// +build !windows

package util

import (

"os"
"os/exec"
"syscall"

)

// ExecCommand executes the given command with $SHELL func ExecCommand(command string, setpgid bool) *exec.Cmd {

shell := os.Getenv("SHELL")
if len(shell) == 0 {
        shell = "sh"
}
return ExecCommandWith(shell, command, setpgid)

}

// ExecCommandWith executes the given command with the specified shell func ExecCommandWith(shell string, command string, setpgid bool) *exec.Cmd {

cmd := exec.Command(shell, "-c", command)
if setpgid {
        cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
}
return cmd

}

// KillCommand kills the process for the given command func KillCommand(cmd *exec.Cmd) error {

return syscall.Kill(-cmd.Process.Pid, syscall.SIGKILL)

}

// IsWindows returns true on Windows func IsWindows() bool {

return false

}

// SetNonblock executes syscall.SetNonblock on file descriptor func SetNonblock(file *os.File, nonblock bool) {

syscall.SetNonblock(int(file.Fd()), nonblock)

}

// Read executes syscall.Read on file descriptor func Read(fd int, b []byte) (int, error) {

return syscall.Read(int(fd), b)

}