Regular Expression - Switch Entire String

Shell Programming and Scripting
1

I would like to be able to use a regular expression to find and replace entire strings, but not replace if the string is a substring in a larger string.

Example:

$string = "ABC ABCDEF ABC ABCDEF ABC";
Something like - $string =~ s/ABC/XYZ/g;

->Desired:

$string = "XYZ ABCDEF XYZ ABCDEF XYZ";

->NOT:

$string = "XYZ XYZDEF XYZ XYZDEF XYZ";
2

Is this a homework assignment?

What have you tried?

What shell and OS are you using?

What tool are you trying to use to find and replace strings?

3

This is perl.
Quick and dirty - use word boundaries!

$string =~ s/\bABC\b/XYZ/g;
4

Thank you. That solution works great. :):b: