If i want to grep for a value in a file but display only unique value then which option can i use.
ex: Values in the file
IP <1.2.3.4> value <2>
IP <1.2.3.4> value <2>
IP <1.2.3.4> value <3>
IP <1.2.3.5> value <1>
i should get only the unique value (3 Replies)
Hi All,
I have a file which is having 3 columns as (string string integer)
a b 1
x y 2
p k 5
y y 4
.....
.....
Question:
I want get the unique value of column 2 in a sorted way(on column 2) and the sum of the 3rd column of the corresponding rows. e.g the above file should return the... (6 Replies)
Hello, I have a file with a list of car makes and specific information for each make. An example is:
@Audi:Warranty
@Audi:Pricing
@Audi:Colors
@Acura:Warranty
@Acura:Pricing
@Acura:Colors
and so on through a bunch of makes. I need to make a list in a selection box of just one name of... (4 Replies)
Hi everyone. I need to change a script (ksh) so that it will grep on the 1st 2 letters in the second column of a 5 column file such as this one:
192.168.1.1 CAXY0_123 10ABFL000001 # Comment
192.168.1.2 CAYZ0_123 10ABTX000002 # Comment
192.168.2.1 FLXY0_123 11ABCA000001 ... (4 Replies)
I am trying to sort, do uniq by 1st column and report this 4 columns tab delimiter table , eg
chr10:112174128 rs2255141 2E-10 Cholesterol, total
chr10:112174128 rs2255141 7E-16 LDL
chr10:17218291 rs10904908 3E-11 HDL Cholesterol
chr10:17218291 rs970548 8E-9 TG... (4 Replies)
I have file that looks like this,
DIP-17571N|refseq:NP_651151 DIP-17460N|refseq:NP_511165|uniprotkb:P45890 DIP-17571N|refseq:NP_651151
DIP-19241N|refseq:NP_524261 DIP-19241N|refseq:NP_524261 DIP-17151N|refseq:NP_524316|uniprotkb:O16797
DIP-19588N|refseq:NP_731165 ... (2 Replies)
Hello Team,
I need your help on the following:
My input file a.txt is as below:
3330690|373846|108471
3330690|373846|108471
0640829|459725|100001
0640829|459725|100001
3330690|373847|108471
Here row 1 and row 2 of column 1 are identical but corresponding column 2 value are... (4 Replies)
Hi All,
Does anyone have any suggestions/examples of how i could show only lines where the first field is not duplicated. If the first field is listed more than once it shouldnt be shown even if the other columns make it unique.
Example file :
876,RIBDA,EC2
876,RIBDH,EX7
877,RIBDF,E28... (4 Replies)
Hello,
I am trying to count unique rows in my file based on 4 columns (2-5) and to output its frequency in a sixth column. My file is tab delimited
My input file looks like this:
Colum1 Colum2 Colum3 Colum4 Coulmn5
1.1 100 100 a b
1.1 100 100 a c
1.2 200 205 a d
1.3 300 301 a y
1.3 300... (6 Replies)
Discussion started by: nans
6 Replies
LEARN ABOUT DEBIAN
poe::filter::grep
POE::Filter::Grep(3pm) User Contributed Perl Documentation POE::Filter::Grep(3pm)NAME
POE::Filter::Grep - select or remove items based on simple rules
SYNOPSIS
#!perl
use POE qw(
Wheel::FollowTail
Filter::Line Filter::Grep Filter::Stackable
);
POE::Session->create(
inline_states => {
_start => sub {
my $parse_input_as_lines = POE::Filter::Line->new();
my $select_sudo_log_lines = POE::Filter::Grep->new(
Put => sub { 1 },
Get => sub {
my $input = shift;
return $input =~ /sudo[d+]/i;
},
);
my $filter_stack = POE::Filter::Stackable->new(
Filters => [
$parse_input_as_lines, # first on get, last on put
$select_sudo_log_lines, # first on put, last on get
]
);
$_[HEAP]{tailor} = POE::Wheel::FollowTail->new(
Filename => "/var/log/system.log",
InputEvent => "got_log_line",
Filter => $filter_stack,
);
},
got_log_line => sub {
print "Log: $_[ARG0]
";
}
}
);
POE::Kernel->run();
exit;
DESCRIPTION
POE::Filter::Grep selects or removes items based on simple tests. It may be used to filter input, output, or both. This filter is named
and modeled after Perl's built-in grep() function.
POE::Filter::Grep is designed to be combined with other filters through POE::Filter::Stackable. In the "SYNOPSIS" example, a filter stack
is created to parse logs as lines and remove all entries that don't pertain to a sudo process. (Or if your glass is half full, the stack
only selects entries that DO mention sudo.)
PUBLIC FILTER METHODS
In addition to the usual POE::Filter methods, POE::Filter::Grep also supports the following.
new
new() constructs a new POE::Filter::Grep object. It must either be called with a single Code parameter, or both a Put and a Get parameter.
The values for Code, Put, and Get are code references that, when invoked, return true to select an item or false to reject it. A Code
function will be used for both input and output, while Get and Put functions allow input and output to be filtered in different ways. The
item in question will be passed as the function's sole parameter.
sub reject_bidoofs {
my $pokemon = shift;
return 1 if $pokemon ne "bidoof";
return;
}
my $gotta_catch_nearly_all = POE::Filter::Grep->new(
Code => &reject_bidoofs,
);
Enforce read-only behavior:
my $read_only = POE::Filter::Grep->new(
Get => sub { 1 },
Put => sub { 0 },
);
modify
modify() changes a POE::Filter::Grep object's behavior at run-time. It accepts the same parameters as new(), and it replaces the existing
tests with new ones.
# Don't give away our Dialgas.
$gotta_catch_nearly_all->modify(
Get => sub { 1 },
Put => sub { return shift() ne "dialga" },
);
SEE ALSO
POE::Filter for more information about filters in general.
POE::Filter::Stackable for more details on stacking filters.
BUGS
None known.
AUTHORS & COPYRIGHTS
The Grep filter was contributed by Dieter Pearcey. Documentation is provided by Rocco Caputo.
Please see the POE manpage for more information about authors and contributors.
perl v5.14.2 2012-05-15 POE::Filter::Grep(3pm)