You are your friend troubleshoot a problem with his linux server. you enter a common linux command and discover it doesn’t work exactly as you expected. what might be the problem and what do you do next?

The syntaxis of the command.

Depending on which command you are trying to execute (there are a lot of commands), if you are getting an error or your command doesn't give you the results you expected, there might be something wrong with the syntaxis of your command, like:

you can not change you age soon as you signed up. the only way is too delete your account and use another account to sign up and put your correct age.

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