add bash go back as an option to disable it on server

homeConfigs/modules/bash.nix

@@ -0,0 +1,24 @@
+{ lib, config, ...}:
+
+{
+	options.mods.bash.goback = lib.mkOption{
+		type = lib.types.bool;
+		default = true;
+		description = "go back to last cd when starting bash";
+	};
+
+	config.programs.bash.bashrcExtra = lib.mkIf config.mods.bash.goback ''
+      cd() {
+      	builtin cd "$@"
+      	echo -n "$PWD" > ~/.last_directory
+      }
+      [ -z "\$${PS1:-}" ] && return
+      
+      if [ -f ~/.last_directory ];then
+      	echo -n going to
+      	cat ~/.last_directory
+      	echo
+      	builtin cd "$(cat ~/.last_directory)"
+      fi
+	'';
+}