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 have two examples:
1.
$ echo "Lorem ipsum dolor sit amet" | awk ‘{gsub(/L[^r]r/,""); print}’
em ipsum dolor sit amet
2.
$ echo "Loorem ipsum dolor sit amet" | awk ‘{gsub(/L[^r]r/,"");
print}’Loorem ipsum dolor sit amet
Why the second example does not work the same as the first?
In the first example, the record of [^r] is treated as a single character? Is it because one "o" is deleted?
L[^r]rmatchesLfollowed by any single character that isn’trfollowed byrlikeLor. To matchLooryou would wantL[^r]+r. The+quantifier means one or more characters that are notr.