Shell Programming and Scripting

Hi Guys !

is it possible to extract lines from a file which satisfy a time contraint

for example program should consider two boundaries one current time and second the user define time and then extract all those line which fall into that specified time

lets say 10 (user define time) and 12 (system time)

now the program return all the line from logfile which has a time stamp between 12 and 10 hours

suppose data is like this

abc bachd 14/07/2010:11:15:30
cde babde 15/01/2011:05:30:01
bad riewie 30/12/2010:04:18:00

out file should have only first line because it is the only line that satisfy the hours constraint


Best Regards,

TJ

Code:

$ grep "/....:1[0-2]:" infile
abc bachd 14/07/2010:11:15:30
$

Wont that also grep 10 or 12 minutes?

egrep ":1[0-2]:..:.." infile

Hi Jayan_jay !

it is working fine but can you explain how it is working so that i change it according to my requirements? and one more thing it is considering 12 hours also i want only 10th hour, 11th hour up to 11:59, how can it be generalized i mean the user input should be given at run time....



Thanks in advance

Regards,

TJ

refer the link (section 4.2.2.2) .. hope that will clears ..
Examples using grep
Below the code for the current req.

Code:

$ grep "/....:1[0-1]:" infile
abc bachd 14/07/2010:11:15:30
abc bachd 14/07/2010:11:59:30
$

Hi Jay!

thanks for your help and time

Best Regards,

TJ