Hands-On System Programming with Go

Standard input

The first two things that a program may want to know are its identifier and the parent identifier, that is, PID and PPID. This is actually pretty straightforward – the os.Getpid() and os.Getppid() functions both return an integer value with both of the identifiers, as shown in the following code:

package mainimport (    "fmt"    "os")func main() {    fmt.Println("Current PID:", os.Getpid())    fmt.Println("Current Parent PID:", os.Getppid())}

The full example is available at https://play.golang.org/p/ng0m9y4LcD5.