Exploring data, one index at a time.

One of the most convenient ways to manipulate information in scripts is to store it in an array. Arrays facilitate looping through lists of related values, keeping track of an ever changing number of ...

If you're used to a "standard" *NIX shell you may not be familiar with bash's array feature. Although not as powerful as similar constructs in the P languages (Perl, Python, and PHP) and others, they ...

Clearly one of the best features of disk arrays is that they can continue working even when a disk has failed. One of the problems, however, is that you might not notice when a disk fails, and thus, ...

In Bash, a hash is a data structure that can contain many sub-variables, of the same or different kinds, but indexes them with user-defined text strings, or keys, instead of fixed numeric identifiers.

Creating a sed-based file substitution tool. A few weeks ago, I was digging through my spam folder and found an email message that started out like this: Dear #name# Congratulations on winning the $15 ...