Grep specific records from a file of records that are separated by an empty line
Hi everyone.
I am a newbie to Linux stuff. I have this kind of problem which couldn't solve alone. I have a text file with records separated by empty lines like this:
I want to grep records that have both 'Email' and 'Age' like in the last one and put that record in another file. How to do that?
Thanks in advance
Atrisa
Last edited by radoulov; 12-13-2010 at 10:33 AM..
Reason: Added code tags.
I have a file which is 5 million records. And each records has 412 fields has delimited by "|". So that makes each records to be 2923 bytes long. I wanted to extract specific records like top 100 or 2500 - 5000, 50001 - 10000 etc. from this file.
I tried using head command for top 100 records,... (1 Reply)
I am trying to cut the first 10 characters from a file only if the file has 'xyz' in field 185-188.
I tried this
cat filename | cut -c1-10
but this gives me all the records regardless of what is in field 185-188.
Is this doable ?
Thanks in advance for responses. (2 Replies)
I have a flat file and need to count no of records in the file less the header and the trailer record.
I would appreciate any and all asistance
Thanks
Hadi Lalani (2 Replies)
Hi,
I am looking for a method to get column13 to column 50 data from the 1st line of a multiline reord. The records are stored in a large file and are separated by newline. sample format is
(data in red is to be extracted)
<header>
A001dfhskhfkdsh hajfhksdhfjh... (3 Replies)
Hi,
I have a file where there "Tab" seperated values are present.I need to identify duplicate entries based on column 1 & 6 only .
For e.g :
I tried using uniq ..but the output is only having one duplicate entry, instead of both the entries.I need both the above entries .
uniq -f5... (2 Replies)
I have 2 files
"File 1" is delimited by ";" and "File 2" is delimited by "|".
File 1 below (3 record shown):
Doc1;03/01/2012;New York;6 Main Street;Mr. Smith 1;Mr. Jones
Doc2;03/01/2012;Syracuse;876 Broadway;John Davis;Barbara Lull
Doc3;03/01/2012;Buffalo;779 Old Windy Road;Charles... (2 Replies)
Hello:
Is there a simple way to remove empty records of FASTA format file?
A FASTA format consists of two parts: header and sequence (for non-biologist, Wiki for details of course!). The header always start with ">" for the name of the sequence. The header must be in this ONLY single line.... (9 Replies)
Suppose i have the following data :
cat file.txt
12431,123334,55353,546646,14342234,4646,35234
123123,3535,123434,132535,1234134,13535,123534
123213,545465,23434,45646,2342345,4656,31243
2355425,2134324,53425,342,35235,23434,234535
3423424,234234,65465,,2344,35436,234524,234... (7 Replies)
Hi I am new to shell programming in unix
Please if I can provide help.
I have a file structure of a header record and "N" detail records.
The header record will be the total number of detail records
I need to split the file in 2:
One for the header
Another for all detail records
Could... (1 Reply)
Discussion started by: jamcogar
1 Replies
LEARN ABOUT DEBIAN
email::date
Email::Date(3pm) User Contributed Perl Documentation Email::Date(3pm)NAME
Email::Date - Find and Format Date Headers
SYNOPSIS
use Email::Date;
my $email = join '', <>;
my $date = find_date($email);
print $date->ymd;
my $header = format_date($date->epoch);
Email::Simple->create(
header => [
Date => $header,
],
body => '...',
);
DESCRIPTION
RFC 2822 defines the "Date:" header. It declares the header a required part of an email message. The syntax for date headers is clearly
laid out. Stil, even a perfectly planned world has storms. The truth is, many programs get it wrong. Very wrong. Or, they don't include a
"Date:" header at all. This often forces you to look elsewhere for the date, and hoping to find something.
For this reason, the tedious process of looking for a valid date has been encapsulated in this software. Further, the process of creating
RFC compliant date strings is also found in this software.
FUNCTIONS
find_date
my $time_piece = find_date $email;
"find_date" accepts an email message in any format Email::Abstract can understand. It looks through the email message and finds a date,
converting it to a Time::Piece object.
If it can't find a date, it returns false.
"find_date" is exported by default.
format_date
my $date = format_date; # now
my $date = format_date( time - 60*60 ); # one hour ago
"format_date" accepts an epoch value, such as the one returned by "time". It returns a string representing the date and time of the
input, as specified in RFC 2822. If no input value is provided, the current value of "time" is used.
"format_date" is exported by default.
format_gmdate
my $date = format_gmdate;
"format_gmdate" is identical to "format_date", but it will return a string indicating the time in Greenwich Mean Time, rather than
local time.
"format_gmdate" is exported on demand, but not by default.
PERL EMAIL PROJECT
This module is maintained by the Perl Email Project
<http://emailproject.perl.org/wiki/Email::Date>
SEE ALSO
Email::Abstract, Time::Piece, Date::Parse, perl.
AUTHOR
Casey West, <casey@geeknest.com>.
Ricardo SIGNES, <rjbs@cpan.org>.
COPYRIGHT
Copyright (c) 2004 Casey West. All rights reserved.
This module is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
perl v5.10.1 2007-12-01 Email::Date(3pm)