Hello,
I was parsing a log file some days ago, and it had about 1,600,000 lines. All lines in that log file were supposed to have a fix length of say, 140 characters. Because of some noises on RS232 cable, some lines had fewer or much characters than 140.
I was thinking of a program that let me knew how many lines have more/less characters than specified (here 140). I wrote a simple program for my purpose but I thought it is better to integrate this feature in a well-know frequently used tool like 'wc'.