diff --git a/codex-rs/Cargo.lock b/codex-rs/Cargo.lock
index 5b772e0dbe..6fde3e982a 100644
--- a/codex-rs/Cargo.lock
+++ b/codex-rs/Cargo.lock
@@ -2168,9 +2168,11 @@ version = "0.0.0"
 dependencies = [
  "cc",
  "clap",
+ "codex-arg0",
  "codex-core",
  "codex-protocol",
  "codex-utils-absolute-path",
+ "ctor 0.6.3",
  "landlock",
  "libc",
  "pkg-config",
diff --git a/codex-rs/linux-sandbox/Cargo.toml b/codex-rs/linux-sandbox/Cargo.toml
index 88da2d7479..7c4dbff496 100644
--- a/codex-rs/linux-sandbox/Cargo.toml
+++ b/codex-rs/linux-sandbox/Cargo.toml
@@ -28,6 +28,8 @@ serde_json = { workspace = true }
 url = { workspace = true }
 
 [target.'cfg(target_os = "linux")'.dev-dependencies]
+codex-arg0 = { workspace = true }
+ctor = { workspace = true }
 pretty_assertions = { workspace = true }
 tempfile = { workspace = true }
 tokio = { workspace = true, features = [
diff --git a/codex-rs/linux-sandbox/tests/all.rs b/codex-rs/linux-sandbox/tests/all.rs
index 7e136e4cce..05da90fbb7 100644
--- a/codex-rs/linux-sandbox/tests/all.rs
+++ b/codex-rs/linux-sandbox/tests/all.rs
@@ -1,3 +1,5 @@
+#![cfg(target_os = "linux")]
+
 // Single integration test binary that aggregates all test modules.
 // The submodules live in `tests/suite/`.
 mod suite;
diff --git a/codex-rs/linux-sandbox/tests/suite/mod.rs b/codex-rs/linux-sandbox/tests/suite/mod.rs
index 8ef44a61a4..8db365575b 100644
--- a/codex-rs/linux-sandbox/tests/suite/mod.rs
+++ b/codex-rs/linux-sandbox/tests/suite/mod.rs
@@ -1,3 +1,47 @@
 // Aggregates all former standalone integration tests as modules.
+use codex_arg0::Arg0PathEntryGuard;
+use codex_arg0::arg0_dispatch;
+use ctor::ctor;
+use tempfile::TempDir;
+
+struct TestCodexAliasesGuard {
+    _codex_home: TempDir,
+    _arg0: Arg0PathEntryGuard,
+}
+
+const CODEX_HOME_ENV_VAR: &str = "CODEX_HOME";
+
+// This code runs before any other tests are run.
+// It allows the test binary to behave like codex-linux-sandbox based on arg0.
+#[ctor]
+pub static CODEX_ALIASES_TEMP_DIR: TestCodexAliasesGuard = unsafe {
+    #[allow(clippy::unwrap_used)]
+    let codex_home = tempfile::Builder::new()
+        .prefix("codex-linux-sandbox-tests")
+        .tempdir()
+        .unwrap();
+    let previous_codex_home = std::env::var_os(CODEX_HOME_ENV_VAR);
+
+    // Safety: #[ctor] runs before test threads start.
+    unsafe {
+        std::env::set_var(CODEX_HOME_ENV_VAR, codex_home.path());
+    }
+    #[allow(clippy::unwrap_used)]
+    let arg0 = arg0_dispatch().unwrap();
+    match previous_codex_home.as_ref() {
+        Some(value) => unsafe {
+            std::env::set_var(CODEX_HOME_ENV_VAR, value);
+        },
+        None => unsafe {
+            std::env::remove_var(CODEX_HOME_ENV_VAR);
+        },
+    }
+
+    TestCodexAliasesGuard {
+        _codex_home: codex_home,
+        _arg0: arg0,
+    }
+};
+
 mod landlock;
 mod managed_proxy;