Very helpful when unsure on using the type of comparison operators and brackets to use in bash.
bash
Writing Robust Shell Scripts
(via www.davidpashley.com)
Many people hack together shell scripts quickly to do simple tasks, but these soon take on a life of their own. Unfortunately shell scripts are full of subtle effects which result in scripts failing in unusual ways. It's possible to write scripts which minimise these problems. In this article, I explain several techniques for writing robust bash scripts...
Variable Mangling in Bash with String Operators
(via www.linuxjournal.com)
Have you ever wanted to change the names of many files at once? Or, have you ever needed to use a default value for a variable that has no value? These and many other options are available to you when you use string operators in bash and other Bourne-derived shells...
Handling files with spaces
(via unixjunkie.blogspot.com)
Typical Unix users cringe at the thought of putting spaces in file names. Mac users, on the other hand, frequently put spaces in file names because it's natural and may read better. This means that Mac OS X Unix geeks need to make sure their shell commands (and shell scripts) work correctly when faced with spaces in file names. Below is outlined a few simple ways to properly deal with this...
