Merge pull request #197 from sponkurtus2/add_linux_category_for_rust

Added Rust category and a snippet

Author: Mathys-Gasnier

snippets/rust/linux/get-desktop-enviroment.md

@@ -0,0 +1,44 @@
+---
+title: Get Desktop Enviroment
+description: Get the Desktop Enviroment that the user is currently using.
+author: sponkurtus2 
+tags: linux,file 
+---
+
+```rust
+fn get_desktop_env() -> String {
+    // Return empty string if no X display is available
+    if env::var("DISPLAY").is_err() {
+        return String::new();
+    }
+
+    // Check common desktop environment variables.
+    for env_var in &[
+        "XDG_SESSION_DESKTOP",
+        "XDG_CURRENT_DESKTOP",
+        "DESKTOP_SESSION",
+    ] {
+        if let Ok(de) = env::var(env_var) {
+            return de;
+        }
+    }
+
+    // As fallback, try to get desktop name from last word of last line in .xinitrc
+    let path = format!("{}/.xinitrc", env::var("HOME").unwrap_or_default());
+    if let Ok(mut file) = File::open(&path) {
+        let mut buf = String::new();
+        if file.read_to_string(&mut buf).is_ok() {
+            if let Some(last_line) = buf.lines().last() {
+                let last_word = last_line.split(' ').last().unwrap_or("");
+                return last_word.to_string();
+            }
+        }
+    }
+
+    // Return "N/A" if no desktop environment could be detected
+    String::from("N/A")
+}
+
+// Usage:
+get_desktop_env(); // Returns: the desktop enviroment that the user actually has e.g. i3.
+```