10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
dear users and experts,
i am stuck withis command and i am unable to understand what is it doing??
ls -d * (7 Replies)
Discussion started by: seshank
7 Replies
2. Shell Programming and Scripting
Hi,
What is the difference in capitalizing the option 'i' of xargs command, (i.e) xargs -i and xargs -I?
Also, what is the difference between the below 2 commands?
output_from_cmd | xargs -I {} grep '{}' file
output_from_cmd | xargs -I grep '{}' file
Any efficiency or performance... (4 Replies)
Discussion started by: royalibrahim
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3. Shell Programming and Scripting
Hi
I need to grep a particular world like and redirect into a temporary file .But while iam grepping some unwanted data are aslo coming like .ex In a FILE all these TABLENAMES are present .
module_table1,module_table2, module_table3,module_table5, module_table1_temp , module_table2_temp... (9 Replies)
Discussion started by: mani_isha
9 Replies
4. Shell Programming and Scripting
Hello,
I want to search for a file/directory named "abc" which is located anywhere in the given unix system.
I am using the command :-
But the problem is that this is giving me all combinations of files with have 'abc' in their name. But can I know the option to be used to get the location... (5 Replies)
Discussion started by: nsharath
5 Replies
5. Shell Programming and Scripting
shudnt this command :
grep test
give all the lines which do not hv 'C'. ^ wrks as negating character inside square brackets right ???
bt in my case grep is printin all the line in the file
also wht does
grep c+ test & grep c? test
shud do ??? (4 Replies)
Discussion started by: evergreen_cool
4 Replies
6. Shell Programming and Scripting
Hello
i am new shell scripting.
I have a file like this,
$ cat myfile
;/abc/abc.cpp@@/main/1;xyz
;/abc/abc.cpp@@/main/2;usr2
;/abc/abc.cpp@@/main/1;abc
;/abc/abc.cpp@@/main/2;usr2
;/abc/abc.cpp@@/main/1;usr1
when i grep the file.
$ grep "abc" myfile... (8 Replies)
Discussion started by: tsaravanan
8 Replies
7. UNIX for Dummies Questions & Answers
Hi,
I am trying to understand a script and found a line as follows:
tr '\211\233\240' '\040' < $IN_FILE | tr -cd '\11\12\15\40-\176' > $TEMP_FILE
Can any one explain the above line .. What are they trying to translate using the tr command.. I have not used tr command.. so feeling little bit... (2 Replies)
Discussion started by: risshanth
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8. UNIX for Advanced & Expert Users
PLEASE EXPLANIN ME...
sed 's~\(.*\)\(<name>\)\(.*\)\(</name>\)\(.*\)~\2\3\4~'
this is the format
<start><name>123<\name><addr>BAC<\addr><loc>sfo<\loc></start> (1 Reply)
Discussion started by: gksenthilkumar
1 Replies
9. AIX
I am new to unix...
How to get all the saturdays of a specific year?
for a specific month, i tried as below..
cal 02 2006 | awk '{print $7}'
but it is not giving all saturdays....
can anyone help me with this?
Thanks in advance,
Sumi (9 Replies)
Discussion started by: sumi
9 Replies
10. UNIX for Dummies Questions & Answers
Hi,
I have one txt file as bellow:
Inspector logging xxxxx xxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxx Inspector logging xxxxxxxxxxxxxx
xxxxxxxxx xxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxx Inspector loggingxxxxxxxxxxxxxxx
Inspector logging xxxxx xxxxxxxxxxxxxxxxxxxxxxxx
I want... (1 Reply)
Discussion started by: redlotus72
1 Replies
Mail::Mbox::MessageParser::Grep(3pm) User Contributed Perl Documentation Mail::Mbox::MessageParser::Grep(3pm)
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 v5.10.1 2009-08-09 Mail::Mbox::MessageParser::Grep(3pm)