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Package Update using upgrade is the safest and covered in Setup Ubuntu Linux Base Server. The command to upgrade is,
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However, that's not the end of it. Sometimes this file will not be populate even though it should. For example, if you run the kernel version commands you might find, as in the below example, the updated kernel has not yet taken effect. In this case, a reboot would be required to use the updated kernel.
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uname -a Linux krypton 2.6.32-33-server #72-Ubuntu SMP Fri Jul 29 21:21:55 UTC 2011 x86_64 GNU/Linux cat /proc/version_signature Ubuntu 2.6.32-33.72-server 2.6.32.41+drm33.18 |
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