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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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rb:findipdevices [17/01/2013 15:43] andrew |
rb:findipdevices [10/10/2013 15:21] (current) |
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| Line 7: | Line 7: | ||
| #intended to loop through range of addresses and ping them to discover active devices. | #intended to loop through range of addresses and ping them to discover active devices. | ||
| #This fails of course if a device is set to ignore icmp. | #This fails of course if a device is set to ignore icmp. | ||
| + | | ||
| + | #turn on debugging, -x starts, +x stops | ||
| + | set +x | ||
| + | | ||
| | | ||
| #BASEIP=10.106.18 | #BASEIP=10.106.18 | ||
| - | BASEIP=10.28.161 | + | BASEIP=192.168.1 |
| | | ||
| | | ||
| - | DNSSERVER=10.170.2.4 | + | DNSSERVER=192.168.1.1 |
| | | ||
| - | for IPADDRESS in {20..30} | + | for IPADDRESS in {1..50} |
| do | do | ||
| #echo "Testing >${BASEIP}.${IPADDRESS}<." | #echo "Testing >${BASEIP}.${IPADDRESS}<." | ||
| | | ||
| - | #Prime Ping with a dummy ping which we ignore | + | #Prime Ping with a dummy ping which we ignore, timeout 2 seconds |
| - | ping -c1 ${BASEIP}.${IPADDRESS} 2>&1 > /dev/null | + | ping -t 2 -c1 ${BASEIP}.${IPADDRESS} 2>&1 > /dev/null |
| | | ||
| - | #Now record the result, RC0=reply, RC1=no reply | + | #Now record the result, RC0=reply, RC1=no reply, RC2=sent but no reply (mac) |
| - | ping -c1 ${BASEIP}.${IPADDRESS} 2>&1 > /dev/null | + | ping -t 2 -c1 ${BASEIP}.${IPADDRESS} 2>&1 > /dev/null |
| PINGRESULT=$? | PINGRESULT=$? | ||
| | | ||
| Line 28: | Line 32: | ||
| echo " " | echo " " | ||
| echo "Device found on ${BASEIP}.${IPADDRESS}" | echo "Device found on ${BASEIP}.${IPADDRESS}" | ||
| - | DNSNAME=`dig @${DNSSERVER} -x ${BASEIP}.${IPADDRESS} | grep -A1 ";; ANSWER" | grep -v ";;"` | + | DNSNAME=`dig @${DNSSERVER} -x ${BASEIP}.${IPADDRESS} | grep -A1 ";; ANSWER" | grep -v ";;"` 2>&1 > /dev/null |
| - | echo "DNS lookup gives >${DNSNAME}<." | + | LOOKUPRET=$? |
| | | ||
| + | if [ "${LOOKUPRET}" -eq 0 ]; then | ||
| + | echo "DNS lookup gives >${DNSNAME}<." | ||
| + | else | ||
| + | echo "No dns lookup found" | ||
| + | fi | ||
| | | ||
| elif [ "${PINGRESULT}" -eq 1 ]; then | elif [ "${PINGRESULT}" -eq 1 ]; then | ||
| + | DUMMY=1 | ||
| + | echo -n "." | ||
| + | elif [ "${PINGRESULT}" -eq 2 ]; then | ||
| + | #Mac rc=2 means ping sent ok, but no reply | ||
| DUMMY=1 | DUMMY=1 | ||
| echo -n "." | echo -n "." | ||
| Line 46: | Line 59: | ||
| | | ||
| exit 0 | exit 0 | ||
| - | |||
