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<blockquote data-quote="gatorparrots" data-source="post: 188">If you are in a DHCP situation and find your IP address frequently changing, here is an easy way to determine it:ipconfig getifaddr en0and an alternate (albeit more convoluted method):ifconfig en0 inet | grep 'inet ' | awk ' { print $2 } 'If you are behind a router and need your external IP address, issue this command:wget -q -O /dev/stdout <a href="http://checkip.dyndns.org/" target="_blank">http://checkip.dyndns.org/</a> | grep 'Current IP Address: ' | awk ' { print $4 } '(Of course, you would have to have wget installed in order for this to work.)Here is a shell script for checking your IP address and logging the results to a file:[code]#!/bin/sh#initialize variableIP=`wget -q -O /dev/stdout &lt;a href='http://checkip.dyndns.org/' target='_blank'&gt;http://checkip.dyndns.org/&lt;/a&gt; | grep 'Current IP Address: ' | awk ' { print $4 } '`# prints current IP to shellecho $IP#log itdate &gt;&gt; /private/var/log/ip.logecho $IP &gt;&gt; /private/var/log/ip.log[/code]This script could be added to your crontab in order to check your IP address periodically and log the results to a file.</blockquote>

[QUOTE="gatorparrots, post: 188"] If you are in a DHCP situation and find your IP address frequently changing, here is an easy way to determine it: [color=blue]ipconfig getifaddr en0[/color] and an alternate (albeit more convoluted method): [color=blue]ifconfig en0 inet | grep 'inet ' | awk ' { print $2 } '[/color] If you are behind a router and need your [b]external[/b] IP address, issue this command: [color=blue]wget -q -O /dev/stdout [url=http://checkip.dyndns.org/]http://checkip.dyndns.org/[/url] | grep 'Current IP Address: ' | awk ' { print $4 } '[/color] [i](Of course, you would have to have [b]wget[/b] installed in order for this to work.)[/i] Here is a shell script for checking your IP address and logging the results to a file:[code] #!/bin/sh #initialize variable IP=`wget -q -O /dev/stdout <a href='http://checkip.dyndns.org/' target='_blank'>http://checkip.dyndns.org/</a> | grep 'Current IP Address: ' | awk ' { print $4 } '` # prints current IP to shell echo $IP #log it date >> /private/var/log/ip.log echo $IP >> /private/var/log/ip.log[/code] This script could be added to your crontab in order to check your IP address periodically and log the results to a file. [/QUOTE]

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