Sponsored Content
Top Forums Shell Programming and Scripting Insert text before first 'n' lines Post 302813385 by Jotne on Monday 27th of May 2013 07:05:31 AM
Old 05-27-2013
Put # before 10 first lines using awk.
Code:
awk 'NR<=10 {$0="#" $0} 1' file

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to insert some constant text at beginig of each line within a text file.

Dear Folks :), I am new to UNIX scripting and I do not know how can I insert some text in the first column of a UNIX text file at command promtp. I can do this in vi editor by using this command :g/^/s//BBB_ e,g I have a file named as Test.dat and it containins below text: michal... (4 Replies)
Discussion started by: Muhammad Afzal
4 Replies

2. Shell Programming and Scripting

Need to insert new text and change existing text in a file using SED

Hi all, I need to insert new text and change existing text in a file. For that I used the below line in the command line and got the expected output. sed '$a\ hi... ' shell > shell1 But I face problem when using the same in script. It is throwing the error as, sed: command garbled:... (4 Replies)
Discussion started by: iamgeethuj
4 Replies

3. Shell Programming and Scripting

how to insert text between lines of an existing file using perl

Hi , I need some inputs on how to open a file (file.txt) and parse the text example aaa of the file and bbb of the file and add the text zzzz once i parse (aaa and bbb) and followed by the remaining of the text as it is in the file using perl programming. Thanks in advance (3 Replies)
Discussion started by: madhul2002
3 Replies

4. UNIX for Dummies Questions & Answers

Insert Text on lines having the string word

I need help on how I can accomplish my task. I hope someone can help me since I've researching and trying to accomplish this for hours now. Basically, I need to comment-out (or insert a # sign in the beginning of the line) a line when the line has the specific word I am searching. Example I have... (3 Replies)
Discussion started by: Orbix
3 Replies

5. Shell Programming and Scripting

how to Insert values in multiple lines(records) within a pipe delimited text file in specific cols

this is Korn shell unix. The scenario is I have a pipe delimited text file which needs to be customized. say for example,I have a pipe delimited text file with 15 columns(| delimited) and 200 rows. currently the 11th and 12th column has null values for all the records(there are other null columns... (4 Replies)
Discussion started by: vasan2815
4 Replies

6. Shell Programming and Scripting

Insert a variable to a text file after fixed number of lines

Hi, I am new to unix. I need to insert a variable which contains some lines of text into a text file after fixed number of lines.. Please help me on this.. Thanks in Advance, Amrutha (3 Replies)
Discussion started by: amr89
3 Replies

7. Shell Programming and Scripting

sed insert text 2 lines above pattern

Hi I am trying to insert a block of text 2 lines above a pattern match using sed eg #Start of file entry { } #End of file entry new bit of text has to be put in just above the } eg #Start of file entry { New bit of text } #End of file entry (7 Replies)
Discussion started by: eeisken
7 Replies

8. Shell Programming and Scripting

Sed; insert text two lines above match

Hi! Considering below text, how would I use sed to insert text right below the v0005-line, using the SEPARATOR-line as a pattern to search for, so two lines above the separator? I can do it right above the separator, but not 2 lines... # v0004 - Some text # v0005 - More text #... (5 Replies)
Discussion started by: indo1144
5 Replies

9. Shell Programming and Scripting

Using sed to insert text between lines

Hello, I am trying to insert a section of text between lines in another text file. The new lines to be inserted are: abcd.efgh.zzzz=blah abcd.efgh.xxxx=blah Where N = 0 to 2 Original File: abcd.efgh.wwxx=aaaaa abcd.efgh.yyzz=bbbbb abcd.efgh.wwxx=aaaaa abcd.efgh.yyzz=bbbbb... (3 Replies)
Discussion started by: tsu3000
3 Replies

10. Shell Programming and Scripting

Insert Text after one, two, three lines & so on..

I want to insert "Text" in each file as a place where I mentioned below "Insert Text Here". These files are something like news of newspaper. Generally, newspaper headlines contain one or two lines. I don't know how it can be identified whether Text is inserted after first line or second line. ... (10 Replies)
Discussion started by: imranrasheedamu
10 Replies
English(3pm)						 Perl Programmers Reference Guide					      English(3pm)

NAME
English - use nice English (or awk) names for ugly punctuation variables SYNOPSIS
use English; use English qw( -no_match_vars ) ; # Avoids regex performance penalty # in perl 5.16 and earlier ... if ($ERRNO =~ /denied/) { ... } DESCRIPTION
This module provides aliases for the built-in variables whose names no one seems to like to read. Variables with side-effects which get triggered just by accessing them (like $0) will still be affected. For those variables that have an awk version, both long and short English alternatives are provided. For example, the $/ variable can be referred to either $RS or $INPUT_RECORD_SEPARATOR if you are using the English module. See perlvar for a complete list of these. PERFORMANCE
NOTE: This was fixed in perl 5.20. Mentioning these three variables no longer makes a speed difference. This section still applies if your code is to run on perl 5.18 or earlier. This module can provoke sizeable inefficiencies for regular expressions, due to unfortunate implementation details. If performance matters in your application and you don't need $PREMATCH, $MATCH, or $POSTMATCH, try doing use English qw( -no_match_vars ) ; . It is especially important to do this in modules to avoid penalizing all applications which use them. perl v5.18.2 2014-01-06 English(3pm)
All times are GMT -4. The time now is 10:46 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy