I want to execute Binary Files inside GoLang Program.
Here is my code:
package main
import (
"fmt"
"os/exec"
)
func main() {
output, _ := exec.Command("/home/user/Golang/bin/hello").Output()
fmt.Println(output)
}
But I get the output as: []
Thanks in advance.
I can get the output.
package main
import (
"fmt"
"os/exec"
)
func main() {
output, err := exec.Command("/Users/duguying/gopath/bin/test").Output()
if err!=nil {
fmt.Println(err.Error())
}
fmt.Println(string(output))
}
check you binary file first or binary filepath is correcting. try to print out your error message.
When I'm looking at the source of the exec.Command() it doesnt return an error but only returns Cmd which is struct in the package exe :
source
....
func Command(name string, arg ...string) *Cmd {
cmd := &Cmd{
Path: name,
Args: append([]string{name}, arg...),
}
if filepath.Base(name) == name {
if lp, err := LookPath(name); err != nil {
cmd.lookPathErr = err
} else {
cmd.Path = lp
}
}
return cmd
}
....
I have succesfully got the binary file running using this code :
package main
import (
"fmt"
"os/exec"
)
func main() {
command:= exec.Command("Your binary file path")
// set var to get the output
var out bytes.Buffer
// set the output to our variable
command.Stdout = &out
err = command.Run()
if err != nil {
log.Println(err)
}
fmt.Println(out.String())
}
This one works for me for running a binary file that will print some random string.
exec only works with full path to executable. E.g. ./test.bat doesn't work.
err = command.Run() to be like this err := command.Run() to prevent undeclared name: err