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eric-glb/minimal_find_gateway.sh

Last active February 14, 2023 20:21
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One-liner to find the gateway from a running minimal container, using /proc/net/route
Raw
minimal_find_gateway.sh
GW=$(</proc/net/route awk 'NR==2 {print $3}' | sed -E 's/(..)/\1 /g' | if read a b c d; then printf '%d.%d.%d.%d' 0x$d 0x$c 0x$b 0x$a; fi)
Raw
minimal_find_gateway_readable.sh
#!Usr/bin/env bash
GATEWWAY=$( </proc/net/route awk 'NR==2 {print $3}' |
sed -E 's/(..)/\1 /g' |
if read a b c d; then
printf '%d.%d.%d.%d' 0x$d 0x$c 0x$b 0x$a
fi
)
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