Gaston Festari's Learning Shell Scripting with Zsh PDF

By Gaston Festari

ISBN-10: 1783282932

ISBN-13: 9781783282937

Zsh has develop into quite well known in recent years and fairly so; the shell boasts a few fairly nice good points reminiscent of command final touch, filename iteration, and background sharing between situations of the shell. studying to take advantage of them for your virtue will end up to be quite necessary and should prevent from plenty of tedious and overly-complex tasks.

This hands-on advisor will provide help to configure and use zsh for paintings and day-by-day projects. It presents a transparent advent to the extra robust beneficial properties of the shell reminiscent of globbing and crowning glory. This publication may help you are taking good thing about the true energy in the back of the UNIX shell on either pcs and servers via real-world examples.

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Extra resources for Learning Shell Scripting with Zsh

Example text

This is particularly useful when dealing with "special characters" which have an additional meaning, such as $, and even an actual \ character. Take, for example, the following echo sentence: # this is wrong! % echo 'that's a quoted sentence for you' quote> The shell prompt indicates it's waiting for a quote character to be (properly) closed. The problem here is that we did not properly escape the apostrophe on "that's": % echo 'that\'s a quoted sentence for you' > that's a quoted sentence for you That's all nice and working, but what happens when we have a great number of escaping to do?

Just put a ! character together with the command you're looking for and let zsh work its magic. Word designators indicate the words of the command line that will be included in a history reference. What follows is a quick reference of the available designators: • • • • • ^: The first argument. $: The last argument. %: The most recent match for a given word. x-y: A range of words. Negative indexes like -i mean 0-i; thus, -1 would mean "the penultimate entry". *: All the arguments. Return null for events with just one word.

Probably one of the most awesome features of zsh. You know you want this. • SHARE_HISTORY: Shares history between different zsh processes. Another great option to compliment the previous entry. Summary In this chapter we had a look at some of the most prominent time-saving features of zsh. The purpose of this entry in our shell adventure was to start accomplishing more by typing less. Thus, this chapter focused on understanding aliases, how they work, and how to roll our own keystroke-saving definitions in a way that won't cause more trouble than what they attempt to solve.

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Learning Shell Scripting with Zsh by Gaston Festari


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