Files
receipt_maker/connect_recipt.sh
2026-03-07 14:39:19 +00:00

34 lines
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#!/bin/bash
set -e
# Try to find the USB Ethernet interface first
iface=$(ip -o link | awk -F': ' '/enx|enp.*u/{print $2}' | head -n 1)
# If no USB interface, fall back to eth0
if [ -z "$iface" ]; then
if ip link show eth0 &>/dev/null; then
iface="eth0"
echo "USB Ethernet not found. Using eth0."
else
echo "No suitable interface found."
exit 1
fi
else
echo "Using USB Ethernet interface: $iface"
fi
# Bring interface up before assigning IP
sudo ip link set "$iface" up
# Assign IP address if not already set
if ! ip addr show dev "$iface" | grep -q "192.168.192.10"; then
sudo ip addr add 192.168.192.10/24 dev "$iface"
fi
# Scan port 9100 on the printer IP and verify it is open
if ! nmap -p 9100 --open 192.168.192.168 | grep -q "9100/tcp open"; then
echo "Printer port 9100 is not open."
exit 1
fi