pexec

Documentation

Index

• Variables
• func ExecStream(stdin io.Reader, stdout io.WriteCloser, stderr io.WriteCloser, env []string, ...) (isCancel bool, err error)

Variables

var ErrArgsListEmpty = errors.New("args list empty")

1. one
2. two
3. three
4. Eliminate kk

Functions

func ExecStream

func ExecStream(stdin io.Reader, stdout io.WriteCloser, stderr io.WriteCloser,
	env []string, ctx context.Context, startCallback func(err error),
	args ...string) (isCancel bool, err error)

ExecStream executes a system command using the exec.Cmd type and flexible streaming. ExecStream blocks during command execution. ExecStream returns any errors occurring during launch or execution including any errors in copy threads

• args is the command followed by arguments.
• args[0] must specify an executable in the file system. env.PATH is used to resolve the command executable
• if stdin should not be used, pio.EofReader can be used
• for stdout and stderr pio has usable types:
• pio.NewWriteCloserToString
• pio.NewWriteCloserToChan
• pio.NewWriteCloserToChanLine
• pio.NewReadWriteCloserSlice
• if stdin stdout or stderr are nil, os.Stdin os.Stdout os.Stderr are used. Additional threads are used to copy data when stdin stdout or stderr are non-nil
• If env is nil, the new process uses the current process’ environment
• ctx is used to kill the process (by calling os.Process.Kill) if the context becomes done before the command completes on its own
• startCallback is invoked immediately after cmd.Exec.Start returns with its result. To not use a callback, set startCallback to nil