who command

who command

I am a new Linux and Unix system user. How do I display who is logged on my Linux or Unix-like operating system using shell prompt?

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What is a tty under Linux / UNIX? How do I find out what tty I’m on?

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How do I see if my friends or coworkers are logged into the same Linux or BSD or UNIX (AIX, HP-UX, Apple OS X) server / workstation as I am from a command line?

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How do I print the user names of users currently logged in to the current UNIX / Linux host / server from a command prompt?

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I am a new Linux sysadmin. I am using Linux on HP server. How do I logout users from my systems? How can I forcefully logoff any user using bash shell on Linux?

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Q. How do I display who is on the UNIX / Linux system? A. On a Linux (on Solaris/FreeBSD or any other UNIX) system, many users will be sharing the same server. Users will use telnet (outdated and insecure) or ssh (secure and highly recommended) to login remotely. So if you want to find out […]

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