45 lines
1.1 KiB
Bash
Executable File
45 lines
1.1 KiB
Bash
Executable File
#!/bin/bash
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# there are a few different ways to resolve public-ip,
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# keep trying until we get a result
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# dig
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if [[ -n $(command -v "dig") ]]; then
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# via opendns
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address=$(dig "@resolver1.opendns.com" -4 "myip.opendns.com" "A" "+short")
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if [[ "$?" -ne "0" ]]; then
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# dig was unsuccessful
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echo "$address" 1>&2
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address=""
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fi
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fi
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# curl
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if [[ -z "$address" ]] && [[ -n $(command -v "curl") ]]; then
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# via ipinfo.io
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address=$(curl -4 --fail --silent --show-error "https://ipinfo.io/ip")
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if [[ -z "$address" ]]; then
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# via google
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address=$(curl -4 --fail --silent --show-error "https://domains.google.com/checkip")
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fi
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fi
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# wget
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if [[ -z "$address" ]] && [[ -n $(command -v "wget") ]]; then
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# via ipinfo.io
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address=$(wget -4 --quiet --output-document - "https://ipinfo.io/ip")
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if [[ -z "$address" ]]; then
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# via google
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address=$(wget -4 --quiet --output-document - "https://domains.google.com/checkip")
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fi
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fi
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if [[ -n "$address" ]]; then
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echo "$address"
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else
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echo 'Tried everything, unable to resolve IP address.' 1>&2
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fi
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