January 2001
Intermediate to advanced
480 pages
7h 22m
English
Content preview from Korn Shell: Unix and Linux Programming Manual, Third Edition, The
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Chapter 3. Variables and Parameters
Variables and parameters are used by the Korn shell to store values. Like other high-level programming languages, the Korn shell supports data types and arrays. This is a major difference with the Bourne, C shell, and other scripting languages, which have no concept of data types.
The Korn shell supports four data types: string, integer, float, and array. If a data type is not explicitly defined, the Korn shell will assume that the variable is a string.
By default, all variables are global in scope. However, it is possible to declare a local variable within a function. This is discussed in more detail later in this chapter. ...
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