Shell Programming and Scripting

Hi,

Need to grep for a error in a log file but between two timestamps / patterns

example: in the below log file if the given timestamps are 14:00 to 15:00
and m greping for error only error3 should come in the output.

pls note that apart from timestamps printed, the log file has no specific pattern.

error1
7/16/2012 13:00:00
error2
7/16/2012 14:00:00
error3
7/16/2012 15:00:00
error4
7/16/2012 16:00:00
error5

given timestamps:
from 7/16/2012 14:00:00
to 7/16/2012 15:00:00

output:
error3

also user can only give from time OR to time .... in that case the script should work with one input only ....
example: get errors after 2 PM ... before 5 PM...etc

i know find / grep /awk but not sure how to combine these and get the required output

do i need to learn sed / cut / perl ??

Hi

Code:

$ sed -n "/$t1/,/$t2/{/$t1\|$t2/d;p;}" file
error3

Guru.

thanks for the reply but i didnt got one point .. where u grepped for the error ?

there could be many more things between the two time stamps which need to be ignored and only required errors need to be grepped