Sponsored Content
Top Forums Shell Programming and Scripting Insert at the beginning of odd lines Post 302698607 by bakunin on Monday 10th of September 2012 10:15:09 AM
Old 09-10-2012
Read in two lines at once with the "N" subcommand, then insert after the "\n", which is the newline separating the lines:

Code:
sed 'N;s/\n/&=changes here=/p'

In case of files with uneven numbers of lines you will have to introduce a special rule for the last line ("$"), otherwise the last line will not be printed.

I hope this helps.

bakunin
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Insert two strings at the beginning and at the end of each line of a file

Hi, excuse me for my poor english. My problem is that: I have a File i want to add to each line of that file two strings: one at the beginning of the line, one at the ending. string1="abcd" string2="efgh" i want $string1 content $string2 for each line. Is that possible? (3 Replies)
Discussion started by: Linux-fueled
3 Replies

2. Shell Programming and Scripting

print ODD lines

i want to print ODD lines like first ,third then fifth and so on 234,567,ABC,KJL 234,565,ABD,KJL 234,568,ABE,KJL 234,560,ABF,KJL 234,563,ABG,KJL 234,562,ABH,KJL O/P will be like 234,567,ABC,KJL ----->first liine 234,568,ABE,KJL ----->third line 234,563,ABG,KJL ----->fifth line... (6 Replies)
Discussion started by: aaysa123
6 Replies

3. Shell Programming and Scripting

Need to insert text(constant) at the beginning of file

I am very new to scripting and I know this request is simple but I am having no luck with it. I have a file a.dat with the following data in it. aa bb cc dd I need to run a script that will take each line of a.dat and put dsjc/ubin/ in front of each record, so the output looks like ... (2 Replies)
Discussion started by: jclanc8
2 Replies

4. Shell Programming and Scripting

SED - insert space at the beginning of line and multi replace command

hi I am trying to use SED to replace the line matching a pattern using the command sed 'pattern c\ new line ' <file1 >file 2 I got two questions 1. how do I insert a blank space at the beginning of new line? 2. how do I use this command to execute multiple command using the -e... (5 Replies)
Discussion started by: piynik
5 Replies

5. Shell Programming and Scripting

Insert output from a file to beginning of line with sed

Hi I've been trying to search but couldn't quite get the answer I was looking for. I have a a file that's like this Time, 9/1/12 0:00, 1033 0:10, 1044 ... 23:50, 1050 How do I make it so the file will be like this? 9/1/12, 0:00, 1033 9/1/12, 0:10, 1044 ... 9/1/12, 23:50, 1050 I... (4 Replies)
Discussion started by: diesel88
4 Replies

6. Shell Programming and Scripting

Sum product of even/odd lines

Hi, I have a text file like this 6.0000E-02 0.00000E+00 0.0000 0.00000E+00 0.0000 7.0000E-02 5.00000E-10 1.0000 5.00000E-10 1.0000 8.0000E-02 3.00000E-09 0.4082 3.00000E-09 0.4082 9.0000E-02 3.50000E-09 0.3780 3.50000E-09 0.3780 1.0000E-01 1.00000E-09... (2 Replies)
Discussion started by: f_o_555
2 Replies

7. Shell Programming and Scripting

Insert text at the beginning of every even number line

i am trying to insert text at the beginning of every even number line with awk i can do it with odd number lines with this command awk 'NR%2{$0="some text "$0}1' filehow can i edit this command thanks (5 Replies)
Discussion started by: bob123
5 Replies

8. UNIX for Dummies Questions & Answers

Replace character in odd or even lines

Hello, I'm here again asking for your precious help. I'm writing some code to convert csv files to html. I want to highlight header and also I want to have rows with alternate colors. So far this is my work###Let's format first line only with some color cat $fileIN".tmp1" | sed '1... (7 Replies)
Discussion started by: emare
7 Replies

9. UNIX for Advanced & Expert Users

Insert a column in the beginning

Hi, I have been trying to see how i can insert a column in the beginning to my html table This is how it looks Name Age Sid 32 John 33 Mary 34 I want to insert a column Job before Name column, so it looks like Job Name Age IT Sid 32 Doctor... (3 Replies)
Discussion started by: sidnow
3 Replies

10. UNIX for Beginners Questions & Answers

How to use sed to insert character in the beginning of file path?

I need to manipulate one Database file on Solaris 11 in which contains more than 5000 lines of data file path like this: '/data1/oradata/DBNAME/system01.dbf', '/data7/oradata/DBNAME/undotbs1_01.dbf', '/data1/oradata/DBNAME/sysaux01.dbf', '/data28/oradata/DBNAME/userdata01.dbf', ... (6 Replies)
Discussion started by: duke0001
6 Replies
PASTE(1)						    BSD General Commands Manual 						  PASTE(1)

NAME
paste -- merge corresponding or subsequent lines of files SYNOPSIS
paste [-s] [-d list] file ... DESCRIPTION
The paste utility concatenates the corresponding lines of the given input files, replacing all but the last file's newline characters with a single tab character, and writes the resulting lines to standard output. If end-of-file is reached on an input file while other input files still contain data, the file is treated as if it were an endless source of empty lines. The options are as follows: -d list Use one or more of the provided characters to replace the newline characters instead of the default tab. The characters in list are used circularly, i.e., when list is exhausted the first character from list is reused. This continues until a line from the last input file (in default operation) or the last line in each file (using the -s option) is displayed, at which time paste begins selecting characters from the beginning of list again. The following special characters can also be used in list: newline character tab character \ backslash character Empty string (not a null character). Any other character preceded by a backslash is equivalent to the character itself. -s Concatenate all of the lines of each separate input file in command line order. The newline character of every line except the last line in each input file is replaced with the tab character, unless otherwise specified by the -d option. If '-' is specified for one or more of the input files, the standard input is used; standard input is read one line at a time, circularly, for each instance of '-'. EXIT STATUS
The paste utility exits 0 on success, and >0 if an error occurs. EXAMPLES
List the files in the current directory in three columns: ls | paste - - - Combine pairs of lines from a file into single lines: paste -s -d ' ' myfile Number the lines in a file, similar to nl(1): sed = myfile | paste -s -d ' ' - - Create a colon-separated list of directories named bin, suitable for use in the PATH environment variable: find / -name bin -type d | paste -s -d : - SEE ALSO
cut(1), lam(1) STANDARDS
The paste utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible. HISTORY
A paste command appeared in Version 32V AT&T UNIX. BSD
June 25, 2004 BSD
All times are GMT -4. The time now is 06:04 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy