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Top Forums UNIX for Dummies Questions & Answers return IP address Post 302248918 by drl on Monday 20th of October 2008 06:14:47 AM
Old 10-20-2008
Hi.

Some versions of cut allow this:
Code:
#!/bin/bash -

# @(#) s1       Demonstrate sub-string extraction, character replacement.

echo
echo "(Versions displayed with local utility \"version\")"
version >/dev/null 2>&1 && version "=o" $(_eat $0 $1) cut sed
set -o nounset

echo
echo " Results:"
echo "192.29.0.131" |
cut -d"." -f3- |
sed -e 's/\./_/;s/^/_/'

exit 0

Producing:
Code:
% ./s1

(Versions displayed with local utility "version")
Linux 2.6.11-x1
GNU bash 2.05b.0
cut (coreutils) 5.2.1
GNU sed version 4.1.2

 Results:
_0_131

The GNU and Solaris cut seem to accept this ... cheers, drl
 

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LEARN ABOUT NETBSD

ipw

IPW(4)							   BSD Kernel Interfaces Manual 						    IPW(4)

NAME

     ipw -- Intel PRO/Wireless 2100 IEEE 802.11 driver

SYNOPSIS

     ipw* at pci? dev ? function ?

DESCRIPTION

     The ipw driver provides support for the Intel PRO/Wireless 2100 MiniPCI network adapter.

     The Intel firmware requires acceptance of the End User License Agreement.	The full license text can be found in /lib-
     data/firmware/if_ipw/LICENSE.  The license is agreed to by setting the sysctl variable hw.ipw.accept_eula to 1.

     By default, the ipw driver configures the adapter for BSS operation (aka infrastructure mode).  This mode requires the use of an access
     point.

     For more information on configuring this device, see ifconfig(8).

EXAMPLES

     Join an existing BSS network (i.e.: connect to an access point):

	   ifconfig ipw0 inet 192.168.0.20 netmask 0xffffff00

     Join a specific BSS network with network name ``my_net'':

	   ifconfig ipw0 inet 192.168.0.20 netmask 0xffffff00 nwid my_net

     Join a specific BSS network with 64 bits WEP encryption:

	   ifconfig ipw0 inet 192.168.0.20 netmask 0xffffff00 nwid my_net 
		   nwkey 0x1234567890

     Join a specific BSS network with 128bits WEP encryption:

	   ifconfig ipw0 inet 192.168.0.20 netmask 0xffffff00 nwid my_net 
		   nwkey 0x01020304050607080910111213

DIAGNOSTICS

     ipw%d: device timeout  The driver will reset the hardware.  This should not happen.

SEE ALSO

     an(4), awi(4), pci(4), wi(4), ifconfig(8), ipwctl(8)

     The IPW Web Page, http://damien.bergamini.free.fr/ipw/.

AUTHORS

     The ipw driver and this man page were written by Damien Bergamini <damien.bergamini@free.fr>.

BSD
								 November 7, 2008							       BSD
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