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// Package command provides helper functions for working with commands and processes
package command
import (
"os/exec"
"syscall"
)
// ExitStatus returns the exit code of an error if it implements the ExitCode() method
func ExitStatus(err error) (int, bool) {
if v, ok := err.(interface{ ExitCode() int }); ok {
return v.ExitCode(), true
} else if err != nil {
return -1, false
}
return 0, false
}
// KillProcessGroup sends a SIGTERM signal to the process group of the given command
func KillProcessGroup(cmd *exec.Cmd) error {
if cmd == nil {
return nil
}
if p := cmd.Process; p != nil && p.Pid > 0 {
// Send SIGTERM to the process group of cmd
_ = syscall.Kill(-p.Pid, syscall.SIGTERM)
}
// reap our child process
return cmd.Wait()
}
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