# man > uts_namespaces(7)

[_uts_namespaces_(7)](https://www.chedong.com/phpMan.php/man/utsnamespaces/7/markdown)                 Miscellaneous Information Manual                 [_uts_namespaces_(7)](https://www.chedong.com/phpMan.php/man/utsnamespaces/7/markdown)

## NAME
       uts_namespaces - overview of Linux UTS namespaces

## DESCRIPTION
       UTS  namespaces  provide isolation of two system identifiers: the hostname and the NIS domain
       name.  These identifiers are set using [**sethostname**(2)](https://www.chedong.com/phpMan.php/man/sethostname/2/markdown) and [**setdomainname**(2)](https://www.chedong.com/phpMan.php/man/setdomainname/2/markdown), and  can  be  re‐
       trieved  using [**uname**(2)](https://www.chedong.com/phpMan.php/man/uname/2/markdown), [**gethostname**(2)](https://www.chedong.com/phpMan.php/man/gethostname/2/markdown), and [**getdomainname**(2)](https://www.chedong.com/phpMan.php/man/getdomainname/2/markdown).  Changes made to these identi‐
       fiers 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)](https://www.chedong.com/phpMan.php/man/clone/2/markdown) or [**unshare**(2)](https://www.chedong.com/phpMan.php/man/unshare/2/markdown) with the **CLONE_NEWUTS**
       flag, the hostname and domain name of the new UTS namespace are copied from the corresponding
       values in the caller's UTS namespace.

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

## SEE ALSO
       [**nsenter**(1)](https://www.chedong.com/phpMan.php/man/nsenter/1/markdown),  [**unshare**(1)](https://www.chedong.com/phpMan.php/man/unshare/1/markdown),  [**clone**(2)](https://www.chedong.com/phpMan.php/man/clone/2/markdown), [**getdomainname**(2)](https://www.chedong.com/phpMan.php/man/getdomainname/2/markdown), [**gethostname**(2)](https://www.chedong.com/phpMan.php/man/gethostname/2/markdown), [**setns**(2)](https://www.chedong.com/phpMan.php/man/setns/2/markdown), [**uname**(2)](https://www.chedong.com/phpMan.php/man/uname/2/markdown), **un‐**
       [**share**(2)](https://www.chedong.com/phpMan.php/man/share/2/markdown), [**namespaces**(7)](https://www.chedong.com/phpMan.php/man/namespaces/7/markdown)

Linux man-pages 6.7                          2023-10-31                            [_uts_namespaces_(7)](https://www.chedong.com/phpMan.php/man/utsnamespaces/7/markdown)