Simple script to send a file in LAN via HTTP

sendfile.sh

#!/bin/bash --
set -euo pipefail

PORT=8000

if [ "$#" -ne 1 ]; then
    echo "Usage: $0 <file_to_send>"
    exit 1
fi

# Extract only the filename
file_to_send=$(basename "$1")

# Create a temporary directory
tmpdir=$(mktemp -d)

# Clean up the temporary directory on exit
trap 'rm -rf "$tmpdir"' EXIT

# Copy the files to the temporary directory
cp "$1" "$tmpdir"

# Show the QR with the URL
my_lan_ip=$(ip a | grep inet | grep wlan | grep -Eo 'inet [0-9]+\.[0-9]+\.[0-9]+\.[0-9]+' | cut -d' ' -f2)
echo "http://$my_lan_ip:$PORT/$file_to_send" | qrencode -o - -t UTF8

# Make a Python server in that directory
python3 -m http.server -d "$tmpdir" -b "$my_lan_ip" $PORT