Ironically, the command to see who is logged into the system is who. You can also see who is logged on using the wcommand.
Subscribe buttons can be found on the video pages below the videos. They can also be found on YouTube channels and various other places on the YouTube website. To see your subscriptions, you can visit your YouTube home page while logged in or by visiting your video manager page and finding the subscription option. The name that people will see when they subscribe to you is your current channel name.
Unfortunately, YouTube does not currently allow users to edit their channel with HTML. You can, however, add images and different playlists and things to feature on your channel by editing the different aspects of the channel wherever YouTube allows you to. You will see a pencil icon next to the things that can be edited when you're logged in to YouTube and on your channel page.
You can see who is logged in with the "who" or "w" commands.
No, You cannot see the last time they logged in, but, you can see if they are online and you can chat with them too.
Yes
You don't, it doesn't exist. On Youtube if you look you can see it's special effects on the surface of a Nintendo Dual Screen (DS). Oh, and if you want to see the video on Youtube, it's called Luigi V.S. Everybody.
Non-logged in users can view nearly all the same content as logged in users. So they can view your account, boards, and pins, but are unable to see your followers and who you're following.
The "who" command.
If you cllick on "my contributions" you can see what you've done while you were logged in. It won't show anything you've done while you weren't logged in.
He has to be logged on for you to be able to see him, otherwise, you wont be able to see his penguin. but maybe someone else logged on to his penguin... you cant find a penguin though.
When you see that someone has been active within 3 days on Match.com, it means that the person has logged on the site in that time frame. Sometimes when you see a person logged on and they aren't, it could be a glitch.