Sponsored Content
Full Discussion: How to edit a large file
Top Forums Shell Programming and Scripting How to edit a large file Post 302581951 by vbe on Wednesday 14th of December 2011 01:09:31 PM
Old 12-14-2011
In that case use head command ...
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

how to edit large files using vi

How to edit large file using vi where you can't increase /usr/var/tmp anymore? (3 Replies)
Discussion started by: nazri
3 Replies

2. Shell Programming and Scripting

Help to edit a large file

I am trying to edit a file that has 33k+ records. In this file I need to edit each record that has a 'Y' in the 107th position and change the 10 fields before the 'Y' to blanks. Not all records have a 'Y' in the 107th field. ex: ... (8 Replies)
Discussion started by: jxh461
8 Replies

3. UNIX for Dummies Questions & Answers

Edit the File

Hello Everyone I am new to this forum. I am having a requirement to edit the file(the file is having some sql code). And this file is in my colleagues login. This is readonly Now I would like to edit this file. In which way can I do this? (1 Reply)
Discussion started by: pradkumar
1 Replies

4. Shell Programming and Scripting

how to edit large file in unix

hi All, Plz let me know how to edit a file with 2000000 records. each record contains with 40 field seperated by |. i want modify 455487 record, but i am uable to edit this large file using vi editor in unix. plz let me know how to modify this file. Thanks in advance. -Bali Reddy (3 Replies)
Discussion started by: balireddy_77
3 Replies

5. Shell Programming and Scripting

Edit a large file in place

:confused:Folks, I have a file with 50 million records having 2 columns. I have to do the below: 1. Generate some random numbers of a fixed length. 2. Replace the second column of randomly chosen rows with the random numbers. I tried using a little bit of perl to generate random numbers... (6 Replies)
Discussion started by: mvijayv
6 Replies

6. Shell Programming and Scripting

Edit value in File

I have a file oratab with entry like this SCADAG:/esitst1/oracle/product/9.2.0.8:Y I am trying to discover a way to change the 9.2.0.8 part of this to something like 10.2.0.4 as part of an upgrade script. I have tried cat /etc/oratab >>/tmp/oratab... (1 Reply)
Discussion started by: sewood
1 Replies

7. Shell Programming and Scripting

Scripting the process to edit a large file

Hi, I need to make a script to edit a file. File is a large file in below format Version: 2008120101 ;$INCLUDE ./abc/xyz/Delhi ;$INCLUDE ./abc/xyz/London $INCLUDE ./abc/xyz/New York First line in the file is version number which is in year,month,date and serial number format. Each... (5 Replies)
Discussion started by: makkar4u
5 Replies

8. Shell Programming and Scripting

Script to Edit the file content and create new file

I have a requirement, which is as follows *. Folder contains list of xmls. Script has to create new xml files by copying the existing one and renaming it by appending "_pre.xml" at the end. *. Each file has multiple <Name>fileName</Name> entry. The script has to find the first occurance of... (1 Reply)
Discussion started by: sudesh.ach
1 Replies

9. Shell Programming and Scripting

edit file

I have a file containing dates like below 2010 1 02 2010 2 01 2010 3 05 i want the dates to be like below 20100102 20100201 20100305 i tired using awk '{printf "%s%02s%02s",$1,$2,$3}' But it does not work,it puts all the dates in one line,i want them in seperate lines like the... (6 Replies)
Discussion started by: tomjones
6 Replies

10. UNIX for Advanced & Expert Users

Edit file

Hi All, I have file with 200K Records and each line with 400 character. I need to edit the some part of the file. For example, i need to edit character from 115 to 125, 135to 145 and 344 to 361 Can you please anyone help me to do this? Regards, (1 Reply)
Discussion started by: balasubramani04
1 Replies
head(1) 						      General Commands Manual							   head(1)

NAME
head - Displays the beginning of files SYNOPSIS
Current Syntax head [-c bytes] [-n lines] [file...] Obsolescent Syntax head [-lines] [file...] STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: head: XCU5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. OPTIONS
The default count is 10. [Tru64 UNIX] Specifies the number of bytes to display. If the last byte written is not a newline character, a newline character is appended to the output. Specifies the number of lines to display Works exactly as -n lines. Obsolescent. OPERANDS
Path name of the input file. If you do not specify a file, head reads standard input. DESCRIPTION
The head command copies the standard input to standard output, ending output of each file at the specified point. NOTES
The obsolescent form is subject to withdrawal at any time. EXIT STATUS
The following exit values are returned: Successful completion. An error occurred. EXAMPLES
To display the first 5 lines of a file called test, enter: head -n 5 test To display the first ten lines of all files (except those with a name beginning with a period), enter: head * ENVIRONMENT VARIABLES
The following environment variables affect the execution of head: Provides a default value for the internationalization variables that are unset or null. If LANG is unset or null, the corresponding value from the default locale is used. If any of the internationalization vari- ables contain an invalid setting, the utility behaves as if none of the variables had been defined. If set to a non-empty string value, overrides the values of all the other internationalization variables. Determines the locale for the interpretation of sequences of bytes of text data as characters (for example, single-byte as opposed to multibyte characters in arguments and input files). Determines the locale for the format and contents of diagnostic messages written to standard error. Determines the location of message catalogues for the processing of LC_MESSAGES. SEE ALSO
Commands: cat(1), more(1), pg(1), sed(1), tail(1) Standards: standards(5) head(1)
All times are GMT -4. The time now is 05:17 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy