diff --git a/Cargo.lock b/Cargo.lock
index 5c36840..6b8970c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1873,7 +1873,7 @@ dependencies = [
 
 [[package]]
 name = "tiny-encrypt"
-version = "1.8.0"
+version = "1.8.1"
 dependencies = [
  "aes-gcm-stream",
  "base64 0.22.1",
diff --git a/Cargo.toml b/Cargo.toml
index 7e6f861..e56a670 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tiny-encrypt"
-version = "1.8.0"
+version = "1.8.1"
 edition = "2021"
 license = "MIT"
 description = "A simple and tiny file encrypt tool"
diff --git a/src/cmd_decrypt.rs b/src/cmd_decrypt.rs
index 940add2..13bae2c 100644
--- a/src/cmd_decrypt.rs
+++ b/src/cmd_decrypt.rs
@@ -313,8 +313,8 @@ fn run_file_editor_and_wait_content(editor: &str, temp_file: &PathBuf, secure_ed
     command.arg(temp_file.to_str().expect("Get temp file path failed."));
     if secure_editor {
         command.arg("aes-256-gcm");
-        command.arg(&hex::encode(&temp_encryption_key_nonce.0));
-        command.arg(&hex::encode(&temp_encryption_key_nonce.1));
+        command.arg(hex::encode(&temp_encryption_key_nonce.0));
+        command.arg(hex::encode(&temp_encryption_key_nonce.1));
         if readonly { command.env("READONLY", "true"); }
     }
     debugging!("Run cmd: {:?}", command);
diff --git a/src/cmd_simple_encrypt_decrypt.rs b/src/cmd_simple_encrypt_decrypt.rs
index ffec3ff..2c4d3b3 100644
--- a/src/cmd_simple_encrypt_decrypt.rs
+++ b/src/cmd_simple_encrypt_decrypt.rs
@@ -8,6 +8,8 @@ use base64::Engine;
 use clap::Args;
 use rust_util::{debugging, opt_result, simple_error, XResult};
 use serde::Serialize;
+use std::io;
+use std::io::Write;
 use std::process::exit;
 
 // Reference: https://git.hatter.ink/hatter/tiny-encrypt-rs/issues/3
@@ -39,6 +41,10 @@ pub struct CmdSimpleEncrypt {
     /// Encrypt value in hex
     #[arg(long)]
     pub value_hex: Option<String>,
+
+    /// Direct output result value
+    #[arg(long)]
+    pub direct_output: bool,
 }
 
 #[derive(Debug, Args)]
@@ -66,6 +72,10 @@ pub struct CmdSimpleDecrypt {
     /// Decrypt result output format (plain, hex, bse64)
     #[arg(long, short = 'o')]
     pub output_format: Option<String>,
+
+    /// Direct output result value
+    #[arg(long)]
+    pub direct_output: bool,
 }
 
 impl CmdSimpleEncrypt {
@@ -121,23 +131,34 @@ impl CmdResult {
         }
     }
 
-    pub fn print_exit(&self) -> ! {
-        let result = serde_json::to_string_pretty(self).unwrap();
-        println!("{}", result);
+    pub fn print_exit(&self, direct_output_value: bool) -> ! {
+        // TODO direct_output_value
+        if direct_output_value {
+            if self.code == 0 {
+                print!("{}", self.result.as_deref().unwrap());
+            } else {
+                println!("{}", self.message.as_deref().unwrap_or("unknown error"));
+            }
+        } else {
+            let result = serde_json::to_string_pretty(self).unwrap();
+            println!("{}", result);
+        }
         exit(self.code)
     }
 }
 
 pub fn simple_encrypt(cmd_simple_encrypt: CmdSimpleEncrypt) -> XResult<()> {
+    let direct_output = cmd_simple_encrypt.direct_output;
     if let Err(inner_result_error) = inner_simple_encrypt(cmd_simple_encrypt) {
-        CmdResult::fail(-1, &format!("{}", inner_result_error)).print_exit();
+        CmdResult::fail(-1, &format!("{}", inner_result_error)).print_exit(direct_output);
     }
     Ok(())
 }
 
 pub fn simple_decrypt(cmd_simple_decrypt: CmdSimpleDecrypt) -> XResult<()> {
+    let direct_output = cmd_simple_decrypt.direct_output;
     if let Err(inner_result_error) = inner_simple_decrypt(cmd_simple_decrypt) {
-        CmdResult::fail(-1, &format!("{}", inner_result_error)).print_exit();
+        CmdResult::fail(-1, &format!("{}", inner_result_error)).print_exit(direct_output);
     }
     Ok(())
 }
@@ -171,7 +192,7 @@ pub fn inner_simple_encrypt(cmd_simple_encrypt: CmdSimpleEncrypt) -> XResult<()>
                                         URL_SAFE_NO_PAD.encode(envelops_json.as_bytes())
     );
 
-    CmdResult::success(&simple_encrypt_result).print_exit();
+    CmdResult::success(&simple_encrypt_result).print_exit(cmd_simple_encrypt.direct_output);
 }
 
 pub fn inner_simple_decrypt(cmd_simple_decrypt: CmdSimpleDecrypt) -> XResult<()> {
@@ -197,7 +218,7 @@ pub fn inner_simple_decrypt(cmd_simple_decrypt: CmdSimpleDecrypt) -> XResult<()>
     if value_parts[0] != SIMPLE_ENCRYPTION_HEADER {
         return simple_error!("bad value format: {}", value);
     }
-    let envelopes_json = opt_result!(URL_SAFE_NO_PAD.decode(&value_parts[1]), "bad value format: {}");
+    let envelopes_json = opt_result!(URL_SAFE_NO_PAD.decode(value_parts[1]), "bad value format: {}");
     let envelops: Vec<TinyEncryptEnvelop> = match serde_json::from_slice(&envelopes_json) {
         Err(_) => return simple_error!("bad value format: {}", value),
         Ok(value) => value,
@@ -216,11 +237,15 @@ pub fn inner_simple_decrypt(cmd_simple_decrypt: CmdSimpleDecrypt) -> XResult<()>
         return simple_error!("too many envelops: {:?}, len: {}", cmd_simple_decrypt.key_id, filter_envelops.len());
     }
     let value = try_decrypt_key(&config, filter_envelops[0], &pin, &slot, false)?;
+    if cmd_simple_decrypt.direct_output && output_format == "plain" {
+        io::stdout().write_all(&value).expect("unable to write to stdout");
+        exit(0);
+    }
     let value = match output_format {
         "plain" => opt_result!(String::from_utf8(value), "bad value encoding: {}"),
         "hex" => hex::encode(&value),
         "base64" => STANDARD.encode(&value),
         _ => return simple_error!("not supported output format: {}", output_format),
     };
-    CmdResult::success(&value).print_exit();
+    CmdResult::success(&value).print_exit(cmd_simple_decrypt.direct_output);
 }
\ No newline at end of file