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Kindly explain the use of below mention commands in detail, 

sudo su 

&&

yum update

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These are the basic commands in Linux where each has different usage:

sudo su

This is the command that will be used for entering into the root user, It is nothing but entering as an administrator.

yum update

This will update your machine, as we are launching the instance with the base image we need to update the machine for new packages.

For more information, checkout this Devops Tutorial.

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