Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: how to get rid of blank line in a flat text file
Top Forums Shell Programming and Scripting how to get rid of blank line in a flat text file Post 36171 by oombera on Thursday 22nd of May 2003 10:45:24 AM
Old 05-22-2003
You can use awk:
Code:
awk '$1 !~ /(^$)/' someFile > someNewFile
mv someNewFile someFile

Or you can use sed:
Code:
sed '/^$/ d' someFile > someNewFile
mv someNewFile someFile

And here's a script copied from the man page for sed:
Code:
In this example, sed removes all blank lines (including those with just
<Tab> and <Space> characters) from padded_file:

   sed '
   /^$/ d
   /^[<Tab><Space>]*$/ d
   ' padded_file

Last edited by oombera; 05-22-2003 at 11:55 AM..
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Creating flat text file (ASCII)

Hi everybody. I need help and I hope someone is willing to help me out here. My wholesale company is currently moving to new software. The old software is running on a UNIX platform. We need to migrate data from the UNIX system, but our former software provider refuses to assist the data... (5 Replies)
Discussion started by: Wdonero
5 Replies

2. Shell Programming and Scripting

insert text and add blank line

I need your help, I want to add a text every 2nd line and also a blank line after 3 line (In the output 2nd line is "changetype: modify" and every 4th line is blank line) Input file format dn: abc orclsourceobjectdn: abcd dn: bcd orclsourceobjectdn: bcda dn: cba orclsourceobjectdn:... (7 Replies)
Discussion started by: athidhi
7 Replies

3. Shell Programming and Scripting

Random word from a flat text file

Hello, I need to take a random word from a flat text file with words in it seperated by spaces. The code I am using, always gives me the first word. Can anyone please shed some light on this. Here's my code. Thanks echo table roof ceiling jar computer monitor keyboard carpet >... (5 Replies)
Discussion started by: Freakhan
5 Replies

4. Shell Programming and Scripting

Getting Rid of Having to Write to Flat Files

Ok, so i've been having to write to flat files lately and then making my script read information from the flat file and then work off of that. i dont want to keep doing that because i believe it creates a mess. i like to keep my work all to one script instead of having that one script... (7 Replies)
Discussion started by: SkySmart
7 Replies

5. Shell Programming and Scripting

Delete the last empty/blank line of the text file

Hi All, I have a file.txt which seems like having three lines. wc -l file.txt 3 file.txt In fact, once it is open in text editor, this file has four lines where the last line is empty. how can i delete this last empty line of the file.txt? I tried the codes below so far but they... (6 Replies)
Discussion started by: senayasma
6 Replies

6. UNIX for Dummies Questions & Answers

Any way to get rid of ^M characters in a text file using pr?

When I use vi to see what's in the file I get this: int add1(int x) {^M return x + 1;^M} ^Mint subtract1(int x) {^M return x - 1;^M} ^Mint double_it(int x) {^M return x * 2;^M} ^Mint halve_it(int x) {^Mreturn x / 2;^M} ^Mint main() {^M int myint;^M int result;^M ... (2 Replies)
Discussion started by: Nonito84
2 Replies

7. Shell Programming and Scripting

How to remove blank line from a text file?

Hi All, I am creating a text file using perl. The first record I am writing as "$line" and all the other as "\n$line". At the end the file is having N number of lines. I am using this file for MLOAD (Teradata), which is reading N+1 lines in the file and failing.I am not able to find new line... (2 Replies)
Discussion started by: unankix
2 Replies

8. Shell Programming and Scripting

Get line number in flat file

Hi, Is there a way to find out the line number from where the data starts? like if the data contains column header, irrespective of the text in the column header we should get the line number from which contains the column header. I am sorry if I haven't explained the problem clearly. ... (8 Replies)
Discussion started by: kedar_laveti
8 Replies

9. Shell Programming and Scripting

How to identify exact text and then add a blank line above it using sed?

I need to identify the exact text of San Antonio Generator Running in the output my script which lands to a text file. Once SED finds the specific text, I need it to insert one line above the matched text. Here is what I have so far that isn't working all that well for me. Any help would be... (7 Replies)
Discussion started by: jbrass
7 Replies

10. Shell Programming and Scripting

In a file, replace blank line by the last line not blank above

Dear All, In a CSV file, say that a given column has been extracted. In that column, information is missing (i.e. blank lines appear). I would like to replace the blank lines by the last valid line (not blank) previously read. For example, consider the extract below: 123 234 543 111... (7 Replies)
Discussion started by: bagvian
7 Replies

LEARN ABOUT MOJAVE

locale::codes::langfam5.18

Locale::Codes::LangFam(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangFam(3pm)

NAME

       Locale::Codes::LangFam - standard codes for language extension identification

SYNOPSIS

	  use Locale::Codes::LangFam;

	  $lext = code2langfam('apa');		       # $lext gets 'Apache languages'
	  $code = langfam2code('Apache languages');    # $code gets 'apa'

	  @codes   = all_langfam_codes();
	  @names   = all_langfam_names();

DESCRIPTION

       The "Locale::Codes::LangFam" module provides access to standard codes used for identifying language families, such as those as defined in
       ISO 639-5.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639-5
       language family codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language families. A code set may be specified using either a name, or a
       constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lext = code2langfam('apa','alpha');
	  $lext = code2langfam('apa',LOCALE_LANGFAM_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from ISO 639-5 such as 'apa' for Apache languages.

	   This is the default code set.

ROUTINES

       code2langfam ( CODE [,CODESET] )
       langfam2code ( NAME [,CODESET] )
       langfam_code2code ( CODE ,CODESET ,CODESET2 )
       all_langfam_codes ( [CODESET] )
       all_langfam_names ( [CODESET] )
       Locale::Codes::LangFam::rename_langfam  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangFam::add_langfam  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangFam::delete_langfam  ( CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangFam::delete_langfam_alias  ( NAME )
       Locale::Codes::LangFam::rename_langfam_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::delete_langfam_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.loc.gov/standards/iso639-5/id.php
	   ISO 639-5 .

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 2011-2013 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.18.2							    2013-11-04					       Locale::Codes::LangFam(3pm)
All times are GMT -4. The time now is 02:25 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy