How to replace the 2nd character in a string using sed?

bharathappriyan · #1 (**permalink**) 3 Weeks Ago

Hi,
i have string var1=NN. Based on conditions, i have to change this first N to Y or second N to Y and send the details to other process. How to do that? This is a linux machine.

Thanks,
Selva

jim mcnamara · #2 (**permalink**) 2 Weeks Ago

bash has this:
${string

osition:length}

Code:

var1="NN"
if [[ "$condition1" = "OK" ]] ; then
   tmp="Y""${var1:2:1}"
else
   tmp="${var1:1:1}""Y"
fi 
var1=$tmp

gives YN and NY depending on condition1

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
Replace any control character in the string	hansini	Shell Programming and Scripting	2	06-26-2009 04:54 PM
read in a file character by character - replace any unknown ASCII characters with spa	raghav525	Shell Programming and Scripting	1	04-20-2009 01:52 PM
Find and replace character in a string	callimaco0082	UNIX for Dummies Questions & Answers	7	04-10-2008 10:47 AM
replace character in a string pattern and save the change in same file	mihir0011	Shell Programming and Scripting	2	09-26-2007 05:31 PM
replace first character of string sed	prkfriryce	Shell Programming and Scripting	6	08-03-2007 02:07 PM

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode	Rate This Thread:


	Powered by