Sponsored Content
Top Forums Shell Programming and Scripting Capture first N Bytes from first line in a file Post 302349122 by panyam on Monday 31st of August 2009 07:08:00 AM
Old 08-31-2009
Tytalus,

can you please let me know how the below one is working ?

Code:
#  dd if=infile ibs=48 count=1 of=outfile


Last edited by panyam; 08-31-2009 at 08:22 AM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Remove first N bytes and last N bytes from a binary file on AIX.

Hi all, Does anybody know or guide me on how to remove the first N bytes and the last N bytes from a binary file? Is there any AWK or SED or any command that I can use to achieve this? Your help is greatly appreciated!! Best Regards, Naveen. (1 Reply)
Discussion started by: naveendronavall
1 Replies

2. Shell Programming and Scripting

80 bytes per line ???

I am creating ASCII file from Oracle procedure into Unix box. I undertstand there is NO CRLF as I am writing it into one complete string .. but need to know what is best way to format the file with 80bytes per line only before handing over to another program. Thanks in advance regards... (14 Replies)
Discussion started by: u263066
14 Replies

3. Shell Programming and Scripting

Error PHP Fatal error: Allowed memory size of 67108864 bytes exhausted(tried to allocate 401 bytes)

While running script I am getting an error like Few lines in data are not being processed. After googling it I came to know that adding such line would give some memory to it ini_set("memory_limit","64M"); my input file size is 1 GB. Is that memory limit is based on RAM we have on... (1 Reply)
Discussion started by: elamurugu
1 Replies

4. Programming

Copying 1024 bytes data in 3-bytes chunk

Hi, If I want to copy a 1024 byte data stream in to the target location in 3-bytes chunk, I guess I can use the following script. dd bs=1024 count=3 if=/src of=/dest But, I would like to know, how to do it via a C program. I have tried this with memcpy(), that did not help. (3 Replies)
Discussion started by: royalibrahim
3 Replies

5. Shell Programming and Scripting

AWK Script to Capture Each Line of File As Variable

Hi All, I'm working on creating a parts database. I currently have access to a manufacturer database in HTML and am working on moving all of the data into a MySQL db. I have created a sed script that strips out the HTML and unnecessary info and separates the script into one line for each field.... (3 Replies)
Discussion started by: dkr
3 Replies

6. Shell Programming and Scripting

awk: Input line Cannot be longer than 3,000 bytes.

Guys, I want to get the high CPU utilization from top. I am using below code : top -d2 >> /home/dba_monitoring/host_top_output.txt echo "Script started `date`" > $runlog usage=`grep "^ *$1" /home/dba_monitoring/host_top_output.txt | awk '{print $12}' | sed 's/%//'` And getting below... (7 Replies)
Discussion started by: wahab
7 Replies

7. UNIX for Dummies Questions & Answers

X bytes of 0, Y bytes of random data, Z bytes of 5, T bytes of 1. ??

Hello guys. I really hope someone will help me with this one.. So, I have to write this script who: - creates a file home/student/vmdisk of 10 mb - formats that file to ext3 - mounts that partition to /mnt/partition - creates a file /mnt/partition/data. In this file, there will... (1 Reply)
Discussion started by: razolo13
1 Replies

8. Shell Programming and Scripting

Shell script - entered input(1-40 bytes) needs to be converted exactly 40 bytes

hello, suppose, entered input is of 1-40 bytes, i need it to be converted to 40 bytes exactly. example: if i have entered my name anywhere between 1-40 i want it to be stored with 40 bytes exactly. enter your name: donald duck (this is of 11 bytes) expected is as below - display 11... (3 Replies)
Discussion started by: shravan.300
3 Replies

9. Shell Programming and Scripting

Get file's first x bytes

is there a better way to do this: head -c 10000k /var/dump.log | head -c 6000k unfortunately, the "-c" option is not available on sun solaris. so i'm looking at "dd". but i dont know how to use it to achieve the same exact goal as the above head command. this needs to work on both solaris... (5 Replies)
Discussion started by: SkySmart
5 Replies

10. Shell Programming and Scripting

How to capture string below a line?

Hi, I need to collect IP address of all servers (more than 300). One way is put it in for loop and run nslookup for that servers list, but there are multiple fields in output. (tty/dev/pts/13): bash: 1011 > nslookup vplssor04 Server: 10.58.115.34 Address: 10.58.115.34#53 Name: ... (7 Replies)
Discussion started by: solaris_1977
7 Replies
PPIx::Regexp::Structure::Capture(3pm)			User Contributed Perl Documentation		     PPIx::Regexp::Structure::Capture(3pm)

NAME
PPIx::Regexp::Structure::Capture - Represent capture parentheses. SYNOPSIS
use PPIx::Regexp::Dumper; PPIx::Regexp::Dumper->new( 'qr{(foo)}smx' ) ->print(); INHERITANCE
"PPIx::Regexp::Structure::Capture" is a PPIx::Regexp::Structure. "PPIx::Regexp::Structure::Capture" is the parent of PPIx::Regexp::Structure::NamedCapture. DESCRIPTION
This class represents capture parentheses. METHODS
This class provides the following public methods. Methods not documented here are private, and unsupported in the sense that the author reserves the right to change or remove them without notice. name my $name = $element->name(); This method returns the name of the capture buffer. Unless the buffer is actually named, this will be "undef". number my $number = $element->number() This method returns the number of the capture buffer. Note that named buffers have numbers also. SUPPORT
Support is by the author. Please file bug reports at <http://rt.cpan.org>, or in electronic mail to the author. AUTHOR
Thomas R. Wyant, III wyant at cpan dot org COPYRIGHT AND LICENSE
Copyright (C) 2009-2012 by Thomas R. Wyant, III This program is free software; you can redistribute it and/or modify it under the same terms as Perl 5.10.0. For more details, see the full text of the licenses in the directory LICENSES. This program is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose. perl v5.14.2 2012-06-06 PPIx::Regexp::Structure::Capture(3pm)
All times are GMT -4. The time now is 06:42 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy