diff --git a/Cargo.lock b/Cargo.lock
index 2d5d999..a410a46 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -637,7 +637,7 @@ dependencies = [
 ]
 
 [[package]]
-name = "psb-qaqc-parse"
+name = "psb-qaqc"
 version = "0.1.0"
 dependencies = [
  "anyhow",
diff --git a/Cargo.toml b/Cargo.toml
index 9a67c4b..63b6943 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-name = "psb-qaqc-parse"
+name = "psb-qaqc"
 version = "0.1.0"
 edition = "2021"
 
diff --git a/README.md b/README.md
index aa84e5f..617f229 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,11 @@ cargo build
 cargo run -- -h
 ```
 
+Build for JATHub using cross:
+```sh
+CROSS_CONTAINER_ENGINE=podman cross build --release --target armv7-unknown-linux-musleabihf
+```
+
 ### test
 ```sh
 cargo test
diff --git a/src/main.rs b/src/main.rs
index 8096328..6ed3bb6 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,26 +10,35 @@ use std::{
 
 use anyhow::{anyhow, Context, Result};
 use chrono::{DateTime, Local, Utc};
-use clap::Parser;
+use clap::{Parser, Subcommand};
 use log::{debug, error, info, trace, warn};
 use regex::Regex;
 use semver::Version;
 use serde::{Deserialize, Serialize};
 use serde_with::{serde_as, DisplayFromStr};
 
-/// Parse master jathub logfile for PS Board QAQC and write out to CSV.
+/// PS Board QAQC shift related commands.
 #[derive(Parser, Debug)]
 #[command(version, about, long_about = None)]
 struct Args {
-    /// Master log file.
-    master_log: path::PathBuf,
-    /// Output CSV file.
-    // #[arg(default_value = get_default_log_path().into_os_string())]
-    outfile: PathBuf,
+    #[command(subcommand)]
+    command: Commands,
     #[command(flatten)]
     verbose: clap_verbosity_flag::Verbosity,
 }
 
+#[derive(Subcommand, Debug)]
+pub enum Commands {
+    /// Parse master jathub logfile for PS Board QAQC and write out to CSV.
+    AddMasterLog {
+        /// Master log file.
+        master_log: path::PathBuf,
+        /// Output CSV file.
+        // #[arg(default_value = get_default_log_path().into_os_string())]
+        outfile: PathBuf,
+    },
+}
+
 /// Layer
 #[derive(Debug, PartialEq, Eq, Hash, Clone, PartialOrd, Ord)]
 enum PositionLayer {
@@ -444,55 +453,58 @@ fn main() -> Result<()> {
         "    1".split_whitespace().next().unwrap().parse::<u8>()
     );
 
-    let result = {
-        let file = File::open(args.master_log.clone())?;
-        let reader = BufReader::new(file);
-        MasterLogResult::parse_file(
-            reader,
-            args.master_log
-                .file_name()
-                .unwrap()
-                .to_str()
-                .unwrap()
-                .to_string(),
-        )?
-    };
-    debug!("{:?}", result);
+    match args.command {
+        Commands::AddMasterLog {
+            master_log,
+            outfile,
+        } => {
+            let result = {
+                let file = File::open(master_log.clone())?;
+                let reader = BufReader::new(file);
+                MasterLogResult::parse_file(
+                    reader,
+                    master_log
+                        .file_name()
+                        .unwrap()
+                        .to_str()
+                        .unwrap()
+                        .to_string(),
+                )?
+            };
+            debug!("{:?}", result);
 
-    // {
-    //     let file = File::options()
-    //         .read(true)
-    //         .open(args.outfile)?;
-    //
-    //     let mut rdr = csv::Reader::from_reader(file);
-    //     rdr.records();
-    // }
+            // {
+            //     let file = File::options()
+            //         .read(true)
+            //         .open(args.outfile)?;
+            //
+            //     let mut rdr = csv::Reader::from_reader(file);
+            //     rdr.records();
+            // }
 
-    let expanded_results = PsbQaqcResult::from_masterlogresult(result);
+            let expanded_results = PsbQaqcResult::from_masterlogresult(result);
 
-    let mut wtr = match args.outfile.exists() {
-        true => {
-            let file = File::options().read(true).append(true).open(args.outfile)?;
-            csv::WriterBuilder::new()
-                .has_headers(false)
-                .from_writer(file)
+            let mut wtr = match outfile.exists() {
+                true => {
+                    let file = File::options().read(true).append(true).open(outfile)?;
+                    csv::WriterBuilder::new()
+                        .has_headers(false)
+                        .from_writer(file)
+                }
+                false => {
+                    println!("Creating new file: {}", outfile.display());
+                    let file = File::options().create_new(true).write(true).open(outfile)?;
+                    csv::WriterBuilder::new()
+                        .has_headers(true)
+                        .from_writer(file)
+                }
+            };
+            for result in expanded_results {
+                wtr.serialize(result)?;
+            }
+            wtr.flush()?;
         }
-        false => {
-            println!("Creating new file: {}", args.outfile.display());
-            let file = File::options()
-                .create_new(true)
-                .write(true)
-                .open(args.outfile)?;
-            csv::WriterBuilder::new()
-                .has_headers(true)
-                .from_writer(file)
-        }
-    };
-    for result in expanded_results {
-        wtr.serialize(result)?;
     }
-    wtr.flush()?;
-
     Ok(())
 }
 
@@ -625,4 +637,9 @@ mod test {
             )
         );
     }
+
+    // #[test]
+    // fn parse_file() {
+    //     let logfile = r"""""";
+    // }
 }
diff --git a/tests/cli.rs b/tests/cli.rs
index 35f77b4..989dfe3 100644
--- a/tests/cli.rs
+++ b/tests/cli.rs
@@ -15,8 +15,9 @@ mod integrated_test {
         let test_out = PathBuf::new().join(&test_out_dir).join("out.csv");
 
         // 1st file
-        let mut cmd = Command::cargo_bin("psb-qaqc-parse")?;
+        let mut cmd = Command::cargo_bin("psb-qaqc")?;
         cmd.current_dir("tests")
+            .arg("add-master-log")
             .arg("./example_logs/valid/20240720_171418.log")
             .arg(test_out.as_path())
             .assert()
@@ -33,8 +34,9 @@ mod integrated_test {
         }
 
         // 2nd file
-        let mut cmd = Command::cargo_bin("psb-qaqc-parse")?;
+        let mut cmd = Command::cargo_bin("psb-qaqc")?;
         cmd.current_dir("tests")
+            .arg("add-master-log")
             .arg("./example_logs/valid/20240720_171418.log")
             .arg(test_out.as_path())
             .assert()
@@ -48,8 +50,9 @@ mod integrated_test {
         let test_out_dir = assert_fs::TempDir::new()?;
         let test_out = PathBuf::new().join(&test_out_dir).join("out.csv");
 
-        let mut cmd = Command::cargo_bin("psb-qaqc-parse")?;
+        let mut cmd = Command::cargo_bin("psb-qaqc")?;
         cmd.current_dir("tests")
+            .arg("add-master-log")
             .arg("./example_logs/valid/20240720_171419.log")
             .arg(test_out.as_path())
             .assert()