PROBLEM: No real problem. A second tier introduction to awk


	#print the number of bytes allocated to each file
$ ls -l 
-rw-r--r--  1 srk  staff    745 Nov 12 13:30 1980AJ.....85.1413K
-rw-r--r--  1 srk  staff   1945 Nov 12 13:21 1981ApJ...247L..73H
-rw-r--r--  1 srk  staff    531 Nov 12 13:31 1982A%26A...112..120P
-rw-r--r--  1 srk  staff   5585 Nov 12 13:13 1982ApJ...259L..63K
-rw-r--r--  1 srk  staff  22145 Nov 12 13:09 1982Natur.300..615B
-rw-r--r--  1 srk  staff   1105 Nov 12 13:27 1983ApJ...273L..75H
-rw-r--r--  1 srk  staff   3105 Nov 12 13:17 1983ApJS...53..591D
-rw-r--r--  1 srk  staff   2025 Nov 12 13:21 1983Natur.301..314B
-rw-r--r--  1 srk  staff   1505 Nov 12 13:23 1983Sci...220.1233B

$ ls -l  | awk '{print $5}' 

	#Compute net allocation
$ ls -l | awk '{sum=+$5} END{print sum}'

	#Determine largest file
$ ls -l | akw '{if ($5>max) max=$5} END{print max}'  # pedestrian
$ ls -l | awk '$5>max{max=$5} END{print max}'  # elegant