See https://github.com/porglezomp-misc/live-reloading-rs/issues/1. Requires `inotify-tools`.

live-reloading-rs-linux-watch.sh

#!/bin/bash
# see https://github.com/porglezomp-misc/live-reloading-rs/issues/1

set -e

name="libreloadable"
extension="so"
dir="./target/debug"
path="${dir}/${name}.${extension}"

cleanup() {
    rm -f "${dir}/${name}_"*;
}

trap cleanup EXIT

timestamp() {
    date +"%s";
}

run() {
    name2="${name}_$(timestamp)";
    for f in "$dir/$name".*; do cp -r "$f" "${f/$name/$name2}"; done
}

export name
export extension
export dir
export path
export -f timestamp
export -f run

inotifywait --include "$name\.$extension" -m -e CREATE "$dir" | xargs -n1 sh -c '$(run);'