I ran into this error while watching video in an edX course.
Video unavailable. This video is restricted. Try signing in with a Google Apps account.
So I try using Mozilla Firefox ESR Portable Edition. It works!
NAME top - display Linux processes SYNOPSIS top -hv|-bcHiOSs -d secs -n max -u|U user -p pid -o fld -w [cols] The traditional switches `-' and whitespace are optional. DESCRIPTION The top program provides a dynamic real-time view of a running system. It can display system summary information as well as a list of processes or threads currently being managed by the Linux kernel. The types of system summary information shown and the types, order and size of information displayed for processes are all user configurable and that configuration can be made persistent across restarts. The program provides a limited interactive interface for process manipulation ...