gotosocial/vendor/github.com/rs/xid/hostid_linux.go

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// +build linux
package xid
import "io/ioutil"
func readPlatformMachineID() (string, error) {
b, err := ioutil.ReadFile("/etc/machine-id")
if err != nil || len(b) == 0 {
b, err = ioutil.ReadFile("/sys/class/dmi/id/product_uuid")
}
return string(b), err
}