Setting Values in Go Application at Runtime

Question

I'm writing a go application that writes values to a file.

However, I want the location of that file to be determined at runtime (i.e. not set as part of the application code).

I have create a test client for the application and I want the client to tell the application which file it should write to.

Can anyone tell me how I would go about this in Go?

Thanks,

Sean

do you mean, like a flag or environment variable? – JimB Mar 22 '16 at 17:34 — JimB, Mar 22 '16 at 17:34

score 1 · Answer 1 · edited May 23 '17 at 11:45

1

If the location is not set, you'll need to read it in some way.

You might want to read it from a command line flag passed in when running the command. The easiest way to do that is using the flag package.
You could read it from STDIN. The top answer to this question nicely explains how to do that.
You could read it from an environment variable. Check out the Environ function in the os package.

edited May 23 '17 at 11:45

Community

answered Mar 22 '16 at 17:42

bigblind

To add, you can also read it from the client as well. Just have the application expect it from a connection. – Anfernee Mar 22 '16 at 23:00

1 Answers1