Command Line Basics: View Files With cat

August 21, 2009 by · 3 Comments
Filed under: command line, HowTo, linux 

Oakley the CatThere are many ways to view files in GNU/Linux. One of the simplest command line tools for viewing files is cat. The cat command, short for concatenate, is actually intended for joining multiple files into one, but it works equally well for viewing text files. Read more

Batch Watermark Images in Linux

August 16, 2009 by · 16 Comments
Filed under: bash, HowTo, linux, web development 

I previously wrote up a post showing how to watermark images in Linux with ImageMagick. Without too much work you can write a script to do batch processing of your images. This way you can watermark a whole directory of images at once. Read more

Nautilus Script to Launch a Terminal

August 12, 2009 by · 5 Comments
Filed under: bash, gnome, HowTo, linux, Ubuntu 

I often find myself browsing my filesystem with Nautilus (the GNOME file manager) and wanting a terminal window to manipulate files in the current directory.  I decided to take a shot at writing my own Nautilus script to solve the problem. So here's my first Nautilus script. Save it in $HOME/.gnome2/nautilus-scripts. I named it terminal-here on my system. Read more

Bash to Basics: Read User Input

June 30, 2009 by · Leave a Comment
Filed under: bash, HowTo, linux 

In a previous Bash to Basics, I already showed how to print output to the terminal with the echo command. Today I'm going to show how to read input from the user and store it in a variable. We can then use that variable to print the text back to the terminal with the echo command. Read more

Bash to Basics: Bash Rocket Science

June 10, 2009 by · 1 Comment
Filed under: bash, HowTo, linux, Ubuntu 

Last time in Bash to Basics I showed how to print text to the terminal with the echo command. This got me thinking about the first program I wrote when I was in fourth grade. I was fortunate enough to be in a school district that had computers in the early '80s. If you're around my age, then you may remember the mighty Commodore PET computer.

Some of us were put into a program to learn BASIC programming. The first program we were taught to write made a rocket ship fly up the screen by using Print statements. It looked something like this: Read more

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