The regular expression a? is equivalent to: 1 year agoby Linux Questions The regular expression a? is equivalent to: › Category: Introduction to Linux I › Author "LinuxQuestions" › The regular expression a? is equivalent to: Vote Up 0 Vote Down Linux Questions Staff asked 1 year ago The regular expression a? is equivalent to: a{0,} a{0,1} a{1,} a{1} Please login or Register to submit your answer Username or Email Address Password Remember Me FacebookXGoogle+PinterestLinkedIn