This is the command sge_gethostbyaddr that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
sge_hostnameutils.1 - SGE Host name utilities
gethostname -
get local hostname.
gethostbyname -
get local host information for specified hostname.
gethostbyaddr -
get hostname via IP address.
getservbyname -
get configured port number of service
SYNTAX
gethostname [-help|-name|-aname|-all]
gethostbyname [-help|-name|-aname|-all] <name>
gethostbyaddr [-help|-name|-aname|-all] <ip>
getservbyname [-help|-number] <service>
DESCRIPTION
gethostname and gethostbyname are used to get the local resolved host name. gethostbyaddr
is used to get the hostname of a specified IP address (dotted decimal notation).
getservbyname can be used to get the configured port number of a service (e.g. from
/etc/services).
The hostname utils are primarily used by the Sun Grid Engine installation scripts.
gethostname , gethostbyname and gethostbyaddr called without any option will print out the
hostname, all specified aliases, and the IP address of the locally resolved hostname.
Calling getservbyname without any option will print out the full service entry.
OPTIONS
-help
Prints a list of all options.
-name
This option only reports the primary name of the host.
-aname
If this option is set, the Sun Grid Engine host alias file is used for host name
resolving. It is necessary to set the environment variable SGE_ROOT and, if more than one
cell is defined, also SGE_CELL.
This option will print out the Sun Grid Engine host name.
-all
By using the -all option all available host information will be printed. This information
includes the host name, the Sun Grid Engine host name, all host aliases, and the IP
address of the host.
-number
This option will print out the port number of the specified service name.
<name>
The host name for which the information is requested.
<ip>
The IP address (dotted decimal notation) for which the information is requested.
<service>
The service name for which the information is requested (e.g. ftp, sge_qmaster or
sge_execd).
EXAMPLES
The following example shows how to get the port number of the FTP service:
>getservbyname -number ftp
21
The next example shows the output of gethostname -all when the host alias file contains
this line:
gridmaster extern_name extern_name.mydomain
The local host resolving must also provide the alias name "gridmaster". Each Sun Grid
Engine host that wants to use the cluster must be able to resolve the host name
"gridmaster".
To setup an alias name, edit your /etc/hosts file or modify your NIS setup to provide the
alias for the NIS clients.
The host alias file must be readable from each host (use e.g. NFS shared file location).
>gethostname -all
Hostname: extern_name.mydomain
SGE name: gridmaster
Aliases: loghost gridmaster
Host Address(es): 192.168.143.99
ENVIRONMENTAL VARIABLES
SGE_ROOT Specifies the location of the Sun Grid Engine standard configuration files.
SGE_CELL If set, specifies the default Sun Grid Engine cell.
Use sge_gethostbyaddr online using onworks.net services