example code

[dodona2]

Proposal:

// -- compile-command: "go build main.go" --
// https://golang.org/pkg/errors/#pkg-index
package main

import (
"errors"
"fmt"
"os"
"github.com/mitchellh/go-ps"
"github.com/pborman/getopt"
)

const ()

func PS(){
ps, _ := ps.Processes()
fmt.Println(ps[0].Executable())
for pp, _ := range(ps){
fmt.Printf("%d %s\n", ps[pp].Pid(),ps[pp].Executable())
}
}

func FindProcess(key string) (int, string, error) {
pname := ""
pid := 0
err := errors.New("not found")
ps, _ := ps.Processes()
for i, _ := range ps {
if ps[i].Executable() == key {
pid = ps[i].Pid()
pname = ps[i].Executable()
err = nil
break
}
}
return pid, pname, err
} // FindProcess( key string ) ( int, string, error )

func main() {
// exit code
rc := 0
// values from command line
optHelp := getopt.BoolLong("help", 0, "Help")
getopt.Parse()
if *optHelp {
getopt.Usage()
os.Exit(rc)
}
if pid, s, err := FindProcess("emacs"); err == nil {
fmt.Printf ("Pid:%d, Pname:%s\n", pid, s)
}

fmt.Println("")
os.Exit(rc)

}

[pfeilbr]

+1 would be nice to include this in the README

[ahammond]

I'm new to golang and this really helped.

[stevenspiel]

slightly refactored (very helpful btw):

main.go:

package main

import (
	"errors"
	"fmt"
	"os"
	"github.com/mitchellh/go-ps"
	"github.com/pborman/getopt"
)

func main() {
	// exit code
	rc := 0
	// values from command line
	optHelp := getopt.BoolLong("help", 0, "Help")
	getopt.Parse()
	
	if *optHelp {
		getopt.Usage()
		os.Exit(rc)
	}
	
	if pid, s, err := FindProcess("emacs"); err == nil {
		fmt.Printf ("Pid:%d, Pname:%s\n", pid, s)
	}
	
	fmt.Println("")
	os.Exit(rc)
}

func PS() {
	ps, _ := ps.Processes()
	fmt.Println(ps[0].Executable())
	
	for pp := range ps {
		fmt.Printf("%d %s\n", ps[pp].Pid(), ps[pp].Executable())
	}
}

// FindProcess( key string ) ( int, string, error )
func FindProcess(key string) (int, string, error) {
	pname := ""
	pid := 0
	err := errors.New("not found")
	ps, _ := ps.Processes()
	
	for i, _ := range ps {
		if ps[i].Executable() == key {
			pid = ps[i].Pid()
			pname = ps[i].Executable()
			err = nil
			break
		}
	}
	return pid, pname, err
}

execution:

$ go get github.com/mitchellh/go-ps
$ go get github.com/pborman/getopt
$ go build main.go