Solaris, having its heritage in both BSD and System V, provides all the shells shown in Figure1.2. Free ports of most of the shells area available on the Internet. What does the author mean by the term port her (HowTos)

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Submitted by Danial on 12/27/2012

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I have just started learning the fundamentals of Unix and wondering why there are so many shells in a unix like system .

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According to wikipedia, the Bourne shell was introduced in 1977 and C shell in 1978, but unix itself dates back to 1969.

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Some BASH Basics 2 years 6 weeks ago

Before we get ahead of ourselves, it would probably be a good idea to go over some BASH basics.Let's start at the beginning, OK? The Bourne Shell was born at AT&T's Bell Laboratories a while back. It was birthed by Steve Bourne, hence the name. The Bourne Again Shell (bash) is a direct descendent of the Bourne Shell (sh). It's very similar to the critter that Mr.

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What is the command to run additional available shells on top of default shell. I am using bash

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The command line is a powerful way to interact with a Linux computer. Instead of using the mouse, you just type commands into the shell. (The shell is a blank window where you type in your commands.) So for example, instead of clicking on your file browser, you simply type ls [enter] to display the contents of your working directory.

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