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ypdomainname

The ypdomainname directive displays the host domain name returned by the function "getdomainname," and can also be used to set a host NIS/YP domain name.

This command applies to Red Hat, RHEL, Ubuntu, CentOS, SUSE, openSUSE, Fedora.

1. Grammar

ypdomainname [-v]

2. Option list

option

description

--help

Show Help Documentation

--version

Show command version

-v

Show detailed execution process

3. Examples

Show host domain name

[root@localhost ~]# ypdomainname //Show domain name

www.weijie.com

[root@localhost ~]# ypdomainname www.david.com domain name

[root@localhost ~]# ypdomainname //Show domain name

www.david.com

nisdomainname

The nisdomainname directive displays the host domain name returned by the function "getdomainname," and can also be used to set a host NIS/YP domain name.

This command applies to Red Hat, RHEL, Ubuntu, CentOS, SUSE, openSUSE, Fedora.

1. Grammar

nisdomainname [-v]

2. Option list

option

description

--help

Show Help Documentation

--version

Show command version

-v

Show detailed execution process

3. Examples

Show host domain name

[root@localhost ~]# nisdomainname //Show domain name

www.david.com

[root@localhost ~]# nisdomainname www.weijie.com domain name

[root@localhost ~]# nisdomainname //Show domain name

www.weijie.com

domainname

The domainname directive displays the host domain name returned by the function "getdomainname," and can also be used to set a host domain name.

This command applies to Red Hat, RHEL, Ubuntu, CentOS, SUSE, openSUSE, Fedora.

1. Grammar

domainname [-v] [-F filename] [name]

2. Option list

option

description

--help

Show Help Documentation

--version

Show command version

-v

Show detailed execution process

-F | --file filename

Read host domain name from specified file

3. Examples

Show host domain name

[root@localhost ~]# domainname -v

getdomainname()=`(none)'

(none)

[root@localhost ~]# domainname www.david.com

You have new mail in /var/spool/mail/root

[root@localhost ~]# domainname

www.david.com

dnsdomainname

dnsdomainname prints the domain portion of the FQDN(fully qualified domain name). The full FQDN of the system is returned as "hostname --fqdn".

This command applies to Red Hat, RHEL, Ubuntu, CentOS, SUSE, openSUSE, Fedora.

1. Grammar

dnsdomainname [-v]

2. Option list

option

description

--help

Show Help Documentation

--version

Show command version

-v

Show detailed execution process

3. Examples

Show host domain name

[root@localhost ~]# dnsdomainname -v //-v option shows detailed execution

gethostname()=`localhost.localdomain'

Resolving `localhost.localdomain' ...

Result: h_name=`localhost'

Result: h_aliases=`localhost.localdomain'

Result: h_aliases=`localhost4'

Result: h_aliases=`localhost4.localdomain4'

Result: h_aliases=`localhost.localdomain'

Result: h_aliases=`localhost6'

Result: h_aliases=`localhost6.localdomain6'

Result: h_addr_list=`127.0.0.1'

Result: h_addr_list=`127.0.0.1'

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