The bash man page has long had the following bug listed: "It's too big and too slow" (at the very bottom of the man page). If you agree with that, then you probably won't want to read about the "new" ...

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 ...

Historically, operating systems generally come with some form of scripting language which admins and power users can use to create custom tools. Harking back to the home computer craze of the 1970s ...

It is easy to dismiss bash — the typical Linux shell program — as just a command prompt that allows scripting. Bash, however, is a full-blown programming language. I wouldn’t presume to tell you that ...

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.