Pattern Replace using sed or awk


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Pattern Replace using sed or awk
# 8  
Old 05-31-2011
Code:
awk '{$(NF-1)=$(NF-1)"="$NF;$NF=""}1'  inputfile

suppose you have five fields and you want to make fourth and fifth with '=' in between.

$(NF-1) will point to fourth field.
and we are assinging new value to fourth field, the new value is $(NF-1)"="$NF

which concats the fourth field and fifth field using a '=' and we are assigning null to the actual fifith field.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Find pattern and replace using sed

Hi, i want to replace the following lines in such a way that if the word merge exists in first column it must replace the 3rd column as M and if parse exists in first column then the last column must P, if neither it must mark it as X. I have tried the solution using awk, but it is saying... (6 Replies)
Discussion started by: charlie87
6 Replies

2. UNIX for Beginners Questions & Answers

sed replace pattern

I have a file with multiple lines, all in the same format. For each line, I need to replace the sequence of digits after the last : with a new value, but keep the single quote at the end of the line. Example: Input: ( two lines of file) Name: 'text1:200/text2:1.2.3.4' Name2:... (19 Replies)
Discussion started by: Beginner101
19 Replies

3. Shell Programming and Scripting

sed find/replace a pattern, but not this one..

I've got a file like so: ...lots of lines, etc. push "route 10.8.0.0 255.255.255.0" push "route 192.168.1.123 255.255.255.0" ...lots of lines, etc. I want to sed find/replace the IP address in the second line, whatever it is, with a new IP address, but I don't want to touch the first line.... (5 Replies)
Discussion started by: DaHai
5 Replies

4. Shell Programming and Scripting

sed command to replace two character pattern with another pattern

Not able to paste my content. Please see the attachment :-( (2 Replies)
Discussion started by: vivek d r
2 Replies

5. Shell Programming and Scripting

Sed/awk/perl command to replace pattern in multiple lines

Hi I know sed and awk has options to give range of line numbers, but I need to replace pattern in specific lines Something like sed -e '1s,14s,26s/pattern/new pattern/' file name Can somebody help me in this.... I am fine with see/awk/perl Thank you in advance (9 Replies)
Discussion started by: dani777
9 Replies

6. Shell Programming and Scripting

replace using pattern using awk or sed

I have file file_1.txt which contains: file_1.txt <tr> 1 MAIL # 1 TO src_1 </tr> <tr><td class="hcol">col_id</td> <td class="hcol">test_dt</td> <td class="hcol">user_type</td> <td class="hcol">ct</td></tr> <tr><td class="bcol">1</td> <td class="bcol">2012-09-20</td> <td class="bcol">a</td>... (2 Replies)
Discussion started by: sol_nov
2 Replies

7. Shell Programming and Scripting

Replace a pattern in a file with a generated number using sed or awk

my file has thousands of line but let me show what i want to achieve... here is one line from that file cat fileName.txt (2,'','user3002,user3003','USER_DATA_SINGLE',1,0,0,'BACKUP',2,NULL,0,450,NULL,NULL,'','2011-05-10... (13 Replies)
Discussion started by: vivek d r
13 Replies

8. Shell Programming and Scripting

sed or awk command to replace a string pattern with another string based on position of this string

here is what i want to achieve... consider a file contains below contents. the file size is large about 60mb cat dump.sql INSERT INTO `table1` (`id`, `action`, `date`, `descrip`, `lastModified`) VALUES (1,'Change','2011-05-05 00:00:00','Account Updated','2012-02-10... (10 Replies)
Discussion started by: vivek d r
10 Replies

9. Shell Programming and Scripting

How to replace the last pattern using sed?

myfile: AAAaaa BBBbbb CCCccc AAAeee DDDddd how to replace the last AAA as EEEEE using sed? like this: AAAaaa BBBbbb CCCccc EEEEEeee DDDddd (14 Replies)
Discussion started by: vistastar
14 Replies

10. Shell Programming and Scripting

SED Search Pattern and Replace with the Pattern

Hello All, I have a string "CP_STATUS OSSRC_R6_0_Shipment_R1H_CU AOM_901046 R1H_LLSV1_2008031", and I just want to extract LLSV1, but I dont get the expected result when using the sed command below. # echo "CP_STATUS OSSRC_R6_0_Shipment_R1H_CU AOM_901046 R1H_LLSV1_2008031" | awk '{print... (4 Replies)
Discussion started by: racbern
4 Replies
Login or Register to Ask a Question
IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME
igawk - gawk with include files SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ... igawk [ all gawk options ] [ -- ] program-text file ... DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1). AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like @include getopt.awk in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path. OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports. EXAMPLES
cat << EOF > test.awk @include getopt.awk BEGIN { while (getopt(ARGC, ARGV, "am:q") != -1) ... } EOF igawk -f test.awk SEE ALSO
gawk(1) Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995. AUTHOR
Arnold Robbins (arnold@skeeve.com). Free Software Foundation Nov 3 1999 IGAWK(1)