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| #!/usr/bin/env bash | |
| # Description: Resolve domains from stdin and print the IPs to stdout (with progress bar) | |
| # Example: cat domains.txt | ./resolve.sh | sort | uniq -c | sort -nr | |
| # Progress bar printing to stderr | |
| function progress_bar { | |
| progress=$(( (${1} * 100 / ${2} * 100) / 100 )) | |
| done=$(( (${progress} * 6) / 10 )) | |
| left=$((60 - $done)) | |
| # Build progressbar string lengths | |
| fill=$(printf "%${done}s") | |
| empty=$(printf "%${left}s") | |
| } | |
| # Read domains from stdin lines and resolve them | |
| domains=$(cat -) | |
| total=$(echo "$domains" | wc -l) | |
| i=1 | |
| printf "$domains" | while read domain; do | |
| # Resolve the domain | |
| ip=$(dig +short "$domain" | grep -o -E '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}') | |
| # Increment the counter and print the progress bar | |
| i=$((i + 1)) | |
| # Print if dig returned an IP | |
| [[ $ip ]] && | |
| # To stderr | |
| printf "\r\033[K" >&2 && | |
| echo -e "\e[32m$ip\e[0m" >&2 && | |
| # To stdout if not a tty or a pipe | |
| [[ ! -t 1 ]] && | |
| [[ ! -p /dev/stdout ]] && | |
| echo "$ip" | |
| # Print progress bar to stderr | |
| printf "\rProgress : [${fill// /█}${empty// /▒}] ${progress}%%" >&2 | |
| progress_bar ${i} ${total} | |
| done | |
| # Clear the progress bar | |
| printf "\r\033[K" >&2 | |
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