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06-26-2009
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Selective extraction of data from a files
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 |
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06-26-2009
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GNU awk Code:
#awk 'BEGIN{RS=""}END{print }' file
try to produce some code next time before you ask questions. |
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06-26-2009
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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]
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