The example below assigns the boolean result of the relational expression with unlike operator to variable b1 . The expression evaluates to true if the string s1 is not " abc ".
set b1 = s1 unlike "abc";
The example below assigns the boolean result of the relational expression with unlike operator to variable b2 . The expression evaluates to true if the string s2 does not contain at least one letter or only lower case letters.
set b2 = s2 unlike "[a-z]+";