diff --git a/cmd.go b/cmd.go
new file mode 100644
index 000000000..993a42946
--- /dev/null
+++ b/cmd.go
@@ -0,0 +1,17 @@
+package pilosa
+
+import "io"
+
+type CmdIO struct {
+	Stdin  io.Reader
+	Stdout io.Writer
+	Stderr io.Writer
+}
+
+func NewCmdIO(stdin io.Reader, stdout, stderr io.Writer) *CmdIO {
+	return &CmdIO{
+		Stdin:  stdin,
+		Stdout: stdout,
+		Stderr: stderr,
+	}
+}
diff --git a/cmd/server.go b/cmd/server.go
index 55b695cf3..5d5035ba7 100644
--- a/cmd/server.go
+++ b/cmd/server.go
@@ -17,8 +17,7 @@ import (
 var Server *server.Command
 
 func NewServeCmd(stdin io.Reader, stdout, stderr io.Writer) *cobra.Command {
-	Server = server.NewCommand()
-	Server.Stdin, Server.Stdout, Server.Stderr = stdin, stdout, stderr
+	Server = server.NewCommand(stdin, stdout, stderr)
 	serveCmd := &cobra.Command{
 		Use:   "server",
 		Short: "Run Pilosa.",
diff --git a/ctl/backup.go b/ctl/backup.go
index f0adf5766..061982aa8 100644
--- a/ctl/backup.go
+++ b/ctl/backup.go
@@ -22,17 +22,13 @@ type BackupCommand struct {
 	Path string
 
 	// Standard input/output
-	Stdin  io.Reader
-	Stdout io.Writer
-	Stderr io.Writer
+	*pilosa.CmdIO
 }
 
 // NewBackupCommand returns a new instance of BackupCommand.
 func NewBackupCommand(stdin io.Reader, stdout, stderr io.Writer) *BackupCommand {
 	return &BackupCommand{
-		Stdin:  stdin,
-		Stdout: stdout,
-		Stderr: stderr,
+		CmdIO: pilosa.NewCmdIO(stdin, stdout, stderr),
 	}
 }
 
diff --git a/ctl/bench.go b/ctl/bench.go
index 2afe7bb27..2216bace0 100644
--- a/ctl/bench.go
+++ b/ctl/bench.go
@@ -25,17 +25,13 @@ type BenchCommand struct {
 	N  int
 
 	// Standard input/output
-	Stdin  io.Reader
-	Stdout io.Writer
-	Stderr io.Writer
+	*pilosa.CmdIO
 }
 
 // NewBenchCommand returns a new instance of BenchCommand.
 func NewBenchCommand(stdin io.Reader, stdout, stderr io.Writer) *BenchCommand {
 	return &BenchCommand{
-		Stdin:  stdin,
-		Stdout: stdout,
-		Stderr: stderr,
+		CmdIO: pilosa.NewCmdIO(stdin, stdout, stderr),
 	}
 }
 
diff --git a/ctl/check.go b/ctl/check.go
index 0893790f2..40be60499 100644
--- a/ctl/check.go
+++ b/ctl/check.go
@@ -8,6 +8,7 @@ import (
 	"path/filepath"
 	"syscall"
 
+	"github.com/pilosa/pilosa"
 	"github.com/pilosa/pilosa/roaring"
 )
 
@@ -17,17 +18,13 @@ type CheckCommand struct {
 	Paths []string
 
 	// Standard input/output
-	Stdin  io.Reader
-	Stdout io.Writer
-	Stderr io.Writer
+	*pilosa.CmdIO
 }
 
 // NewCheckCommand returns a new instance of CheckCommand.
 func NewCheckCommand(stdin io.Reader, stdout, stderr io.Writer) *CheckCommand {
 	return &CheckCommand{
-		Stdin:  stdin,
-		Stdout: stdout,
-		Stderr: stderr,
+		CmdIO: pilosa.NewCmdIO(stdin, stdout, stderr),
 	}
 }
 
diff --git a/ctl/config.go b/ctl/config.go
index 998c17b47..238972b1b 100644
--- a/ctl/config.go
+++ b/ctl/config.go
@@ -5,22 +5,19 @@ import (
 	"fmt"
 	"io"
 	"strings"
+
+	"github.com/pilosa/pilosa"
 )
 
 // ConfigCommand represents a command for printing a default config.
 type ConfigCommand struct {
-	// Standard input/output
-	Stdin  io.Reader
-	Stdout io.Writer
-	Stderr io.Writer
+	*pilosa.CmdIO
 }
 
 // NewConfigCommand returns a new instance of ConfigCommand.
 func NewConfigCommand(stdin io.Reader, stdout, stderr io.Writer) *ConfigCommand {
 	return &ConfigCommand{
-		Stdin:  stdin,
-		Stdout: stdout,
-		Stderr: stderr,
+		CmdIO: pilosa.NewCmdIO(stdin, stdout, stderr),
 	}
 }
 
diff --git a/ctl/export.go b/ctl/export.go
index 4eead3239..f4b0efd0a 100644
--- a/ctl/export.go
+++ b/ctl/export.go
@@ -22,17 +22,13 @@ type ExportCommand struct {
 	Path string
 
 	// Standard input/output
-	Stdin  io.Reader
-	Stdout io.Writer
-	Stderr io.Writer
+	*pilosa.CmdIO
 }
 
 // NewExportCommand returns a new instance of ExportCommand.
 func NewExportCommand(stdin io.Reader, stdout, stderr io.Writer) *ExportCommand {
 	return &ExportCommand{
-		Stdin:  stdin,
-		Stdout: stdout,
-		Stderr: stderr,
+		CmdIO: pilosa.NewCmdIO(stdin, stdout, stderr),
 	}
 }
 
diff --git a/ctl/import.go b/ctl/import.go
index 107ddd84a..ad3281813 100644
--- a/ctl/import.go
+++ b/ctl/import.go
@@ -33,17 +33,13 @@ type ImportCommand struct {
 	Client *pilosa.Client `json:"-"`
 
 	// Standard input/output
-	Stdin  io.Reader `json:"-"`
-	Stdout io.Writer `json:"-"`
-	Stderr io.Writer `json:"-"`
+	*pilosa.CmdIO
 }
 
 // NewImportCommand returns a new instance of ImportCommand.
 func NewImportCommand(stdin io.Reader, stdout, stderr io.Writer) *ImportCommand {
 	return &ImportCommand{
-		Stdin:  stdin,
-		Stdout: stdout,
-		Stderr: stderr,
+		CmdIO: pilosa.NewCmdIO(stdin, stdout, stderr),
 
 		BufferSize: 10000000,
 	}
diff --git a/ctl/inspect.go b/ctl/inspect.go
index 86434b131..fa99ba464 100644
--- a/ctl/inspect.go
+++ b/ctl/inspect.go
@@ -10,6 +10,7 @@ import (
 	"time"
 	"unsafe"
 
+	"github.com/pilosa/pilosa"
 	"github.com/pilosa/pilosa/roaring"
 )
 
@@ -19,17 +20,13 @@ type InspectCommand struct {
 	Path string
 
 	// Standard input/output
-	Stdin  io.Reader
-	Stdout io.Writer
-	Stderr io.Writer
+	*pilosa.CmdIO
 }
 
 // NewInspectCommand returns a new instance of InspectCommand.
 func NewInspectCommand(stdin io.Reader, stdout, stderr io.Writer) *InspectCommand {
 	return &InspectCommand{
-		Stdin:  stdin,
-		Stdout: stdout,
-		Stderr: stderr,
+		CmdIO: pilosa.NewCmdIO(stdin, stdout, stderr),
 	}
 }
 
diff --git a/ctl/restore.go b/ctl/restore.go
index a650df495..c764c213c 100644
--- a/ctl/restore.go
+++ b/ctl/restore.go
@@ -22,17 +22,13 @@ type RestoreCommand struct {
 	Path string
 
 	// Standard input/output
-	Stdin  io.Reader
-	Stdout io.Writer
-	Stderr io.Writer
+	*pilosa.CmdIO
 }
 
 // NewRestoreCommand returns a new instance of RestoreCommand.
 func NewRestoreCommand(stdin io.Reader, stdout, stderr io.Writer) *RestoreCommand {
 	return &RestoreCommand{
-		Stdin:  stdin,
-		Stdout: stdout,
-		Stderr: stderr,
+		CmdIO: pilosa.NewCmdIO(stdin, stdout, stderr),
 	}
 }
 
diff --git a/ctl/sort.go b/ctl/sort.go
index 66bd16372..9d4b14277 100644
--- a/ctl/sort.go
+++ b/ctl/sort.go
@@ -21,17 +21,13 @@ type SortCommand struct {
 	Path string
 
 	// Standard input/output
-	Stdin  io.Reader
-	Stdout io.Writer
-	Stderr io.Writer
+	*pilosa.CmdIO
 }
 
 // NewSortCommand returns a new instance of SortCommand.
 func NewSortCommand(stdin io.Reader, stdout, stderr io.Writer) *SortCommand {
 	return &SortCommand{
-		Stdin:  stdin,
-		Stdout: stdout,
-		Stderr: stderr,
+		CmdIO: pilosa.NewCmdIO(stdin, stdout, stderr),
 	}
 }
 
diff --git a/server/server.go b/server/server.go
index 37ee1f7c3..cd9aa3cb0 100644
--- a/server/server.go
+++ b/server/server.go
@@ -34,9 +34,7 @@ type Command struct {
 	CPUTime    time.Duration
 
 	// Standard input/output
-	Stdin  io.Reader
-	Stdout io.Writer
-	Stderr io.Writer
+	*pilosa.CmdIO
 
 	// running will be closed once Command.Run is finished.
 	Started chan struct{}
@@ -45,14 +43,12 @@ type Command struct {
 }
 
 // NewMain returns a new instance of Main.
-func NewCommand() *Command {
+func NewCommand(stdin io.Reader, stdout, stderr io.Writer) *Command {
 	return &Command{
 		Server: pilosa.NewServer(),
 		Config: pilosa.NewConfig(),
 
-		Stdin:  os.Stdin,
-		Stdout: os.Stdout,
-		Stderr: os.Stderr,
+		CmdIO: pilosa.NewCmdIO(stdin, stdout, stderr),
 
 		Started: make(chan struct{}),
 		Done:    make(chan struct{}),
diff --git a/server/server_test.go b/server/server_test.go
index 9e907522a..56ff9c109 100644
--- a/server/server_test.go
+++ b/server/server_test.go
@@ -318,7 +318,7 @@ func NewMain() *Main {
 		panic(err)
 	}
 
-	m := &Main{Command: server.NewCommand()}
+	m := &Main{Command: server.NewCommand(os.Stdin, os.Stdout, os.Stderr)}
 	m.Config.DataDir = path
 	m.Config.Host = "localhost:0"
 	m.Command.Stdin = &m.Stdin
@@ -356,7 +356,7 @@ func (m *Main) Reopen() error {
 
 	// Create new main with the same config.
 	config := m.Config
-	m.Command = server.NewCommand()
+	m.Command = server.NewCommand(os.Stdin, os.Stdout, os.Stderr)
 	m.Config = config
 
 	// Run new program.