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To write a message to users that have login, you can using the command write. But before that, you need to check who is login, and which terminal he is login to, use command who...
| Write a message to login users through terminal
            Submitted by sandip on Tue, 08/31/2010 - 11:21
    
     (via linux.byexamples.com) To write a message to users that have login, you can using the command write. But before that, you need to check who is login, and which terminal he is login to, use command who... | User loginRecent blog posts
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