Added flashiso func

configs/alias_useful.fish

@@ -237,6 +237,21 @@ if test -e /usr/bin/sudo-rs
     alias sudo=sudo-rs
 end
 
+if test -e /usr/bin/dd
+    function flashiso --description "Flash an ISO to a target drive with dd"
+        if test (count $argv) -ne 2
+            echo "Usage: flashiso {ISO} {target drive}"
+            echo "Example: flashiso ubuntu-25.10-desktop-amd64.iso /dev/sdb"
+            return 1
+        end
+
+        set iso $argv[1]
+        set drive $argv[2]
+
+        sudo dd if=$iso of=$drive bs=4M status=progress oflag=sync
+    end
+end
+
 #### SOURCE of bash
 
 function smart_source