Shell Programming and Scripting

Hi,

I would like to seek for methods to do selective extraction of line froma file. The scenario as follows:

I have a file with content:

[RECV]
message a
received on 11:10:00
file size: 10 bytes
send by abc
[End]

[RECV]
message b
received on 11:20:00
file size: 10 bytes
send by abc
[End]

[RECV]
message c
received on 11:30:00
file size: 10 bytes
send by abc
message d
received on 11:40:00
file size: 10 bytes
send by abc
[End]

I will like to extract the last [RECV] portion from the file i.e message c and d. The [RECV] and [End] is fixed but the number of message in each portion is not fixed.

Thank for the advice.

Cheer

GNU awk

Code:

#awk 'BEGIN{RS=""}END{print }' file

try to produce some code next time before you ask questions.

Code:

local $/="[End]\n\n";
my $tmp;
while(<DATA>){
	$tmp=$_;
}
print $tmp;
__DATA__
[RECV]
message a
received on 11:10:00
file size: 10 bytes
send by abc
[End]

[RECV]
message b
received on 11:20:00
file size: 10 bytes
send by abc
[End]

[RECV]
message c
received on 11:30:00
file size: 10 bytes
send by abc
message d
received on 11:40:00
file size: 10 bytes
send by abc
[End]

Code:

grep -p 'message c' file