diff --git a/Cargo.lock b/Cargo.lock
index 2da759d..2134704 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,206 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "anstream"
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+checksum = "43d5b281e737544384e969a5ccad3f1cdd24b48086a0fc1b2a5262a26b8f4f4a"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "is_terminal_polyfill",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5192cca8006f1fd4f7237516f40fa183bb07f8fbdfedaa0036de5ea9b0b45e78"
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e7644824f0aa2c7b9384579234ef10eb7efb6a0deb83f9630a49594dd9c15c2"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
+dependencies = [
+ "windows-sys",
+]
+
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+dependencies = [
+ "anstyle",
+ "once_cell_polyfill",
+ "windows-sys",
+]
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c6e6ff9dcd79cff5cd969a17a545d79e84ab086e444102a591e288a8aa3ce394"
+dependencies = [
+ "clap_builder",
+ "clap_derive",
+]
+
+[[package]]
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+version = "4.5.54"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa42cf4d2b7a41bc8f663a7cab4031ebafa1bf3875705bfaf8466dc60ab52c00"
+dependencies = [
+ "anstream",
+ "anstyle",
+ "clap_lex",
+ "strsim",
+]
+
+[[package]]
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+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
 [[package]]
 name = "fld"
 version = "0.1.0"
+dependencies = [
+ "clap",
+ "thiserror",
+]
+
+[[package]]
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+
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+ "proc-macro2",
+]
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
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+]
+
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+ "proc-macro2",
+ "quote",
+ "syn",
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+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
+[[package]]
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+checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc"
+dependencies = [
+ "windows-link",
+]
diff --git a/Cargo.toml b/Cargo.toml
index 0332875..e6a464a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,3 +4,5 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+clap = { version = "4.5.54", features = ["derive"] }
+thiserror = "2.0.18"
diff --git a/src/main.rs b/src/main.rs
index e7a11a9..0883cca 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,62 @@
-fn main() {
-    println!("Hello, world!");
+use std::path::PathBuf;
+
+use clap::{Args, Parser};
+
+use crate::mapping::Mapping;
+
+mod mapping;
+
+#[derive(Parser, Debug, PartialEq, Eq, Clone, Ord, PartialOrd, Hash)]
+#[command(version, about, long_about = None)]
+struct Cli {
+    dir: String,
+    subdirs: Option<Vec<String>>,
+    #[command(flatten)]
+    editor: Option<Editor>,
+}
+
+#[derive(Args, Debug, PartialEq, Eq, Clone, Ord, PartialOrd, Hash)]
+#[group(required = false, multiple = false)]
+struct Editor {
+    #[arg(long, short = 'c')]
+    code: bool,
+    #[arg(long, short = 'z')]
+    zed: bool,
+}
+
+fn main() -> Result<(), ()> {
+    let args = Cli::parse();
+    let mapping = match Mapping::load() {
+        Ok(val) => val,
+        Err(err) => {
+            eprintln!("Error loading mapping: {}", err);
+            return Err(());
+        }
+    };
+
+    let Some(target) = mapping.get(&args.dir) else {
+        eprintln!("{} is not a recognized directory in fld.mapping", args.dir);
+        return Err(());
+    };
+
+    println!("cd {:?}", target);
+
+    if let Some(editor) = args.editor {
+        if editor.code {
+            println!("code .");
+        } else {
+            println!("zed .");
+        };
+    };
+
+    if let Some(subdirs) = args.subdirs {
+        let paths = subdirs.into_iter().map(|x| PathBuf::from(x));
+        let mut path = PathBuf::from("./");
+        for entry in paths {
+            path.push(entry);
+        }
+        println!("cd {:?}", path);
+    };
+
+    Ok(())
 }
diff --git a/src/mapping.rs b/src/mapping.rs
new file mode 100644
index 0000000..cb62e11
--- /dev/null
+++ b/src/mapping.rs
@@ -0,0 +1,77 @@
+use std::{
+    collections::HashMap,
+    env,
+    fs::File,
+    io::Read,
+    path::{Path, PathBuf},
+    sync::LazyLock,
+};
+
+use thiserror::Error;
+
+#[derive(Debug, PartialEq, Eq, Clone)]
+pub struct Mapping {
+    internal: HashMap<String, PathBuf>,
+}
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error("IO Error: {}", .0)]
+    IO(#[from] std::io::Error),
+}
+
+static HOME: LazyLock<PathBuf> =
+    LazyLock::new(|| PathBuf::from(env::var("HOME").unwrap_or(String::from("/"))));
+
+static XDG_CONFIG_HOME: LazyLock<PathBuf> = LazyLock::new(|| {
+    env::var("XDG_CONFIG_HOME")
+        .map(|x| PathBuf::from(x))
+        .unwrap_or(HOME.clone())
+});
+
+fn create_config_file() -> Result<File, std::io::Error> {
+    let path: PathBuf = XDG_CONFIG_HOME.join(Path::new("fld.mapping"));
+    File::create(path)
+}
+
+impl Mapping {
+    pub fn load() -> Result<Mapping, Error> {
+        let path: PathBuf = XDG_CONFIG_HOME.join(Path::new("fld.mapping"));
+        let mut file = File::open(path)
+            .map(|ok| Ok(ok))
+            .unwrap_or_else(|_| create_config_file())?;
+        let mut str = String::new();
+        file.read_to_string(&mut str)?;
+
+        let pairs = str.lines();
+        let pairs = pairs.map(|x| x.split("\t").filter(|x| x != &"").collect::<Vec<_>>());
+
+        let pairs = pairs.filter_map(|x| {
+            if x.len() == 2 {
+                Some((x[0], x[1]))
+            } else {
+                None
+            }
+        });
+
+        let pairs = pairs.map(|(k, v)| {
+            (
+                String::from(k),
+                if v.starts_with("~") {
+                    PathBuf::from(String::from(HOME.to_string_lossy()) + &v[1..])
+                } else {
+                    PathBuf::from(v)
+                },
+            )
+        });
+
+        let pairs = pairs.map(|(k, v)| (k.clone(), v.canonicalize().unwrap_or(v)));
+        let pairs = pairs.collect();
+
+        Ok(Mapping { internal: pairs })
+    }
+
+    pub fn get(&self, key: &str) -> Option<&PathBuf> {
+        self.internal.get(&String::from(key))
+    }
+}