Shell Script Game

pljudge321

This thread is inspired by the traditional q&a threads.

The difference here is you post a shell script to achieve the task set by the before poster and then set a new task for the following poster.

I'd say keep it simple at first and then ramp up into slightly more complex stuff.
This will mean the thread could become a useful learning mechanism for the less
able of us, and allow some people to try their hand at their first script.

You can post a solution to the task not directly above you, but only if the task is completely out of your depth or you have a more elegant/creative solution to a previous task.

Task 1: Download the daily new cyanide and happiness comic and set it as the wallpaper. (Ubuntu Gnome, feel free to do other distros/desktop managers)

Skrynesaver

Stick this in a script and call from cron.

#!/bin/bash
if [ ! -d  /home/skrynesaver/tmp/bgdl ] ; then
   mkdir - p /home/skrynesaver/tmp/bgdl
fi
cd /home/skrynesaver/tmp/bgdl
rm index.html bgImage.png
wget http://www.explosm.net/comics/new/
wget -O bgImage.png $(grep -o '<img alt="Cyanide and Happiness, a daily webcomic" src="[^"]*' index.html.1 |awk -F'src="' '{print $2}' )
conftool-2 --direct   --config-source xml:readwrite:/etc/gconf/gconf.xml.mandatory   --type string   --set /desktop/gnome/background/picture_filename bgImage.png

Next up, assume you have received a collection of untagged mp3/ogg files from another OS which are in a tree

artist-
        |->Album
        ...
         |->Album
                      |->track
                      |->track

The names of the files and directories contain spaces, change all spaces to underscores in the filenames and prompt the user for the artist's genre, add this genre to the ID3Tag of each track.