If you are reading the synopsis of a command from a man page, then items in square [] brackets are: 1 year agoby Linux Questions If you are reading the synopsis of a command from a man page, then items in square [] brackets are: › Category: Linux Essentials › If you are reading the synopsis of a command from a man page, then items in square [] brackets are: Vote Up 0 Vote Down Linux Questions Staff asked 1 year ago If you are reading the synopsis of a command from a man page, then items in square [] brackets are: Optional Comments Required options Required arguments Please login or Register to submit your answer Username or Email Address Password Remember Me FacebookXGoogle+PinterestLinkedIn