diff --git a/src/cli.rs b/src/cli.rs
index c8a3af0..49065fb 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -1,34 +1,81 @@
 use std::path::PathBuf;
 
-use clap::Parser;
+use clap::{Args, Parser, Subcommand, ValueEnum};
 
 #[derive(Debug, Parser)]
 #[clap(author, version, about)]
-pub struct Args {
-    /// Path to fallback meta file.
-    #[arg(value_hint = clap::ValueHint::DirPath, required = true)]
-    pub fallback_meta: PathBuf,
+pub struct Cli {
+    #[command(subcommand)]
+    pub command: Commands,
 
-    #[clap(flatten)]
-    pub single_or_batch: SingleOrBatch,
-
-    #[arg(short, long, value_hint = clap::ValueHint::DirPath)]
-    pub single_post: Option<PathBuf>,
+    #[arg(value_hint = clap::ValueHint::DirPath, default_value = format!("./target"))]
+    target_dir: PathBuf,
 }
 
-#[derive(Debug, Parser)]
-#[group(required = true, multiple = false)]
-pub struct SingleOrBatch {
-    /// Path to a single meta to process.
-    #[arg(short = 'i', long, value_hint = clap::ValueHint::DirPath)]
-    pub single_meta: Option<PathBuf>,
+#[derive(Debug, Subcommand)]
+pub enum Commands {
+    #[command(arg_required_else_help = true)]
+    Build {
+        #[clap(flatten)]
+        lockfile: LockfileAccess,
 
-    /// Path to blog root for batch processing.
+        /// Path to fallback meta file.
+        #[arg(value_hint = clap::ValueHint::DirPath, required = true)]
+        fallback_meta: PathBuf,
+
+        /// Path to a single meta to process.
+        #[arg(short, long, value_hint = clap::ValueHint::DirPath, required = true)]
+        meta: PathBuf,
+
+        /// Path to markdown post.
+        #[arg(short, long, value_hint = clap::ValueHint::DirPath, required = true)]
+        post_md: PathBuf,
+
+        /// Path to html template.
+        #[arg(short, long, value_hint = clap::ValueHint::DirPath, required = true)]
+        template_html: PathBuf,
+    },
+
+    Update {
+        #[clap(flatten)]
+        lockfile: LockfileAccess,
+    },
+
+    #[command(arg_required_else_help = true)]
+    Refresh {
+        #[clap(flatten)]
+        lockfile: LockfileAccess,
+
+        #[arg(required = true)]
+        scope: RefreshScope,
+    },
+
+    Clean,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Subcommand, ValueEnum)]
+pub enum RefreshScope {
+    Image,
+    Post,
+    All, // Both of the above
+}
+
+#[derive(Debug, Args)]
+pub struct LockfileAccess {
+    /// Path to blog root for batch updating.
+    #[arg(
+        long,
+        value_hint = clap::ValueHint::DirPath,
+        default_value = format!("./")
+    )]
+    post_tree: PathBuf,
+
+    /// Path to lockfile for batch updating.
     #[arg(
         short,
         long,
         value_hint = clap::ValueHint::DirPath,
-        default_value = format!("../test_tree/")
+        default_value = format!("cutinews.lock")
     )]
-    pub blog_path: Option<PathBuf>,
+    lock_file: PathBuf,
 }
diff --git a/src/main.rs b/src/main.rs
index 7e4fc0f..b44919b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,12 +4,32 @@ mod convert;
 mod error;
 mod og;
 
+use std::path::PathBuf;
+
 use crate::blog::Meta;
+use crate::cli::Commands;
 
 use clap::Parser;
 
 fn main() {
-    let config = cli::Args::parse();
+    let config = cli::Cli::parse();
+
+    dbg!(&config);
+
+    match config.command {
+        Commands::Build {
+            lockfile,
+            fallback_meta,
+            meta,
+            post_md,
+            template_html,
+        } => (),
+        Commands::Update { lockfile } => (),
+        Commands::Refresh { lockfile, scope } => (),
+        Commands::Clean => (),
+    }
+
+    /*
 
     load_fb_meta(&config);
 
@@ -30,11 +50,12 @@ fn main() {
             .as_path(),
     )
     .expect("Failed to deserialize single_meta file");
+    */
 }
 
 /// Fallback Meta Setup
-fn load_fb_meta(config: &cli::Args) {
-    blog::FALLBACK_META_PATH.get_or_init(|| config.fallback_meta.to_owned());
+fn load_fb_meta(path: PathBuf) {
+    blog::FALLBACK_META_PATH.get_or_init(|| path);
 
     // Trigger OnceLock loading of fallback_meta path.
     Meta::default();