What's the appropriate Go shebang line?

Question

I like using shebangs to run my Perl scripts directly:

#!/usr/bin/env perl

What\'s the shebang for Go programs?

Answer 1

I prefer this:

///bin/true; exec /usr/bin/env go run "$0" "$@"

This has several advantages compared to the answer by هومن جاویدپور:

• Uses exec to replace the new shell process instead of launching a grandchild process. As a result, your Go program will be a direct child process. This is more efficient and it's also important for some advanced situations, such as debugging and monitoring.

• Proper quoting of arguments. Spaces and special characters won't cause problems.

• The leading /// is more standards compliant than just //. If you only use //, you run the risk of bumping into implementation-defined behaviour. Here's a quote from http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html:

If a pathname begins with two successive / characters, the first component following the leading / characters may be interpreted in an implementation-defined manner, although more than two leading / characters shall be treated as a single / character.

I have tested this answer with bash, dash, zsh, and ksh.

Example:

///bin/true; exec /usr/bin/env go run "$0" "$@"
package main
import "fmt"
func main() {
    fmt.Println("你好！")
}