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#!/bin/bash
main () {
cd "$TMPDIR"
set +e
LIST=$(curl -sSL 'https://tunnelbroker.net/status.php' |
grep -Eo 'title="[0-9.]+"' |
grep -Eo '([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})')
set -e
for addr in $LIST
do
ping -qnc4 "$addr" > "$addr" &
done
set +e # ignore non-zero exit code from ping command
for addr in $LIST
do
wait
done
set -e
for addr in $LIST
do
avg=$(echo $(cat "$addr" |
grep -Eo 'rtt min/avg/max/mdev = [0-9.]+/[0-9.]+/[0-9.]+/[0-9.]+' |
grep -Eo '[0-9.]+') |
awk '{print $2}')
if [ -z "$avg" ]; then
avg="inf"
fi
echo "$avg $addr"
done | sort -g
}
set -e
TMPDIR=$(mktemp -d)
set +e
main & wait
ec="$?"
rm -rf "$TMPDIR"
exit "$ec"
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