Sams Teach Yourself Shell Programming in 24 Hours, Second Edition

Terms

Alias An abbreviation or an alternative name, usually mnemonic, for a command.

Function chaining The process of calling a function from another function.

Functions Provide a way of mapping a name to a list of commands. Functions are similar to subroutines and procedures in other programming languages.

Global scope If a variable has global scope, its value can be accessed from anywhere within a script.

Global variables Variables with global scope are referred to as global variables.

Local scope If a variable has local scope, its value can only be accessed within the function in which it is declared.

Local variables Variables with local scope are referred to as local variables.

Recursion A special instance of function chaining in which a ...