Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Search and Remove Lines within File
Top Forums Shell Programming and Scripting Search and Remove Lines within File Post 302391428 by leepet01 on Monday 1st of February 2010 09:49:17 AM
Old 02-01-2010
Search and Remove Lines within File
Hello,

I've searched through the scripting section but could not find what I need.

I need to search for empty sections within a file and remove them.

Here is an example file:
Code:
 
Title 123
A
B
C
D
E
 
Title 098
 
Title 567
Z
Y
X

I need to remove “Title 098” because it is empty, but keep sections and title header for “Title 123” & “Title 567”

So the output would be:

Code:
 
Title 123
A
B
C
D
E
 
Title 567
Z
Y
X

The "Title" is the common header of all sections from all inputed files. I use /bin/sh.

Any assistance would be GREATLY appreciative
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

different take on common ?: search for two strings and remove lines between them

Thank you for assisting, I've got a partial solution just needs a tweak. Hulk-BASH$ cat somefile.txt oh there is some stuff here some more stuff here START_LABEL stuff I want more stuff I want END_LABEL other stuff here too and even more stuff here too Hulk-BASH$ Hulk-BASH$ sed... (8 Replies)
Discussion started by: laser
8 Replies

2. UNIX for Dummies Questions & Answers

vi to remove lines in file

All, I have a text file with several entries like below: personname personname.domain.com I know there is a way to use vi to remove only the personname.domain.com line. Can someone help? I believe that it involves /s/g/ something...I just can't remember the exact syntax. Thanks (2 Replies)
Discussion started by: kjbaumann
2 Replies

3. Shell Programming and Scripting

remove lines from file

Hi gurus, i'm trying to remove a number of lines from a large file using the following command: sed '1,5000d' oldfile > newfile Somehow the lines in the old file are not deleted... Am I doing this wrongly? Any suggestions? :confused: Thanks! :) wee (10 Replies)
Discussion started by: lweegp
10 Replies

4. Shell Programming and Scripting

remove : lines from file

A small question I have a test.txt file I have contents as: a:google b:yahoo : c:facebook : d:hotmail How do I remove the line with : my output should be a:google b:yahoo c:facebook d:hotmail (5 Replies)
Discussion started by: aronmelon
5 Replies

5. Shell Programming and Scripting

Search and remove in a text file

Need help whit a script where I have to input a name and then remove a line where that name is in a file file ex: 001op;Name;Location;date 002op;Name;Location;date and so on.... can anybody help me??? thanks (4 Replies)
Discussion started by: nogame11
4 Replies

6. Shell Programming and Scripting

Search based on 1,2,4,5 columns and remove duplicates in the same file.

Hi, I am unable to search the duplicates in a file based on the 1st,2nd,4th,5th columns in a file and also remove the duplicates in the same file. Source filename: Filename.csv "1","ccc","information","5000","temp","concept","new" "1","ddd","information","6000","temp","concept","new"... (2 Replies)
Discussion started by: onesuri
2 Replies

7. Shell Programming and Scripting

Search and remove the lines

Hallo Team, Hope you are having a wonderful Friday. Here goes i am searching for a pattern and after finding the lines which contain this pattern i want to remove/delete them. This is my code: grep Originating BW*2013*|grep -v "ACCOUNT NOT FOUND"|grep -v "Unknown called number"|grep -v... (2 Replies)
Discussion started by: kekanap
2 Replies

8. Shell Programming and Scripting

How to search multiple patterns and remove lines from a file?

Hi, I have a file content as below. Table : PAYR Displayed fields: 15 of 15 Fixed columns: 4 List width 0999... (4 Replies)
Discussion started by: shirdi
4 Replies

9. UNIX for Dummies Questions & Answers

Want to remove all lines but not latest 50 lines from a file

Hi, I have a huge file which has Lacs of lines. File system got full. I want your guys help to suggest me a solution so that I can remove all lines from that file but not last 50,000 lines. I want solution which can remove lines from existing file so that I can have some space left with. (28 Replies)
Discussion started by: prashant2507198
28 Replies

10. Shell Programming and Scripting

Remove lines that are subsets of other lines in File

Hello everyone, Although it seems easy, I've been stuck with this problem for a moment now and I can't figure out a way to get it done. My problem is the following: I have a file where each line is a sequence of IP addresses, example : 10.0.0.1 10.0.0.2 10.0.0.5 10.0.0.1 10.0.0.2... (5 Replies)
Discussion started by: MisterJellyBean
5 Replies

LEARN ABOUT NETBSD

apropos

APROPOS(1)						    BSD General Commands Manual 						APROPOS(1)

NAME

     apropos -- search the complete content of all man pages

SYNOPSIS

     apropos [-123456789Ccp] [-n Number of results] [-S machine] [-s section] query

DESCRIPTION

     The apropos utility performs a full text search over the complete content of all man pages.  It uses the FTS engine of Sqlite to perform the
     search.  The database is created with the help of makemandb(8) utility.

     This implementation of the apropos utility is more sophisticated than the classical version of apropos.  Like modern search applications, it
     uses advanced techniques like stemming and term weighting to rank the matching results in decreasing order of relevance.  By default apropos
     will only display the top 10 matches in the output.

     Quotes are optional for specifying multiword queries.

     It supports the following options:

     -1      Search only within section 1 manual pages.

     -2      Search only within section 2 manual pages.

     -3      Search only within section 3 manual pages.

     -4      Search only within section 4 manual pages.

     -5      Search only within section 5 manual pages.

     -6      Search only within section 6 manual pages.

     -7      Search only within section 7 manual pages.

     -8      Search only within section 8 manual pages.

     -9      Search only within section 9 manual pages.

     -C      Do not show the context of the match.

     -c      Do show the context of the match (default).

     -n      Output up to the specified number of search results.  The default limit is 10.

     -p      Display all matching results and pipe them through a pager (defaulting to more(1)).

     -S machine
	     Limit the search to the pages for the specified machine architecture.  By default pages for all architectures are shown in the search
	     results.

     -s section
	     Restrict the search to the specified section of the manual.  By default, pages from all section are shown.  This option is for back-
	     wards compatibility with the classic version of apropos, using it is equivalent to using the [123456789] options directly.

FILES

     /var/db/man.db The Sqlite FTS database which contains an index of the manual pages.

SEE ALSO

     man(1), whatis(1), makemandb(8)

HISTORY

     The apropos command appeared in 3.0BSD.  It was rewritten in NetBSD 6.0 to support full text search using Sqlite.

AUTHORS

     Abhinav Upadhyay

BSD
								  April 21, 2012							       BSD
All times are GMT -4. The time now is 10:37 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy