Shooting in RAW format is great for the photography buff. However, when it is time to share with others, post on your photo gallery, or print at the local photo printing shop, you want something more portable. Here we'll look at converting RAW photos (specifically Canon's CRW format) into JPEGs using a batch command-line approach in BASH.

How to set, and reset, traps at the command line, and login, level to enhance system security.

"Computerworld is undertaking a series of investigations into the most widely-used programming languages. Previously we spoke to Alfred v. Aho of AWK fame, and in this article we chat to Chet Ramey about his experience maintaining Bash. Bash, or the Bourne-Again Shell is a Unix shell created in 1987 by Brian Fox.

When working with regular expressions in a shell script the norm is to use grep or sed or some other external command/program. Since version 3 of bash (released in 2004) there is another option: bash's built-in regular expression comparison operator "=~".

The command line. It strikes fear in the hearts of many a new Linux user. They open their terminals reluctantly, and there the prompt sits, with the cursor blinking in rhythm with their racing hearts.

"...So, there are a few tips to get your bash history more managable - if you have any extra tips, add them to the comments and I’ll add them to the main article! ..."

When invoked without arguments, the date command displays the current date and time. Depending on the options specified, date will set the date and time or print it in a user defined way. I’ve seen many people writing a perl script for calculating yesterday or tomorrow. Computer loves numbers but we love relative terms like 2 days ago.