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Full Discussion: Search for a string,delete the line and replace with new string in a file
Top Forums UNIX for Dummies Questions & Answers Search for a string,delete the line and replace with new string in a file Post 302956249 by RavinderSingh13 on Monday 28th of September 2015 11:04:01 AM
Old 09-28-2015
Quote:
Originally Posted by Pradhikshan
Thanks for your reply but i would like to delete the line that has the matching string and then replace the line with new string.
Hello Pradhikshan,

Following may help you in same, here I have taken an example of *.txt files, you can make it as per your requirement.
Code:
for i in *.txt; 
do 
   sed -i 's/^test test test$/"My new line here R. Singh"/g' $i; 
done

Line sed -i 's/^test test test$/"My new line here R. Singh"/g' $i; can be explained as sed -i 's/^Your required line to be changed$/"Your new line"/g' $i; Hope this helps you, let us know if you have any queries on same.

Thanks,
R. Singh
Last edited by RavinderSingh13; 09-28-2015 at 12:05 PM.. Reason: Added a comment about command explaination
This User Gave Thanks to RavinderSingh13 For This Post:
Pradhikshan
 

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LEARN ABOUT DEBIAN

gendesc

gendesc(1)							   User Manuals 							gendesc(1)

NAME

       gendesc - Generate a test case description file

SYNOPSIS

       gendesc [-h|--help] [-v|--version]
	       [-o|--output-filename filename]
	       inputfile

DESCRIPTION

       Convert plain text test case descriptions into a format as understood by genhtml.  inputfile needs to observe the following format:

       For each test case:

	    - one line containing the test case name beginning at the start of the line

	    - one or more lines containing the test case description indented with at least one whitespace character (tab or space)

       Example input file:

       test01
	      An example test case description.
	      Description continued

       test42
	      Supposedly the answer to most of your questions

       Note: valid test names can consist of letters, decimal digits and the underscore character ('_').

OPTIONS

       -h
       --help
	      Print a short help text, then exit.

       -v
       --version
	      Print version number, then exit.

       -o filename
       --output-filename filename
	      Write description data to filename.

	      By default, output is written to STDOUT.

AUTHOR

       Peter Oberparleiter <Peter.Oberparleiter@de.ibm.com>

SEE ALSO

       lcov(1), genhtml(1), geninfo(1), genpng(1), gcov(1)

2010-08-06							     LCOV 1.9								gendesc(1)
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