Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I want to replace a string, keeping the prefix, except when it contains a specific prefix.
For instance, any string like "(*)-bar" must be replaced with "(*)-blah" except when "(*)" matches "baz":
foo-bar => should return foo-blah
baz-bar => should remain baz-bar
The best I have so far trims the last letter of the prefix when replacing:
echo "foo-bar" | sed s/"[^(baz)]-bar"/$1-blah/
Use negative lookbehind:
Most
sedimplementations don’t have this advanced regexp feature, but it should work in more modern languages, such as perl.