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Regular Expression - Switch Entire String

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# 1  
Old 11-05-2014
Scissors Regular Expression - Switch Entire String
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:
Code:
$string = "ABC ABCDEF ABC ABCDEF ABC";
Something like - $string =~ s/ABC/XYZ/g;

->Desired:
Code:
$string = "XYZ ABCDEF XYZ ABCDEF XYZ";

->NOT:
Code:
$string = "XYZ XYZDEF XYZ XYZDEF XYZ";

Last edited by Don Cragun; 11-05-2014 at 02:40 PM.. Reason: Add CODE tags.
# 2  
Old 11-05-2014
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  
Old 11-05-2014
This is perl.
Quick and dirty - use word boundaries!
Code:
$string =~ s/\bABC\b/XYZ/g;

# 4  
Old 11-05-2014
Thank you. That solution works great. SmilieSmilie
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