is a character string or a text expression. If argument might contain a special character or mnemonic operator, listed below, use %QSUBSTR. is an integer or an expression (text, logical, or arithmetic ...

There are quite a few ways to extract words and substrings from lines of text on a Linux system, replace them with other strings, select delimiters, and even get rid of white space at the beginning ...

The shell does far more than run commands. Here’s how Bash expands your input behind the scenes so you can write cleaner, ...

I have a few lengthy XML documents. I want to transform them to HTML documents. For some XML elements, I have substrings in the text node that I want to emphasize. I do not have the actual substrings, ...