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Merge pull request #26678 from YuPengZTE/devSUDO

Add bash symbol for sudo

Sebastiaan van Stijn authored on 2016/09/18 20:36:13
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@@ -110,11 +110,11 @@ To create the `docker` group and add your user:
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 2. Create the `docker` group.
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-        sudo groupadd docker
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+        $ sudo groupadd docker
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 3. Add your user to `docker` group.
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-        sudo usermod -aG docker username
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+        $ sudo usermod -aG docker username
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 4. Log out and log back in.
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