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Linux Shell Scripting Essentials
book

Linux Shell Scripting Essentials

by Sinny Kumari
November 2015
Beginner content levelBeginner
282 pages
5h 5m
English
Packt Publishing
Content preview from Linux Shell Scripting Essentials

Indexed arrays and associative arrays

Bash provides a feature to declare a list (or array) of variables in a one-dimensional array that can be an indexed array or associative array. The size of an array can be 0 or more.

Indexed arrays

An indexed array contains variables that may or may not have been initialized continuously. Indices of an indexed array start from 0. This means that the first element of an array will start at an index 0.

Array declaration and value assignment

An indexed array can be declared by just initializing any index as follows:

array_name[index]=value

Here, an index can be any positive integer or an expression must be evaluated to a positive integer.

Another way of declaring is by using the declare shell built in as follows: ...

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Publisher Resources

ISBN: 9781785284441Supplemental Content