Hi Guys ,
Thanks for all the details , and sorry for not being too descriptive about my problem.

Let me try to explain again with proper details.

I am writing a shell script in bash in which i want to search and replace a particular string at particular line using a variable in AIX, and i can accomplish that using below command.


For example :- I have a file with name abc.txt with below 2 lines

Code:

Hello , My name is MOHIT
I am learning shell script

Now ,i have some variables in my script that have following values

Code:

line_number=1
current_value=MOHIT
new_value=Ankit

code :

Code:

cat abc.txt | sed -e $line_number"s/$current_value/$new_value/g" > abc.txt

It works perfectly and gives me the O/P as

Code:

Hello , My name is Ankit
I am learning shell script

But i want to ignore case sensitiveness , again by example of a file , abc.txt , now i have mohit written in lower case

Code:

Hello , My name is mohit
I am learning shell script

Again , i have some variables in my script that have following values

Code:

line_number=1
current_value=MOHIT
new_value=Ankit

code :

Code:

cat abc.txt | sed -e $line_number"s/$current_value/$new_value/g" > abc.txt

This is not working , please suggest.

Note: I have tried using I at the end, its working for other linux distributions , but not on my AIX systems.

code:

Code:

cat abc.txt | sed -e $line_number"s/$current_value/$new_value/gI" > abc.txt

AIX :- OS version
7100-03-02-1412

Thanks in advance!

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