Go Auto-Recompile and Reload Server on file change

Question

I know AppEngine does this, but I\'m not coding for it.

I tried using Guard from Ruby world, to listen on changes on .go files, and execut

Answer 1

After scrolling through the internet in search of a simple solution that was using standard linux tools (inotify & bash), I ended up creating this simple bash script that does the job.

I tested it in a container running golang:1.12 and using go run . to serve files. read the script before using it, as it kills the go run processes depending on a folder name, and if there are conflicts with other processes that you run it might kill them.

#!/bin/bash

go run . &
while inotifywait --exclude .swp -e modify -r . ;
do
    # find PID of the file generated by `go run .` to kill it. make sure the grep does not match other processes running on the system
    IDS=$(ps ax | grep "/tmp/go-build" | grep "b001/exe/main" | grep -v "grep" | awk '{print $1}')
    if [ ! -z "$IDS" ]
    then
        kill $IDS;
    fi
    go run . &
done;