OT Mysqldump

Ok well kind of php.. How can I dump the sql file? I keep getting a mysqldump: no match... Here's my command: mysqldump -u root -p[password] --all-databases > backup.sql What am I doing wrong? Rici "Too much caution is bad for you. By avoiding things you fear, you may let yourself in for unhappy consequences. It is usually wiser to stand up to a scary-seeming experience and walk right into it, risking the bruises as hard knocks. You are likely to find it is not as tough as you had thought. Or you may find it plenty tough, but also discover you have what it takes to handle it." - Norman Vincent Peale