Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: replacing multiple lines with single line
Top Forums Shell Programming and Scripting replacing multiple lines with single line Post 302199837 by ripat on Wednesday 28th of May 2008 02:43:30 AM
Old 05-28-2008
I don't have a HP-UX box to test but try any of the following:
Code:
 # delete all CONSECUTIVE blank lines from file except the first; also
 # deletes all blank lines from top and end of file (emulates "cat -s")
 sed '/./,/^$/!d'          # method 1, allows 0 blanks at top, 1 at EOF
 sed '/^$/N;/\n$/D'        # method 2, allows 1 blank at top, 0 at EOF

 # delete all CONSECUTIVE blank lines from file except the first 2:
 sed '/^$/N;/\n$/N;//D'

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Splitting a single line into multiple lines

I have a case where, I need to look into a file. Go to each line of the file, find the length of the line, if the length of the line is more than 75 chars, I need to split the line into multiple lines of 75chars max. If the length of the line is less than 75, we need not do anything. So at the... (4 Replies)
Discussion started by: thanuman
4 Replies

2. Shell Programming and Scripting

Getting multiple messy lines into one single line

I have a file that contains the following: :@:176:@:4:@:name:@:file:@:this is a summary:@:description can be long but who knows can even have <br> tags.:@:how to:@:type:@:18544:@:550:@:400:END: :@:177:@:9:@:name:@:file:@:summary:@:this will containg... (18 Replies)
Discussion started by: sysrenan
18 Replies

3. Shell Programming and Scripting

Multiple lines into a single line

Hi, I've some files with the following data and i need to convert the lines between the separator ---, into a single line. I've tried with the paste cmd but my main problem is that the number of lines between the separator is not fix, it can very between 1-4 lines. Input --- 2010-02-22... (4 Replies)
Discussion started by: RickyC9999
4 Replies

4. Shell Programming and Scripting

Multiple lines into a single line on Ubuntu 10.04

Hi, I've some files with the following data and i need to convert the lines between the separator ---, into a single line. I've tried with the paste cmd but my main problem is that the number of lines between the separator is not fix, it can vary between 1-4 lines. Input --- 2010-02-22... (8 Replies)
Discussion started by: RickyC9999
8 Replies

5. Shell Programming and Scripting

Multiple lines in a single column to be merged as a single line for a record

Hi, I have a requirement with, No~Dt~Notes 1~2011/08/1~"aaa bbb ccc ddd eee fff ggg hhh" Single column alone got splitted into multiple lines. I require the output as No~Dt~Notes 1~2011/08/1~"aaa<>bbb<>ccc<>ddd<>eee<>fff<>ggg<>hhh" mean to say those new lines to be... (1 Reply)
Discussion started by: Bhuvaneswari
1 Replies

6. UNIX for Dummies Questions & Answers

Replacing 2 lines by single line

Hi I have a file with below content : a b S I need to replace the lines which have a and b continuously by d. d S I have used the below code tr '\n' '#'<file|sed. 's/a#b/d/g's?|tr '#' '\n' where # is not occurring anywhere in the file.. Is there any other efficient way to do this? ... (7 Replies)
Discussion started by: pandeesh
7 Replies

7. Shell Programming and Scripting

Replacing a single line with multiple lines in a file

Hi Am confused with the usage of "sed" command I want to replace a single line with multiple lines of a file.. eg., A file has Hi, How are you? I need to replace as Am fine What are You doing? I used the script as string1="Hi, How are you?" echo "$string1 is the value"... (4 Replies)
Discussion started by: Priya Amaresh
4 Replies

8. Shell Programming and Scripting

Combine multiple lines into single line

Hi All , I have a file with below data # User@Host: xyz @ # Query_time: t1 Lock_time: t2 Rows_sent: n1 Rows_examined: n2 SET timestamp=1396852200; select count(1) from table; # Time: 140406 23:30:01 # User@Host: abc @ # Query_time: t1 Lock_time: t2 Rows_sent: n1 Rows_examined:... (6 Replies)
Discussion started by: rakesh_411
6 Replies

9. Shell Programming and Scripting

Merge multiple lines into a single line

Hi all, I'm relatively new to scripting, I can do pretty basic things. I have a daily log file that looks like: timestamp=2017-06-28-01.01.35.080576; event status=0; userid=user1; authid=user1; application id=10.10.10.10.11111.12345678901; application name=GUI; ... (29 Replies)
Discussion started by: dwdnet
29 Replies

10. UNIX for Beginners Questions & Answers

Multiple lines to single line

I have code as below # create temporary table `temp4277`(key(waybill_no)) select waybill_no,concat_ws('',card_type,card_series_no) cardinfo from rfid_temp_ticket where waybill_no='4277' group by... (4 Replies)
Discussion started by: kaushik02018
4 Replies

LEARN ABOUT SUNOS

winsdelln

insdelln(3XCURSES)					  X/Open Curses Library Functions					insdelln(3XCURSES)

NAME

       insdelln, winsdelln - insert/delete lines to/from the window

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib 
       -R /usr/xpg4/lib -lcurses [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       int insdelln(int n);

       int winsdelln(WINDOW *win, int n);

PARAMETERS

       n		       Is the number of lines to insert or delete (positive n inserts; negative n deletes).

       win		       Is a pointer to the window in which to insert or delete a line.

DESCRIPTION

       The  insdelln()	and  winsdelln() functions insert or delete blank  lines  in stdscr or win, respectively.  When n is positive, n lines are
       added before the current line  and the bottom n lines are lost; when n is negative, n lines  are deleted starting with  the  current  line,
       the remaining lines are moved up,  and the bottom n lines are cleared. The position of the cursor does not change.

RETURN VALUES

       On success, these functions return OK. Otherwise, they return ERR.

ERRORS

       None.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       deleteln(3XCURSES), insertln(3XCURSES), libcurses(3XCURSES), attributes(5), standards(5)

SunOS 5.10							    5 Jun 2002							insdelln(3XCURSES)
All times are GMT -4. The time now is 12:35 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy