hi,
How can I check for a field in a pipe-delimited file having a NULL value in Unix using a grep command or any other command.
Please reply (5 Replies)
Hello,
Below is my input file's content ( in HP-UX platform ):
ABCD120672-B21 1
ABCD142257-002 1
ABCD142257-003 1
ABCD142257-006 1
From the above, I just want to get the field of 13 characters that comes after 'ABCD' i.e '120672-B21'... . Could... (2 Replies)
the file has several date fields.for example, #2, #3,and #5 are date fields.
I want grep year '2002' just within #2 field and get all the rows which content year '2002' in the #2 field. is it possible to do this? how to do it? Thanks (2 Replies)
Dear All,
I have the following input file. I want to replace data with null values.
I/P File:
9022334455|2008-12-06 06:10:21|2|Error@@@|esoo8erp|
9024334432|2008-12-06 08:40:59|6|Error@@@|6y2o8e6r|
O/P File:
9022334455||2||esoo8erp|
9024334432||6||6y2o8e6r|
... (4 Replies)
Hi,
I know there are lots of threads on replacing text within files, usually using sed or awk. However, I find it hard to adapt examples that I found to my specific case. I am kind of new to UNIX and have hard times learning the syntax either for sed or awk so I would appreciate any help. Here's... (5 Replies)
hi,
I would like to search for a specific string at a specific line in a file and would like to know the count of it.
eg: samp.txt
ABC 1234 BELL
HNZ 4567 RING
NNN 5673 BELL
Please help with the command to find the count of BELL in the above file samp.txt at the specific line 10 with... (7 Replies)
Hi,
I've a pipe delimited file and wanted to replace the 3rd field to 099990 where the values are null. How can I achieve it using awk or sed.
20130516|00000061|02210|111554|03710|2|205069|SM APPL $80-100 RTL|S
20130516|00000061|02210|111554|03710|2|205069|SM APPL $80-100 RTL|S... (12 Replies)
This could be a really dummy question.
I have a log text file.
What unix command to extract line from specific string to another specific string.
Is it something similar to?:
more +/"string" file_name
Thanks (4 Replies)
Hi Folks,
We have a file that has null values but there are no delimiters. So all columns are considered as a single column.
Ex:
abc def 123
abcdef1234567
hijklmn7896545
Now from "a" till "3" all are considered as a single column from the first row.
Our requirement is like, we... (2 Replies)
I am trying to add a tab after the last digit in $3 in the input. The grep below is all I can think off. Thank you :)
sed -n 's/:/&/p' input
input
chr1 955542 955763AGRN-6|gc=75
chr1 957570 957852AGRN-7|gc=61.2
chr1 976034 976270AGRN-9|gc=74.5
desired output
chr1... (5 Replies)
Discussion started by: cmccabe
5 Replies
LEARN ABOUT SUSE
mail::mbox::messageparser::grep
Mail::Mbox::MessageParser::Grep(3) User Contributed Perl Documentation Mail::Mbox::MessageParser::Grep(3)NAME
Mail::Mbox::MessageParser::Grep - A GNU grep-based mbox folder reader
SYNOPSIS
#!/usr/bin/perl
use Mail::Mbox::MessageParser;
my $filename = 'mail/saved-mail';
my $filehandle = new FileHandle($filename);
my $folder_reader =
new Mail::Mbox::MessageParser( {
'file_name' => $filename,
'file_handle' => $filehandle,
'enable_grep' => 1,
} );
die $folder_reader unless ref $folder_reader;
# Any newlines or such before the start of the first email
my $prologue = $folder_reader->prologue;
print $prologue;
# This is the main loop. It's executed once for each email
while(!$folder_reader->end_of_file());
{
my $email = $folder_reader->read_next_email();
print $email;
}
DESCRIPTION
This module implements a GNU grep-based mbox folder reader. It can only be used when GNU grep is installed on the system. Users must not
instantiate this class directly--use Mail::Mbox::MessageParser instead. The base MessageParser module will automatically manage the use of
grep and non-grep implementations.
METHODS AND FUNCTIONS
The following methods and functions are specific to the Mail::Mbox::MessageParser::Grep package. For additional inherited ones, see the
Mail::Mbox::MessageParser documentation.
$ref = new( { 'file_name' => <mailbox file name>, 'file_handle' => <mailbox file handle> });
<file_name> - The full filename of the mailbox
<file_handle> - An opened file handle for the mailbox
The constructor for the class takes two parameters. The file_name parameter is the filename of the mailbox. The file_handle argument is
the opened file handle to the mailbox.
Returns a reference to a Mail::Mbox::MessageParser object, or a string describing the error.
BUGS
No known bugs.
Contact david@coppit.org for bug reports and suggestions.
AUTHOR
David Coppit <david@coppit.org>.
LICENSE
This software is distributed under the terms of the GPL. See the file "LICENSE" for more information.
HISTORY
This code was originally part of the grepmail distribution. See http://grepmail.sf.net/ for previous versions of grepmail which included
early versions of this code.
SEE ALSO
Mail::Mbox::MessageParser
perl v5.12.1 2009-08-09 Mail::Mbox::MessageParser::Grep(3)