username is not in sudoers folder

About installing the plugin of the Adobe Flash Player for Firefox,I know the file of libflashplayer.so should be copied to /usr/lib64/mozilla/plugin.By Terminal,after I input the command of sudo cp libflashplayer.so /usr/lib64/mozilla/plugins,the result is username is not in sudoers folder,this wil

install the plugin of the Adobe Flash Player

Just but unfamiliar，I am using Fedora 18 64bit .The plugin of the Adobe Flash Player should be installed to Firefox,I do not know how to do? -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Gui