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Just want to ask about the significance of the users field when running "top". My system says there are 5 active users. What does that mean? If I was in work, using linux and my boss asked me to explain, what would you tell him?
If you hit 'who' or 'w' command, you can see list of logged in users (Through SSH, terminals etc). The same count you will see while running top command!
Just want to ask about the significance of the users field when running "top". My system says there are 5 active users. What does that mean? If I was in work, using linux and my boss asked me to explain, what would you tell him?
It shows that the particular process is being run on that user's terminal.
top command shows you the CPU and memory utilization of all the processes which are running on your machine with their relevant PID and the user who is running that process or the terminal where that process is running
So its obviously quite normal. But, what is a TTY? I know tty1 must be the Alt-F1 terminal. But I havent a clue what :0 means. Anyone know? Also what is the pts/1?
tty stands for Teletype. Which was a brand/type of typewriters that would connect to a computer or other Teletype through a serial connection. You would type your commands in on the keyboard and the computer/Teletype on the other side would send the responses to your printer part. ( and no you don't want to be in a room with 20 or 30 of those devices As is shown here)
As for 0: this is your primary X windows display. You can check this out with the command 'echo $DISPLAY'
pts are virtual terminals. For every xterm/gnome-term you open a pts will be assigned. Also if you login in on a remote system through ssh/telnet a pts will be assigned.
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