Easy way to get local IP address Post: 90726

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Top Forums Shell Programming and Scripting Easy way to get local IP address Post 90726 by Perderabo on Saturday 26th of November 2005 05:26:29 PM

11-26-2005

Administrator Emeritus

I don't have access to a CentOS4.1 distro of Linux (never even heard of it), but are you sure that "ifconfig -a" requires root? It certainly works for me on RedHat. I had to use /sbin/ifconfig -a since /sbin is not on my PATH.

There are many different versions of netstat and with HP-UX or Solaris, "netstat -in" would have solved your problem. With RedHat, the ip address is not displayed. (Also, while HP-UX has a ifconfig, there is no "ifconfig -a".) The first unix system I used had no netstat command. I don't know of any modern unix without a netstat command, but they do not conform to that link you posted. "netstat -D"? Let me try that on HP-UX....

Code:

$ netstat -D
netstat: illegal option -- D
Usage:  netstat [-an] [-f address-family] [system core]
        netstat [-Mnrsv] [-f address-family] [-p protocol] [system core]
        netstat [-gin] [-I interface] [interval] [system core]
        -a      show state of all sockets, including passive sockets
        -f      show statistics only for specified address family
        -g      show multicast information for network interfaces
        -i      show statistics for network interfaces
        -I      show statistics only for specified network interface
        -M      show multicast routing tables
        -Ms     show multicast routing statistics
        -n      display network addresses numerically
        -p      show statistics only for specified protocol
        -r      show routing tables
        -rv     show additional information for the routing table
        -s      show statistics for all protocols

        interval        display interface statistics continuously
        system          source of kernel symbols
        core            source of kernel data
$

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LEARN ABOUT BSD

slattach

SLATTACH(8)						      System Manager's Manual						       SLATTACH(8)

NAME

       slattach - attach serial lines as network interfaces

SYOPNSIS

       slattach ttyname [ baudrate ]

DESCRIPTION

       Slattach  is  used  to  assign  a  tty line to a network interface, and to define the network source and destination addresses. The ttyname
       parameter is a string of the form ``ttyXX'', or ``/dev/ttyXX''.	The optional baudrate parameter is used to set the speed  of  the  connec-
       tion. If not specified, the default of 9600 is used.

       Only the super-user may attach a network interface.

       To  detach  the	interface,  use `ifconfig interface-name down' after killing off the slattach process.	interface-name is the name that is
       shown by netstat(1)

EXAMPLES

	       slattach ttyh8
	       slattach /dev/tty01 4800

DIAGNOSTICS

       Messages indicating the specified interface does not exit, the requested address is unknown, the user is not privileged and tried to  alter
       an interface's configuration.

SEE ALSO

       rc(8), intro(4), netstat(1), ifconfig(8)

4.3 Berkeley Distribution					 November 17, 1996						       SLATTACH(8)

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