Communicating Homework

Communicating Homework - Date: 2/17/2003 Course: Unix...

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Date: 2/17/2003 Course: COMMUNICATING BETWEEN MACHINES: HOMEWORK Answer these questions after doing Lecture 3 and reading Chapter 3: 1. Why doesn't % ping sunlab1-1 work? Because the ping command is located in another folder. You should use the whereis command to see where is located at. 2. Where is ping? It is located in the usr/bin/ or usr/etc/ folder. 3. If several users are all logged into one system, how can you find out who, exactly, is currently logged in? You can find out using the who, w or finger command to see what users are using what stations and even what application they are running. 4. Assume several users are all logged into one system. How can you find out if anyone is using pico right now? You can use the w command. 5. You and your friend Mary (f2558), who works at sunlab1-25, communicate with each other at around noon each day during your lunch breaks. a. What would you do to start up a talk session? First, you need to know the user ID of the person you want to
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Communicating Homework - Date: 2/17/2003 Course: Unix...

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