uname -n question

[Marksmen]

Where does uname -n get it's hostname information from. On one of our servers the results from "uname -n" and "hostname" commands are different.

 

[screwloose]

The uname command uses a structure as defined in sys/utsname.h and contains these fields and displays the name of the current operating system.:
char sysname[SYS_NMLN];
char nodename[SYS_NMLN];
char release[SYS_NMLN];
char version[SYS_NMLN];
char machine[SYS_NMLN];

and the hostname command uses unistd.h and sets or displays the name of the current host system.

 

[Yegolev]

i think what he wants to know is...

/etc/rc.net sets it like hyuh:
uname -S `hostname`

likewise with hostid.

IBM Certified -- AIX 4.3 Obfuscation

 

[screwloose]

uname -n is returned by the string in the nodename field of the structure for utsname.h. The hostname or nodename are often the same, but the gethostname subroutine allows a process to determine the internal hostname for a machine on a network.

So it is possible they are different.