UTS_NAMESPACES(7)         (2019-11-19)          UTS_NAMESPACES(7)

          uts_namespaces - overview of Linux UTS namespaces

          UTS namespaces provide isolation of two system identifiers:
          the hostname and the NIS domain name.  These identifiers are
          set using sethostname(2) and setdomainname(2), and can be
          retrieved using uname(2), gethostname(2), and
          getdomainname(2).  Changes made to these identifiers are
          visible to all other processes in the same UTS namespace,
          but are not visible to processes in other UTS namespaces.

          When a process creates a new UTS namespace using clone(2) or
          unshare(2) with the CLONE_NEWUTS flag, the hostname and
          domain of the new UTS namespace are copied from the corre-
          sponding values in the caller's UTS namespace.

          Use of UTS namespaces requires a kernel that is configured
          with the CONFIG_UTS_NS option.

          nsenter(1), unshare(1), clone(2), getdomainname(2),
          gethostname(2), setns(2), uname(2), unshare(2),

          This page is part of release 5.10 of the Linux man-pages
          project.  A description of the project, information about
          reporting bugs, and the latest version of this page, can be
          found at https://www.kernel.org/doc/man-pages/.

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