The Bourne shell--yes, even the old classic one--provides us with an awk-like construct that is useful in this situation: the case statement. Combining a while loop and a case test can provide ...

These arrays employ numeric values — 1, 2, 3 and so on — as their indices. Since most scripting and programming languages start indexed arrays with element 0, we have done so in the examples ...

The last of the basic building blocks of shell scripting are conditional statements, allowing you to decide programmatically whether to execute a block of statements based on a logical test, and flow ...

The shell can be personalised by editing the prelude file, which allows you to overload functions for the prompt text, the incomplete prompt text (so you can implement intelligent completion ...