b    05/Jul/2010:07:00:10
a    05/Jul/2010:06:00:09
b    05/Jul/2010:07:00:10
c    05/Jul/2010:07:10:16
d    05/Jul/2010:08:00:10
e    05/Jul/2010:09:00:10
f    05/Jul/2010:10:00:10
h    05/Jul/2010:11:00:10
i    05/Jul/2010:12:00:20
j    05/Jul/2010:13:00:10
k    05/Jul/2010:14:00:10
l    05/Jul/2010:15:00:30
m    05/Jul/2010:16:00:10
n    05/Jul/2010:17:00:10
o    05/Jul/2010:18:00:10
p    05/Jul/2010:19:00:40
q    05/Jul/2010:20:00:10
a    05/Jul/2010:21:00:10
b    05/Jul/2010:22:00:50
v    05/Jul/2010:23:00:20
g    06/Jul/2010:01:00:10
k    06/Jul/2010:02:00:10
i    06/Jul/2010:03:00:14
j    06/Jul/2010:04:00:10
k    06/Jul/2010:05:00:18
l    06/Jul/2010:06:00:10
m    06/Jul/2010:07:00:10
n    06/Jul/2010:08:00:19
n    06/Jul/2010:09:00:10

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Input file is 19739530 lines. How to extract the date that is of 3 days old dated from 05/Jul/2010:06 to next day 06/Jul/2010:09 from the input file to another file. Please help me. How to make the execution faster.

In reply to Extract the lines from file by Anonymous Monk

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