Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

sed to find first appearance and append string

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting sed to find first appearance and append string
# 8  
Old 02-14-2011
No change pravin...

@ctsgnb: How using awk???
# 9  
Old 02-14-2011
I updated my previous post :
Use something like :

Code:
nawk '/^GROUP A/&&!f{sub(/$/," vkk",$0);f=1}1' $i > $i.new

(or gawk or mawk or just awk depending on what is available and what works on your machine)
# 10  
Old 02-14-2011
Excellent!!! That worked...Thanks for your effort Smilie
# 11  
Old 02-14-2011
A bit variation in technique:
Code:
awk -v c=0 '/^GROUP/&&c==0 { print $0" vvk";c=1;next}1' input_File

# 12  
Old 02-14-2011
Quote:
Originally Posted by ctsgnb
Should use awk instead of sed.
Hello, ctsgnb: That's just crazy talk. This situation clearly calls for [s]ed Smilie
Code:
 printf '/^GROUP A/s/$/ vkk/\nw\nq\n' | ed -s file

Code:
ed -s file <<EOED
/^GROUP A/s/$/ vkk/
w
q
EOED

Code:
sed '
/^GROUP A/ {
    s/$/ vkk/
    :loop
    n
    b loop
}' file

Regards,
Alister
This User Gave Thanks to alister For This Post:
ctsgnb
# 13  
Old 02-15-2011
@Alister :

Yes , i am crazy, that's not a scoop Smilie

And you're true, i should have written "Could use awk"
and not "Should use awk instead of sed"

I just don't masterise [s]ed as well as you do

Thanks for your lights ! Smilie
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Gnu tool; sed awk echo etc to prepend or append string to a file

Looking to add text to a file, example File example; nodegroups: check-hosts: L@host.domain.com,host2.domain.com,host3.domain.com I need to take a file with a one line list of hosts separated by commas host.domain.com,host2.domain.com,host3.domain.comand prepend the string " ... (6 Replies)
Discussion started by: bash_in_my_head
6 Replies

2. Shell Programming and Scripting

Using sed to find and append or insert on SAME line

Hi, $ cat f1 My name is Bruce and my surname is I want to use SED to find “Bruce” and then append “ Lee” to the end of the line in which “Bruce” is found Then a more tricky one…. I want to INSERT ….a string… in to a line in which I find sometihng. So example $ cat f2 My name is... (9 Replies)
Discussion started by: Imre
9 Replies

3. Shell Programming and Scripting

Find string in file and append new string after

Hi All, I'm trying to insert a string into a file at a specific location. I'd like to add a string after the parent::__construct(); in my file. <?php if (! defined('BASEPATH')) exit('No direct script access allowed'); class MY_Controller extends CI_Controller { function... (6 Replies)
Discussion started by: jjkilpatrick
6 Replies

4. Shell Programming and Scripting

Using sed to Find first string, then next string

I know that if file is now is the time for all good men house boat car for sed -n -e '/is/,/for/p' file will print (3 Replies)
Discussion started by: sumguy
3 Replies

5. Shell Programming and Scripting

sed - Find a String and append a text end of the Line

Hi, I have a File, which have multiple rows. Like below 123456 Test1 FNAME JRW#$% PB MO Approver XXXXXX. YYYY 123457 Test2 FNAME JRW#$% PB MO Super XXXXXX. YYYY 123458 Test3 FNAME JRW#$% PB MO Approver XXXXXX. YYYY I want to search a line which contains PB MO Approver and append... (2 Replies)
Discussion started by: java2006
2 Replies

6. Shell Programming and Scripting

Append a searched string with another string using sed

Hi, I need to replace and append a string in a text if grep is true. For eg: grep ABC test.txt | grep -v '\.$' | awk {'print $4'} | sed "s/ ? How do I replace all instances of "print $4" using sed with another sring? Eg of the string returned will be, lx123 web222 xyz Want to... (8 Replies)
Discussion started by: vchee
8 Replies

7. Shell Programming and Scripting

Find string in a file and append character

Hi Experts, Is there a way to find a string in a file then append a character to that string then save the file or save to another file. Here is an example. >cat test.txt NULL NULL NULL 9,800.00 NULL 1,234,567.01 I want to find all NON NULL String and add a dollar sign to those... (9 Replies)
Discussion started by: brichigo
9 Replies

8. Shell Programming and Scripting

sed append to string

I am trying to replace in multiple files every instance of text that begins with http and add hyperlink characters to it. I can get it to work with the following:sed -e "s/http*.*/<a href=\"&\">&<\/a>/g" * as long as the http text is at the end of the file. I need it to stop at the end of the... (2 Replies)
Discussion started by: numele
2 Replies

9. UNIX for Advanced & Expert Users

bash/grep/awk/sed: How to extract every appearance of text between two specific strings

I have a text wich looks like this: clid=2 cid=6 client_database_id=35 client_nickname=Peter client_type=0|clid=3 cid=22 client_database_id=57 client_nickname=Paul client_type=0|clid=5 cid=22 client_database_id=7 client_nickname=Mary client_type=0|clid=6 cid=22 client_database_id=6... (3 Replies)
Discussion started by: Pioneer1976
3 Replies

10. Shell Programming and Scripting

how to find the line number of a pattern of first appearance??

Hi, I am doin a project in shell script please answer the above question..... waiting........ (2 Replies)
Discussion started by: shivarajM
2 Replies
Login or Register to Ask a Question