initial checkin

Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>

either/exec/exec.go

@@ -0,0 +1,23 @@
+package Exec
+
+import (
+	"context"
+
+	E "github.com/ibm/fp-go/either"
+	"github.com/ibm/fp-go/exec"
+	F "github.com/ibm/fp-go/function"
+	GE "github.com/ibm/fp-go/internal/exec"
+)
+
+var (
+	// Command executes a command
+	// use this version if the command does not produce any side effect, i.e. if the output is uniquely determined by by the input
+	// typically you'd rather use the IOEither version of the command
+	Command = F.Curry3(command)
+)
+
+func command(name string, args []string, in []byte) E.Either[error, exec.CommandOutput] {
+	return E.TryCatchError(func() (exec.CommandOutput, error) {
+		return GE.Exec(context.Background(), name, args, in)
+	})
+}