How do I grep/check the on-hand value on the second line of show_prod script below? In this case it's a "3".
So if it's > 0, then run_this, otherwise, quit.
> ./show_prod
Product Status Onhand Price
shoe OK 3 1.1 (6 Replies)
I'm looking for SED equivalent for grep -w -f. All I want is to search a list of patterns from a file. Also If the pattern doesn't match I do not want "null returned", rather I would prefer some text as place holder say "BLANK LINE" as I intend to process the output file based on line number.
... (1 Reply)
Hi,
I need an awk script (or whatever shell-construct) that would take data like below and get the max value of 3 column, when grouping by the 1st column.
clientname,day-of-month,max-users
-----------------------------------
client1,20120610,5
client2,20120610,2
client3,20120610,7... (3 Replies)
$ cat file.log
Message Number = : Sending message 10:50:16^|^reqhdr.dummyid^=^02^|^reqhdr.timezone^=^GMT+05:30^|^DUMMYREQUEST^=^BH||||||||||||||||||$BD|OL|C|V||DummyAcctNo|02||24/12/2011|ST_DDM|DDM||||||||reqUUID110612105016$BT||||||||||||||||||$] Length
I have the above line in the... (4 Replies)
Hi, I have a file with +/- 13000 lines and 4 column. I need to search the 3rd column for a word that begins with "SAP-" and move/skip it to the next column (4th). Because the 3rd column need to stay empty.
Thanks in advance.:)
89653 36891 OTR-60 SAP-2
89653 36892 OTR-10 SAP-2... (2 Replies)
Hi ,
I have a file where i have modifed certain things compared to original file . The difference of the original file and modified file is as follows.
# diff mir_lex.c.modified mir_lex.c.orig
3209c3209
< if(yy_current_buffer -> yy_is_our_buffer == 0) {
---
>... (5 Replies)
input
"A","B","C,D","E","F"
"S","T","U,V","W","X"
"AA","BB","CC,DD","EEEE","FFF"
required output:
"A","B","C,D","C,D","F"
"S", T","U,V","U,V","X"
"AA","BB","CC,DD","CC,DD","FFF"
tried using awk but double quotes not preserving for every field. any help to solve this is much... (5 Replies)
Hi all,
I have searched and searched, but I have not found a solution that quite fits what I am trying to do.
I have a long list of data in three columns. Below is a sample:
1,10,8
2,12,10
3,13,12
4,14,14
5,15,16
6,16,18
Please use code tags
What I need to do is as follows: If a... (4 Replies)
Discussion started by: bleedingturnip
4 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)