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Full Discussion: return IP address
Top Forums UNIX for Dummies Questions & Answers return IP address Post 302248894 by shantanuo on Monday 20th of October 2008 04:31:20 AM
Old 10-20-2008
return IP address

Hi,
If my IP address is 192.29.0.131 I want output _0_131

# /sbin/ifconfig | grep "inet addr" | grep 192 | cut -d "." -f3
0

I have tried the above and I get third digit. I want forth digit as well separated by underscore.
Or is there any better approach?
 

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

NAME
ifconfig - configure a TCP/IP device SYNOPSIS
ifconfig [-I ip-device] [-h ipaddr] [-n netmask] [-iv] DESCRIPTION
Ifconfig initializes a TCP/IP device setting the IP address and/or netmask. It will report the address and netmask set. This command may be used if the system has not been configured properly yet. It is only used at boot time to set a fixed address for a system without a physical ethernet. Normally the inet task will find it out by itself from the RARP server. OPTIONS
-h The decimal TCP/IP address to set. -n The netmask to set. -i Don't set the IP address or netmask if already set. This way ifconfig cannot interfere if the numbers have been found out by RARP. -v Report IP address and netmask. This is the default action if there are no other options. SEE ALSO
hostaddr(1), rarpd(8), set_net_default(8), boot(8). AUTHOR
Kees J. Bot (kjb@cs.vu.nl) IFCONFIG(8)
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