02-05-2016
I have to admit I can't resolve the logics of your pipe. But, almost sure, I can say that all that (time consuming) piping can be reduced to/done by one single awk command.
You start listing the lines at the epoch value 1454687485, and list down to the end-of-file. Later you grep for Thu Feb 04. Why don't you operate on the lines with $3 between 1454626800 and 1454713199? That would save the first awk, the egrep, and, as the output of A is no more needed, the last awk as well.
The (boolean) Q variable is redundant as well; it is set to 1 and never reset - so what's its meaning?
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