HOSTID(1) General Commands Manual HOSTID(1)NAME
hostid - set or print identifier of current host system
hostid [ identifier ]
The hostid command prints the identifier of the current host in hexadecimal. This numeric value is expected to be unique across all hosts
and is commonly set to the host's Internet address. The super-user can set the hostid by giving a hexadecimal argument or the hostname;
this is usually done in the startup script /etc/rc.local.
SEE ALSO gethostid(2), sethostid(2)4.2 Berkeley Distribution May 5, 1986 HOSTID(1)
Check Out this Related Man Page
GETHOSTID(3) Linux Programmer's Manual GETHOSTID(3)NAME
gethostid, sethostid - get or set the unique identifier of the current host
int sethostid(long hostid);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
sethostid(): _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)
gethostid() and sethostid() respectively get or set a unique 32-bit identifier for the current machine. The 32-bit identifier is intended
to be unique among all Unix systems in existence. This normally resembles the Internet address for the local machine, as returned by geth-
ostbyname(3), and thus usually never needs to be set.
The sethostid() call is restricted to the superuser.
gethostid() returns the 32-bit identifier for the current host as set by sethostid().
On success, sethostid() returns 0; on error, -1 is returned, and errno is set to indicate the error.
sethostid() can fail with the following errors:
EACCES The caller did not have permission to write to the file used to store the host ID.
EPERM The calling process's effective user or group ID is not the same as its corresponding real ID.
4.2BSD; these functions were dropped in 4.4BSD. SVr4 includes gethostid() but not sethostid(). POSIX.1-2001 specifies gethostid() but not
In the glibc implementation, the hostid is stored in the file /etc/hostid. (In glibc versions before 2.2, the file /var/adm/hostid was
In the glibc implementation, if gethostid() cannot open the file containing the host ID, then it obtains the hostname using gethostname(2),
passes that hostname to gethostbyname_r(3) in order to obtain the host's IPv4 address, and returns a value obtained by bit-twiddling the
IPv4 address. (This value may not be unique.)
It is impossible to ensure that the identifier is globally unique.
SEE ALSO hostid(1), gethostbyname(3)COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2009-01-13 GETHOSTID(3)
what are the steps to modify the hostid and ethernet address "nvram content" of Sun ultra 5 and Sun ultra 10 machines, simple steps if available would be appreciated
Ultra 5 P/N 380-0176-01
ultra 10 P/N 600-3796-02 (2 Replies)
I have to change the HostID for my SUNFire880 in lab.
Can some body help me? and give the detail procedure?
I don't think the command "mkp" can be used in SUNFire880 system.
So please help!:cool: (2 Replies)
Atmel offers a broad range of microcontrollers based on the 8051 architecture. The product line includes MCS-51® industry standard socket drop-in devices, In-System Programming capability, and small footprint 20-pin derivatives in ROMless, ROM, OTP & Flash flavors (see on-line selection table).... (2 Replies)
I would like to know that I have configure the OS & other application on the SunFire V440 server
1) If suppose no hostid base software install in that v440 server & if some problem comes in the motherboard of that server. If I remove the harddisk ( on which Solaris & other... (4 Replies)
please , I need an urgent help.
I reinstalled our server Sun X4150. What was changed:
our two disks were changed to raid1 and I installed a never version of Solaris 10 (previously the version from 12/2009 was used, now a version from 03/2010).
what I'm surprised, the... (3 Replies)
I've searched the UNIX forum looking for a simple procedure how to change\control my Solaris server hostid.
I did found few threads but all of them either have broken links to all kinds of scripts or not described simply for some UNIX beginers user like me.
Can anyone assist me?
I... (21 Replies)
I am facing a simple problem . I have a x6270 server attached to a M6000 chasis. The server is fresh i:e O/S is not installed in it.
Now the customer is asking for the HostID of that server. I have tried every possible way but i am not able to find the HostID .I went through the... (4 Replies)
We have a Sun M5000. I am now trying to boot the second system domain by using the boot disk (a mirrored boot disk actually) of the first domain (if succeed then no OS installation is needed for the second domain). I got the following errors:
SPARC Enterprise M5000 Server, using Domain... (21 Replies)
Trying to set or modify the randomly set hostID of a Solaris 10 virtual/guest machine that I installed on a Windows-XP host machine (using Virtual Box 4.1.12).
I was able to set/modify the hostname of the Solaris 10 virtual/guest machine during installation as well as via the Virtual Box... (4 Replies)
There is no /etc/hostid file.
I know that there is no relationship between with MAC address and hostid. There are a lot of scripts on the net but how can I exactly do in my case. :rolleyes: (4 Replies)
currently I'm working on migration services from physical to virtual server (RHEL 6). One form applications is binded to hostid of old server.
I put value of hostid from old server to the /etc/hostid on new server, but output of hostid command is giving nonsenses then.
#... (0 Replies)
Wrote this script earlier and said to hicksd8 that I'd post it here, it's just a quick and dirty hack to change the hostid of a global zone on a Solaris Virtual running under a hypervisor - manes and ID changed to protect the inocent.
#!/usr/bin/bash... (1 Reply)
I've been presented with an unexpected problem and I'm not sure if I can resolve it without some input from people.
I have on this site 3 license servers running Solaris, one at;
SunOS xxxxxx 5.8 Generic_117350-08 sun4u sparc SUNW,Ultra-5_10
SunOS yyyyyy 5.7... (12 Replies)