I am trying to find out how to search a file and find certain key words 
then print them.

Example:

#!/usr/bin/ruby

system("cat /proc/partitions > drives.txt")


Output:
   8     0    1007616 sda
   8     1    1007600 sda1
   3     0   33027622 hda
   3     1   14651248 hda1
   3     2   14651280 hda2
   3     3    3719047 hda3

Now i would just want to print the word hda to the screen.

Any help would be nice.
Thanks

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