Tag Archives: Desktop

More Image Magick

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In May last year I wrote a post about ImageMagick and some neat features. Now I think it is time for some more features. I was browsing the net on the hunt for some additional feature I like to post on my blog. I showed you the commands mogrify and convert. Convert has some additional option I like to show you.

As you might remember we can use convert to actually convert one format for example png to jpg like this:

convert mypicture.png mypicture.jpg

we can also reduce the picture quality:

convert mypicture.png -quality 75 mypicture.jpg

this will reduce the output picture to a 75% of its original. You can also resize a picture to a specified dimension:

convert mypicture.jpg -resize 640×480 mypicture.jpg

the problem with the command above it the imagemagick tries to preserve the original aspect ratio and make it fit within the specified dimension but if you like to break that and force it to convert is in the desired dimension use the command as followed:

convert mypicture.jpg -resize 640×480! mypicture.jpg

Now lets say you took a picture while you flipped the camera in a 90% angle, with the command below you can rotate the picture clockwise.

convert mypicture.jpg -rotate 90 mypicture.jpg

It’s time for the real cool stuff. ImageMagick provides also effects.

convert mypicture.jpg -charcoal 3 mypicture.jpg

This for example applies the charcoal effect with an intensity of 3. Then there is the implode effect.

convert mypicture.jpg -implode 2 mypicture.jpg

You can also combine all of those together if you like. If you like to know more about ImageMagic and it’s command line function check out this link.

I hope you enjoyed this quick and dirty post. If you know something cool you can do with ImageMagick let me know.





Ubuntu 12.10 in easy steps

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I thought it is time to give our newbies some help. I created a little manuscript that will walk you through the steps of downloading and installing Ubuntu 12.10. This manuscript guides you through everything on a default installation like how to find you programs, install new programs and how to configure some of the settings. Please feel free to download the manuscript and pass it on.


How to tell who is logged in on your Linux Server

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In this short video I demonstrate how you can figure out who is logged in on your Linux Servers. I am going over 4 commands that should be available for your Linux System. In my case I needed to install the command finger since it was not pre-installed. In order to install the command finger just type in:

sudo apt-get install finger

and hit enter. This will install it and it should be available right away. The other commands I am using in this video are: who, last and lastlog. If you like to know more about those commands just type in man <name of command> and hit enter and it should present you with the manual page for the command.

Enjoy watching this video and leave comments if you know other ways of accomplishing this task. Thanks


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