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NET__GetThisHostIP.sh
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NET__GetThisHostIP.sh
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#!/bin/sh
###############################################################################################
###
### $Id: NET__GetThisHostIP.sh,v 1.5 2020/11/07 21:20:07 root Exp $
###
### Script to obtain label for INTERNET interface device on this host and the IP addess associated with it.
###
###############################################################################################
TMP=/tmp/`basename $0 ".sh" `.tmp
### Note: inxi behaviour changed with Ubuntu 20.04
### New output format:
#Network: Device-1: Qualcomm Atheros AR8121/AR8113/AR8114 Gigabit or Fast Ethernet driver: ATL1E
# IF: enp2s0 state: up speed: 1000 Mbps duplex: full mac: 00:26:18:8a:b5:7a
# IP v4: 192.168.0.11/24 type: dynamic noprefixroute scope: global
# WAN IP: 174.115.236.50
v4=1
v6=0
ipVER=v4
doINFO=0 # 0= BOTH, 1= IP, 2= INTERFACE
doIP=1
doInt=0
if [ $# -gt 0 ]
then
for opt in $*
do
case ${opt} in
--ipv4 ) v4=1 ; v6=0 ; ipVER="v4" ; shift ;;
--ipv6 ) v6=1 ; v4=0 ; ipVER="v6" ; shift ;;
--ip ) doINFO=1 ; shift ;;
--interface ) doINFO=2 ; shift ;;
* ) echo "\n\t Usage: `basename $0 ` [ --ipv4 | --ipv6 ] [ --ip | --interface ]\n\t\t (note: defaults are '--ip' and '--ipv4' )\n Bye!\n" ; exit 1 ;;
esac
done
fi
INXI=`which inxi `
if [ -n "${INXI}" ]
then
if [ "${ipVER}" = "v4" ]
then
RAW=`inxi -Nni -c0 | grep "IP ${ipVER}:" `
address=`echo "${RAW}" | cut -f2 -d\: | cut -f1 -d/ | cut -c2- | awk '{ print $1 }' | sort | uniq `
fi
if [ -d "/proc/sys/net/ip${ipVER}" -a "${ipVER}" = "v6" ]
then
### This logic to be confirmed
#address=""
RAW=`inxi -Nni -c0 | grep "IP ${ipVER}:" `
address=`echo "${RAW}" | cut -f2 -d\: | cut -f1 -d/ | cut -c2- | awk '{ print $1 }' | sort | uniq `
fi
iNetFace=`inxi -Nni -c0 | grep 'IF:' | cut -f2 -d\: | cut -c2- | awk '{ print $1 }' | sort | uniq `
case ${doINFO} in
0 ) echo "${iNetFace} ${address}" | awk '{ printf("\t %8s = %s\n", $1, $2 ) }' ;;
2 ) echo "${iNetFace}" | awk '{ printf("%s\n", $1 ) }' ;;
1 ) if [ "${address}" = "N/A" ]
then
echo "NO_ADDRESS: IP${ipVER} functionality and support is disabled on this host."
else
echo "${address}" | awk '{ printf("%s\n", $1 ) }'
fi
;;
esac
exit 0
fi
echo "Unable to locate command 'inxi' in PATH." >&2
rm -f ${TMP}
ifconfig | grep 'flags=' | grep -v 'LOOPBACK' | grep 'BROADCAST' | cut -f1 -d\: | sort | uniq >${TMP}
rm -f ${TMP}.6
ifconfig | grep 'inet6' >${TMP}.6
if [ -s ${TMP} ]
then
for iNetFace in `cat ${TMP} | sort | uniq `
do
if [ ${v4} -eq 1 ]
then
#address=`ifconfig ${iNetFace} | grep 'inet ' | awk '{print $2}' | cut -f2 -d\: `
address=`ifconfig ${iNetFace} | grep 'inet ' | grep -v 'inet6' | awk '{print $2}' | sort | uniq `
case ${doINFO} in
0 ) echo "${iNetFace} ${address}" | awk '{ printf("\t %8s = %s\n", $1, $2 ) }' ;;
1 ) echo "${address}" | awk '{ printf("%s\n", $1 ) }' ;;
2 ) echo "${iNetFace}" | awk '{ printf("%s\n", $1 ) }' ;;
esac
fi
if [ -d "/proc/sys/net/ip${ipVER}" -a ${v6} -eq 1 ]
then
if [ -s ${TMP}.6 ]
then
for address in `ifconfig ${iNetFace} | grep 'inet6' | awk '{print $2}' | sort | uniq `
do
case ${doINFO} in
0 ) echo "${iNetFace} ${address}" | awk '{ printf("\t %8s = %s\n", $1, $2 ) }' ;;
1 ) echo "${address}" | awk '{ printf("%s\n", $1 ) }' ;;
2 ) echo "${iNetFace}" | awk '{ printf("%s\n", $1 ) }' ;;
esac
done
else
if [ ${doINFO} -eq 0 ]
then
echo "NO_ADDRESS: IPv6 functionality and support is disabled on this host."
else
echo ""
fi
fi
fi
done
fi
rm -f ${TMP}*
exit 0