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1.Using su commandNot required if root password is set at the time of installationIf you set a root password, set it as followsLog in as a general user2. Modernize the systemTo modernize the system, enter the following command3.locate InstallThe find command is used to search for a specific file on the entire Linux system, but find's options are somewhat confusing.In such cases, it is useful to have the locate command available, which can extract all files with a given filename