Added script to pull historical stock data and resulting data files (1 per company). Added code to generate average price change per 1, 2 and 3-gram. Added code to output average price change per headline for VALIDATION dataset.

data/getStockHistory

@@ -0,0 +1,68 @@
+#!/bin/bash
+
+# NAME
+#	getStockHistory -- Downloads historic stock prices for a given company stock.
+#
+# SYNOPSIS
+#	getStockHistory symbol [optional saveLocation]
+#	getStockHistory -f file [optional saveLocation]
+#
+# DESCRIPTION
+#	The getSockHistory command attempts to download complete stock history for a given company or
+#	for list of companies in a file.
+#
+# OPTIONS
+#	-f	Use a file to have a list of stock symbols to download. Each stock symbol should be on a
+#		differnt line in the file.
+#	
+#
+# EXAMPLES
+#	The following downloads Apple's stock history.
+#		getStockHistory AAPL
+#
+# BUGS
+#
+# Written by: Rowland O'Flaherty (rowland.oflaherty@gmail.com)
+# Created on: 02/08/10/
+
+function getHistory() {
+	stockSymbol=$1
+	if [[ -z $stockSymbol ]]
+	then
+		echo "Invalid stock symbol"
+		exit 1
+	fi
+	stockSymbol=$(echo $stockSymbol | tr '[:lower:]' '[:upper:]')
+	saveLocation=$2
+	wget -q -O ${stockSymbol}.csv "http://ichart.finance.yahoo.com/table.csv?s=${stockSymbol}&ignore=.csv"
+	sed '1s/\ /_/g' ${stockSymbol}.csv > ${stockSymbol}.tmp
+	mv ${stockSymbol}.tmp ${stockSymbol}.csv
+	mv ${stockSymbol}.csv ${saveLocation}
+}
+
+fOpition=false
+while getopts :f OPTION
+do
+	case $OPTION in
+		f)
+			fOpition=true
+		;;
+		'?')
+			echo "Invalid option $OPTARG"
+		;;
+	esac
+done
+if [[ "$fOpition" = "true" ]]
+then
+	fileLocation=$2
+	saveLocation=$3
+	saveLocation=${saveLocation:=$HOME/Downloads}
+	for aSym in $(cat $fileLocation)
+	do
+		eval "getHistory $aSym $saveLocation"
+	done
+else
+	saveLocation=$2
+	saveLocation=${saveLocation:=$HOME/Downloads}
+	eval "getHistory $1 $saveLocation"
+fi