60 lines
1.1 KiB
Bash
Executable File
60 lines
1.1 KiB
Bash
Executable File
#!/bin/bash
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function myip()
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{
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# shellcheck disable=SC2207
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declare ipaddrs=(
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# query interwebs
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$(curl -s ifconfig.co)
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# machine's interfaces
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$(ifconfig |
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awk '/inet addr:/ {gsub("addr:","",$2); print $2; next}
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/inet6 addr:/ {gsub("/.*", "", $3); print $3; next}
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/inet(6)? / {print $2}'
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)
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)
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if (( ! ${#ipaddrs[*]} ))
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then
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echo "
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myip: error: I'm having trouble determining what our IP address is...
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Are we connected to a network?
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"
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return 1
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fi
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declare prompt="
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Please choose the IP address you want to advertise to the network:
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0) ${ipaddrs[0]} <====== this one was returned by the interwebs...
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"
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for ((i=1; i < ${#ipaddrs[*]}; i++))
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do
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prompt+=" $i) ${ipaddrs[i]}
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"
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done
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while read -r -p "${prompt}
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please enter a number [0 for default]: " which
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do
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[[ -z ${which} ]] && break;
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[[ ${which} =~ [0-9]+ ]] && (( which < ${#ipaddrs[*]} )) && break;
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echo "Ug. invalid entry \"${which}\"...
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"
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sleep 1
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done
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which=${which:-0}
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echo "${ipaddrs[which]}"
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}
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if [[ ${0} == "${BASH_SOURCE[0]}" ]]
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then
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myip "$@"
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fi
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