Getting the IP address in unix server Post: 302211351

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Top Forums Shell Programming and Scripting Getting the IP address in unix server Post 302211351 by bakunin on Thursday 3rd of July 2008 06:20:40 AM

07-03-2008

Registered User

The problem is that different UNIX flavours use different names for the devices: what Linux or SunOs calls "eth0" is called "en0" in AIX, etc. Furthermore, you can never be sure that "en0" or "eth0" - that is: the first interface - is the one with hostname on it. In a PC this might be the case, in an LPAR in a POWER5+-Box this is most likely wrong, because "en0" is usually a service interface for booting, administration, etc.

Therefore there might be different ways to achieve your goal, all with some shortcomings. Choose your poison ;-) :

1) Issue "uname -a" and find out on which system you are running, then issue the appropriate command for the respective OS to determine the interfaces address.

1a) It might be a good idea to encapsulate this in a script function. Something like (this is just a sketch):

Code:

function get_main_ip

typeset OS=$(uname -a | cut -d' ' -f1)
typeset IP=""

case "$OS" in
     AIX)
          IP=$( ifconfig en0 | sed '<remove_unnecessary_info>' )
          ;;

     Linux)
          IP=$( ifconfig eth0 | sed '<remove_other_info>' )
          ;;

     SunOS)
          IP=$( ifconfig ent0 | sed 'whatever_is_necessary_here' )
          ;;

     *)
          print -u2 "do not know how to handle this OS".
          ;;
esac

print - "$IP"

return 0
}

2) find out the hostname (via "hostname") and find then the interface which resolves to this hostname by the above shown method. You must still determine which OS you run on.

I hope this helps.

bakunin

bakunin

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pqstat

PQSTAT(1)							      pqstat								 PQSTAT(1)

NAME

       pqstat - List jobs in NetWare print queue

SYNOPSIS

       pqstat [ -h ] [ -S server ] [ -U user name ] [ -P password
	| -n ] [ -C ] [ -B ] queue name [ job count ]

DESCRIPTION

       pqstat  lists specified number of jobs from the specified NetWare print queue available to you on some server. If you are already connected
       to some server, this one is used.

       If pqstat does not print to a tty, the decorative header line is not printed, so that you can count the jobs in print queue by doing

	 pqstat -S server queue | wc -l

       pqstat looks up the file $HOME/.nwclient to find a file server, a user name and possibly a password. See nwclient(5) for more  information.
       Please note that the access permissions of .nwclient MUST be 600, for security reasons.

OPTIONS

       queue name
	  queue name is used to specify queue. You can not use wildcards in the name.

       job count
	  job count is used to specify how much entries will be shown. Default is to show all entries.

       -S server
	  server is the name of the server you want to use.

       -U user name
	  If  the user name your NetWare administrator gave to you differs from your unix user-id, you should use -U to tell the server about your
	  NetWare user name.

       -P password
	  You may want to give the password required by the server on the command line. You should be careful about using passwords in scripts.

       -n
	  -n should be given to mount shares which do not require a password to log in.

	  If neither -n nor -P are given, pqstat prompts for a password.

       -C
	  By default, passwords are converted to uppercase before they are sent to the server, because most servers require this. You can turn off
	  this conversion by -C.

       -B
	  By default, pqstat lists the Netware name of the print job owner.  -B causes it to list the banner name instead.

SEE ALSO

       nwclient(5), nprint(1), slist(1), ncpmount(8), ncpumount(8), pqlist(1), pqrm(1)

CREDITS

       pqstat was written by David Woodhouse (dave@imladris.demon.co.uk)

pqstat								    03/03/1998								 PQSTAT(1)

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