diff --git a/crates/libp9cpu/src/client.rs b/crates/libp9cpu/src/client.rs
index e7e8051..558f87e 100644
--- a/crates/libp9cpu/src/client.rs
+++ b/crates/libp9cpu/src/client.rs
@@ -1,5 +1,5 @@
 use crate::cmd;
-use crate::cmd::CommandReq;
+use crate::cmd::Cmd;
 use crate::rpc;
 use async_trait::async_trait;
 use futures::{Future, Stream, StreamExt};
@@ -32,7 +32,7 @@ pub trait ClientInnerT {
     /// Starts the command on the remote machine. This method should return as
     /// long as the command is spawned successfully. To obtained the command
     /// return code, call [wait()](Self::wait).
-    async fn start(&self, sid: Self::SessionId, command: CommandReq) -> Result<(), Self::Error>;
+    async fn start(&self, sid: Self::SessionId, command: Cmd) -> Result<(), Self::Error>;
 
     type EmptyFuture: Future<Output = Result<(), Self::Error>> + Send + 'static;
 
@@ -184,12 +184,12 @@ where
         if self.session_info.is_some() {
             return Err(ClientError::AlreadyStarted)?;
         }
-        let tty = command.req.tty;
+        let tty = command.cmd.tty;
         let sid = self.inner.dial().await?;
-        if command.req.ninep {
+        if command.cmd.ninep {
             unimplemented!("local 9p server is not implemented yet.")
         }
-        self.inner.start(sid.clone(), command.req).await?;
+        self.inner.start(sid.clone(), command.cmd).await?;
 
         let (stop_tx, stop_rx) = broadcast::channel(1);
 
diff --git a/crates/libp9cpu/src/cmd.proto b/crates/libp9cpu/src/cmd.proto
index c302e38..b53f579 100644
--- a/crates/libp9cpu/src/cmd.proto
+++ b/crates/libp9cpu/src/cmd.proto
@@ -15,7 +15,7 @@ message EnvVar {
   bytes val = 2;
 }
 
-message CommandReq {
+message Cmd {
   string program = 1;
   repeated string args = 2;
   repeated EnvVar envs = 3;
diff --git a/crates/libp9cpu/src/cmd.rs b/crates/libp9cpu/src/cmd.rs
index e09a4d8..98f2881 100644
--- a/crates/libp9cpu/src/cmd.rs
+++ b/crates/libp9cpu/src/cmd.rs
@@ -43,13 +43,13 @@ impl TryFrom<&str> for FsTab {
 }
 
 pub struct Command {
-    pub(crate) req: CommandReq,
+    pub(crate) cmd: Cmd,
 }
 
 impl Command {
     pub fn new(program: String) -> Self {
         Self {
-            req: CommandReq {
+            cmd: Cmd {
                 program,
                 ..Default::default()
             },
@@ -57,7 +57,7 @@ impl Command {
     }
 
     pub fn args(&mut self, args: impl IntoIterator<Item = String>) -> &mut Self {
-        self.req.args.extend(args);
+        self.cmd.args.extend(args);
         self
     }
 
@@ -67,7 +67,7 @@ impl Command {
         K: Into<Vec<u8>>,
         V: Into<Vec<u8>>,
     {
-        self.req.envs.extend(vars.into_iter().map(|(k, v)| EnvVar {
+        self.cmd.envs.extend(vars.into_iter().map(|(k, v)| EnvVar {
             key: k.into(),
             val: v.into(),
         }));
@@ -75,22 +75,22 @@ impl Command {
     }
 
     pub fn fstab(&mut self, tab: impl IntoIterator<Item = FsTab>) -> &mut Self {
-        self.req.fstab.extend(tab);
+        self.cmd.fstab.extend(tab);
         self
     }
 
     pub fn ninep(&mut self, enable: bool) -> &mut Self {
-        self.req.ninep = enable;
+        self.cmd.ninep = enable;
         self
     }
 
     pub fn tty(&mut self, enable: bool) -> &mut Self {
-        self.req.tty = enable;
+        self.cmd.tty = enable;
         self
     }
 
     pub fn tmp_mnt(&mut self, tmp_mnt: String) -> &mut Self {
-        self.req.tmp_mnt = tmp_mnt;
+        self.cmd.tmp_mnt = tmp_mnt;
         self
     }
 }
diff --git a/crates/libp9cpu/src/rpc/p9cpu.proto b/crates/libp9cpu/src/rpc/p9cpu.proto
index c31b539..df78543 100644
--- a/crates/libp9cpu/src/rpc/p9cpu.proto
+++ b/crates/libp9cpu/src/rpc/p9cpu.proto
@@ -5,7 +5,7 @@ import "cmd.proto";
 
 message StartRequest {
     bytes id = 1;
-    cmd.CommandReq cmd = 2;
+    cmd.Cmd cmd = 2;
 }
 
 message StdinRequest {
diff --git a/crates/libp9cpu/src/rpc/rpc_client.rs b/crates/libp9cpu/src/rpc/rpc_client.rs
index 64ac01e..57e9b40 100644
--- a/crates/libp9cpu/src/rpc/rpc_client.rs
+++ b/crates/libp9cpu/src/rpc/rpc_client.rs
@@ -105,7 +105,7 @@ impl crate::client::ClientInnerT for RpcClient {
     async fn start(
         &self,
         sid: Self::SessionId,
-        command: cmd::CommandReq,
+        command: cmd::Cmd,
     ) -> Result<(), Self::Error> {
         let req = rpc::StartRequest {
             id: sid.into_bytes().into(),
diff --git a/crates/libp9cpu/src/server.rs b/crates/libp9cpu/src/server.rs
index 690b346..c2bd1e8 100644
--- a/crates/libp9cpu/src/server.rs
+++ b/crates/libp9cpu/src/server.rs
@@ -26,7 +26,7 @@ impl<I> Default for Server<I> {
 }
 
 impl<I> Server<I> {
-    pub async fn start(&self, _command: cmd::CommandReq, _sid: I) -> Result<(), Error> {
+    pub async fn start(&self, _command: cmd::Cmd, _sid: I) -> Result<(), Error> {
         unimplemented!()
     }