GNU/Linux

This is a cool tip from Linux Journal

Basically you do an ssh session, throw in the C and X switches and specify what program to execute. Something like:

ssh -C -X user@coderswasteland.com gnome-terminal

Sweet, huh?

This is a simple web mining script using perl.

#!/usr/bin/perl

use LWP::Simple;

$numPages=$ARGV[0];

open OUTPUT,">/home/user/out.html";
for($i=1;$i<=$numPages;$i++){
	print $i."\n";
        $content=get("http://coderswasteland.com/node/".$i);
        print OUTPUT $content;
        print OUTPUT "******************\n";
}
close OUTPUT;

This code is useful to pull information from any Drupal website. It takes the number of pages to crawl as a command line argument and uses that to increment through the site, grabbing articles. The content is then all saved to a single output file, each site separated by a series of asterisks from which you may do whatever regex or parsing is necessary to achieve your desired result.

I have a much longer version of this which does parsing and builds feeds. You may also wish to forgo writing to an output file then later reading from it and just process the information from within $content, split it into logical pieces, etc. This script is merely to get you started. If you're looking into web mining, I assume you already know about parsing and other topics, and this is just a quick way to grab web content.

A spiffier version would be to follow links on a page and popping info onto a tree rather auto-incrementing a URL. this is left as an exercise for the reader :)

For those wanting to be able to quickly and efficiently rename a bunch of files all at once, below is some example code to help you achieve that:

ls *.xml | sed 's/\(testing\)\(.*\)/mv \1\2 production\2/' | sh

The first piece ls *.xml simply lists the file types we want to change. You can, of course, alter this to anything you'd like.

The second part uses sed so search for a text and replace it with another. There are numerous regex tutorials around the net.
Within the second part, items are grouped so that I may reuse these items in the next part. Specifically, I am looking for (part1) the word "testing" and (part2) anything else. The mv command then takes as the first parameter the original two values to denote what file is to be changed and the second parameter of the command does not use the first variable but rather the word "production" and then appends whatever was in the second variable.

Part 3 simply executes this.

The end result makes a sample file named:
testing_1.xml
be
production_1.xml

Make sure you have dvdbackup and growisofs/mkisofs. (Your usual sudo apt-get install in Debian/Ubuntu).

Simply:

dvdbackup -i /dev/dvd -M -o </your/output/path>

growisofs -speed 1 -dvd-compat -Z /dev/dvdrw -dvd-video </your/output/path/videodir>

Example:

dvdbackup -i /dev/dvd -M -o /home/steven/Documents/VID/

growisofs -speed 1 -dvd-compat -Z /dev/dvdrw -dvd-video /home/steven/Documents/VID/MY_BACKUP_VIDEO/

The second path is where the first command wrote to. Basically it will be one folder deeper than that first path. It is the path that contains the VIDEO_TS directory.

Referenced from:
http://ubuntuforums.org/showthread.php?t=133642

If you've ever run into the necessity to change the same data over multiple files you know how hard it is to go through each and every file and update it by hand or at best do an indiviual regex on each. Here's how you can make the changes all in on fell swoop.

perl -pi -w -e 's/searchregex/replaceregex/g;' *.fileextension

-w display any warnings
-i in place edit
-p loop over files
-e execute this line of code

Here's an example:

perl -pi -w -e 's/\x0D//g;' *.txt

This looks for those pesky ^M characters and replaces them with nothing.