From: Lovell Mcilwain <lovell.mcilwain@...>
Date: 2006-11-10T07:02:06+09:00
Subject: [Ruby Newbie] Reading in a file generated by df

Hello all, (yes its me again :-) )

I'm here at work and was hit with a very interesting problem. My boss 
would like for me to build a script that monitors disk usage on our 
database systems (OS X).

I figured what better way to learn ruby then go right into a live 
situation. Granted, I'm not sure I'm ready for it but hell I will give 
it a shot anyway.

So I don't have a specific way to implement this so I figure I try 
something that I believe to be basic.

1. Generate a file (df -k > filename.txt)
2. Read the file using Ruby code
A. compare bites or percentage size (which ever is easier) with a set 
size that I determine. If the size read in exceeds the size that I have 
determined then it shoots a warning to me via e mail letting me know I 
need to deal with it.

So, now that I have my idea out of my head an on paper, I started 
writing my code.

require 'yaml' # Just in case I need it
doc_array = [] # Array to have each line read from the file put into a 
list

file = File.new('diskcheck.txt','r') # Read the file
while(line = file.gets) # Condition to put the files into the array
doc_array[doc_array.length] = line
end

puts doc_array # Test to see if file was read into array correctly

So on to my problem (thanks for reading this far),
When I try to get an ouput of the array that is supposed to have the 
several lines of the file read, it actually doesn't come up with 
anything.

I run my program and it just exits without any errors but there is also 
no output that comes to the screen... Do I need to convert this file or 
find a better way to read in this file?

When I read in this file, It doesn't spit out anything

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