Hi,
I have a simple question... In C do we have a standard library function which will return the pointer to a substring at certain offset and having certain length...
Ofcourse we should take care not to access beyond allocated length in the parent string and don't overwrite beyond allocated... (2 Replies)
Hello all,
I am trying to add chunks to my informix dataspace. I have one dataspace ( the rootdbs ) and the new chunk is a raw device. Precisely slice1 on my new external harddisk.
The question is, what should be the offset value. The document says, the offset is used by the engine to... (1 Reply)
Hi,
I want to read a file from a specified offset from the start of file. With the read command, is it possible to do so. Please suggest. Is there any other alternative?
Thanks,
Saurabh (2 Replies)
Function: int fcntl(int fd, int cmd, struct flock * lock)
Data Type: struct flock
This structure is used with the fcntl function to describe a file lock. It has these members:
off_t l_start
This specifies the offset of the start of the region to which the lock applies, and... (1 Reply)
I have read the below from the book bash cookbook.Tail +1 filenames is similar to cat filename
I have tried the same in Ubuntu 11.10 with bash. 4.0 .
I have received error for the Same.
May I know in which system that will work fine ?
Thanks (1 Reply)
Hi ,
I have a .gz file whose contents look like below.
data1^filename1
data2^filename2.
..
.
.
Is it possible to find out the byte offset of each record from the .gz file.
Like in an uncompressed file.
grep -nb "Filename" give the byte offset of the record in this case.
... (4 Replies)
How can I get GMT offset from EST for a particular date(not current date) in unix. For example, user enters date as: 2012-06-25D11:49:37, this is GMT. I have to calculate GMT offset from EST in unix for this input. Thanks in advance.
-Steve (1 Reply)
Dear all,
I want to offset the file numbers. can you please make some awk code or linux code for the same.
Example:
input file names
ANI_WFMASS_PIST00001.gif
ANI_WFMASS_PIST00002.gif
.
.
.
ANI_WFMASS_PIST0000n.gif
offset --> 30
ANI_WFMASS_PIST00031.gif
ANI_WFMASS_PIST00032.gif... (14 Replies)
Discussion started by: kri321shna
14 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)