Exits with exec syscall "errno" (if available)

Cargo.toml

@@ -2,7 +2,7 @@
 name = "delayr"
 version = "0.1.0"
 authors = ["Samuel FORESTIER <dev+delayr@samuel.domains>"]
-description = "Rust UNIX system tool that sleeps a random duration before executing another program"
+description = "A Rust UNIX system tool that randomly delays another program execution"
 edition = "2021"
 homepage = "https://git.forestier.app/HorlogekSkynet/delayr"
 license = "MIT"

README.md

@@ -1,6 +1,6 @@
 # delayr
 
-> Rust UNIX system tool that sleeps a random duration before executing another program
+> A Rust UNIX system tool that randomly delays another program execution
 
 ## Build
 

src/main.rs

@@ -82,5 +82,10 @@ fn main() {
         .env_remove(DEFAULT_WRITE_STYLE_ENV)
         .exec();
     error!("Error while executing {:?}: {}", args.arguments, error);
-    process::exit(1);
+
+    process::exit(if let Some(raw_os_error) = error.raw_os_error() {
+        raw_os_error
+    } else {
+        1
+    });
 }