Created
May 8, 2013 19:41
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shell pipeline to convert a Linux routing table to a prefix based network address CSV. depends on having ipcalc installed.
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| netstat -rn | grep UG | awk '{print $1 " " $3 " " $2 " " $8}' | \ | |
| xargs -n4 sh -c 'ipcalc -p -n $0 $1 ; echo $2 $3' | xargs -n4 | \ | |
| sed -e 's/PREFIX=\([0-9]\{1,\}\) NETWORK=\([0-9\.]\{1,\}\)/\2\/\1/; s/ /, /g ' | \ | |
| sort -V |
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