added coreutils + bash solution for problem 1

1/euler001.bash

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+declare -i sum=0
+
+for i in {1..999}; do
+    { 
+        echo $i | grep -E "*[05]$" || factor $i | grep -P "\d+:(\s\d)*(\s[35])(\s\d*)*$"; 
+    } > /dev/null && sum=$(( $sum + $i ))
+done
+
+echo "$sum"