Sponsored Content
Top Forums UNIX for Dummies Questions & Answers sed command to Insert a line before the last four lines of the file Post 302955519 by wridler on Friday 18th of September 2015 06:02:48 AM
Old 09-18-2015
sed command to Insert a line before the last four lines of the file

By using sed command, How to insert a new line before the last four lines of the file.

Code:
Old Line
Old Line
NEW LINE!
Old Line
Old Line
Old Line
Old Line


Last edited by wridler; 09-18-2015 at 07:36 AM.. Reason: code tags
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Insert a line including Variable & Carriage Return / sed command as Variable

I want to instert Category:XXXXX into the 2. line something like this should work, but I have somewhere the wrong sytanx. something with the linebreak goes wrong: sed "2i\\${n}Category:$cat\n" Sample: Titel Blahh Blahh abllk sdhsd sjdhf Blahh Blah Blahh Blahh Should look like... (2 Replies)
Discussion started by: lowmaster
2 Replies

2. Shell Programming and Scripting

Delete a line between selected lines using sed or any other command

I want to delete a line between selected lines using sed: e.g. : Between "bus" to "pins", delete lines conaining "signal" word. Input : bus direction signal new signal old pins signal ok end Desired Output: bus direction pins signal end (4 Replies)
Discussion started by: nehashine
4 Replies

3. Shell Programming and Scripting

Sed insert text at first line of empty file

I can't seem to get sed to allow me to insert text in the first line of an empty file. I have a file.txt that is a 0 byte file. I want sed to insert " fooBar" onto the first line. I've tried a few options and nothing seems to work. They work just fine if there's text in the file tho. Help? (4 Replies)
Discussion started by: DC Slick
4 Replies

4. Shell Programming and Scripting

Using sed to insert text file at first line

sed '1r file.txt' <source.txt >desti.txt This example will insert 'file.txt' between line 1 and 2 of source.txt. sed '0r file.txt' <source.txt >desti.txt gives an error message. Does anyone know how 'sed' can insert 'file.txt' before the first line of source.txt? (18 Replies)
Discussion started by: psve
18 Replies

5. Shell Programming and Scripting

Insert few lines above a match using sed, and within a perl file.

Greetings all, I am trying to match a string, and after that insert a few lines above that match. The string is "Version 1.0.0". I need to insert a few lines ONLY above the first match (there are many Version numbers in the file). The rest of the matches must be ignored. The lines I need to... (2 Replies)
Discussion started by: nagaraj s
2 Replies

6. Shell Programming and Scripting

Insert shell command into first line of output file

How can I insert the command executed on the shell into the first line of my output file? For example if I execute; zcat *.gz |grep “User5501” > users.out How can I make my users.out look like; zcat *.gz |grep “User5501” > users.out User5501 PA User5501 UA User5501 ZA... (3 Replies)
Discussion started by: lewk
3 Replies

7. 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

8. 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

9. Shell Programming and Scripting

sed insert new line does not update file

Hi all, I have a file called "text.cpp" with the first line of "1" afterwards I tried in Ubuntu to type the following sed '12iasdasdasdasdsad' test.cpp > output.txt however when I tried to see the result of output.txt #cat output.txt 1 why is the line 12 is not updated to the... (6 Replies)
Discussion started by: peuceul
6 Replies

10. Shell Programming and Scripting

Insert charactera in 1st position of specific lines using vi editor or sed command

Dear all, i am having text file like below surya rama ranga laxman rajesh reddy i want add string (OK) before a text from line 3 to 5 the result will be surya rama OK ranga OK laxman OK rajesh reddy (1 Reply)
Discussion started by: suryanarayana
1 Replies
diffmk(1)							   User Commands							 diffmk(1)

NAME
diffmk - mark differences between versions of a troff input file SYNOPSIS
diffmk oldfile newfile markedfile DESCRIPTION
diffmk compares two versions of a file and creates a third version that includes "change mark" (.mc) commands for nroff(1) and troff(1). oldfile and newfile are the old and new versions of the file. diffmk generates markedfile, which, contains the text from newfile with troff(1) "change mark" requests (.mc) inserted where newfile differs from oldfile. When markedfile is formatted, changed or inserted text is shown by | at the right margin of each line. The position of deleted text is shown by a single *. USAGE
See largefile(5) for the description of the behavior of diffmk when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes). EXAMPLES
Example 1: An example of the diffmk command. diffmk can also be used in conjunction with the proper troff requests to produce program listings with marked changes. In the following command line: example% diffmk old.c new.c marked.c ; nroff reqs marked.c | pr the file reqs contains the following troff requests: .pl 1 .ll 77 .nf .eo .nh which eliminate page breaks, adjust the line length, set no-fill mode, ignore escape characters, and turn off hyphenation, respectively. If the characters | and * are inappropriate, you might run markedfile through sed(1) to globally change them. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWdoc | +-----------------------------+-----------------------------+ SEE ALSO
diff(1), nroff(1), sed(1), troff(1), attributes(5), largefile(5) BUGS
Aesthetic considerations may dictate manual adjustment of some output. File differences involving only formatting requests may produce undesirable output, that is, replacing .sp by .sp 2 will produce a "change mark" on the preceding or following line of output. SunOS 5.10 14 Sep 1992 diffmk(1)
All times are GMT -4. The time now is 02:18 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy