Hi! I'm trying to find a way to extract a certain amount of lines from a log file. This would allow me to "follow" a web user through our log files.
Here is a sample fake log file to explain what i want to accomplish :
BEGIN REQUEST sessionID=123456
boatload of lines for thread-1 detailing... (8 Replies)
Hi all,
I have a data file from which i would like to extract only certain fields, which are not adjacent to each other. Following is the format of data file (data.txt) that i have, which has about 6 fields delimited by "|"
HARRIS|23|IT|PROGRAMMER|CHICAGO|EMP
JOHN|35|IT|JAVA|NY|CON... (2 Replies)
Hi All,
I need to extract 543 from the command below :
# pvscan
PV /dev/sdb1 VG vg0 lvm2
Total: 1 543.88 GB] / in use: 1 / in no VG: 0
I have the following command which does the job, but I think this could be achieved in a more simple way using sed or awk. Any help is... (7 Replies)
Hi,
I am trying to extract the first and last lines for each unique item in column 2 of a large text file and then concatenate all extracted lines together in a new text file.
So ... I want to go from this format:
NEW 0088-BPM 1.042700e+04 877168.19 9718360.00 1496.00
NEW 0088-BPM... (5 Replies)
Hello everybody,
Here is my problem : I cannot find a way to extract data from a particular file and more precisely I cannot extract the result of my awk script to an external file because I am currently working on HP-UX.
I would like a simple script (without awk) which asks for a date like... (4 Replies)
Hello
does anyone know of an awk that will extract log file entries between a specific date and time range, eg:
awk '/15\/Dec\/2010:16:10:00/, /15\/Dec\/2010:16:15:00/' access_log
but one that works?
Or a free command line log file analysis tool/script?
I'd like to be able to view... (2 Replies)
Hi,
I have a file like this-
aa
12
23
34
aa
21
34
56
aa
78
45
56
I want to print out only the lines after the last aa. How do I do this? I tried using grep -A and sed -n, but both didnt work as I wanted to.
Could someone help me out please.. (3 Replies)
Hi,
I need some help in getting extracting the specific horizontal and vertical texts in a single line. I am trying to extract few of the parameters from a config file. Your help is appreciated.
Desired Output
----------------
Pool members members ... (4 Replies)
Perl::Critic::Policy::Variables::RequireNegativeIndices(User Contributed Perl DocumentPerl::Critic::Policy::Variables::RequireNegativeIndices(3pm)NAME
Perl::Critic::Policy::Variables::RequireNegativeIndices - Negative array index should be used.
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
Conway points out that
$arr[$#arr];
$arr[$#arr-1];
$arr[@arr-1];
$arr[@arr-2];
are equivalent to
$arr[-1];
$arr[-2];
$arr[-1];
$arr[-2];
and the latter are more readable, performant and maintainable. The latter is because the programmer no longer needs to keep two variable
names matched.
This policy notices all of the simple forms of the above problem, but does not recognize any of these more complex examples:
$some->[$data_structure]->[$#{$some->[$data_structure]} -1];
my $ref = @arr;
$ref->[$#arr];
CONFIGURATION
This Policy is not configurable except for the standard options.
AUTHOR
Chris Dolan <cdolan@cpan.org>
COPYRIGHT
Copyright (c) 2006-2011 Chris Dolan.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.14.2 2012-06-07 Perl::Critic::Policy::Variables::RequireNegativeIndices(3pm)