How-To Geek on MSN

The 6 test patterns that real-world Bash scripts actually use

Check if a file is really a file, whether a string contains anything, and whether you can run a program with these vital patterns.
Ars Technica

Shell scripting question: the use of variables

Hi there,<br><br>I have seeing some shell script examples that use (use, not declare!) variables like this:<br><br><pre class="ip-ubbcode-code-pre">${VAR_1}</pre> <br ...