update make file

Makefile

@@ -1,4 +1,4 @@
-.PHONY: zsh
+.PHONY: zsh update-zsh tmux update-tmux
 
 zsh:
 	@for file in zsh/.[!.]*; do \
@@ -15,10 +15,13 @@ update-zsh:
     done && echo "zsh files updated from home directory" || echo "zsh files not updated from home directory"
 
 tmux:
-	@for file in tmux/.[!.]*; do \
-		file=$${file#tmux/}; \
-		[ -f "$$HOME/$$file" ] && mv "$$HOME/$$file" "$$HOME/$$file.bak"; \
-	done && cp -r tmux/.[!.]* ~/ && echo "tmux files copied to home directory" || echo "tmux files not copied to home directory"
+	@if [ -f "$$HOME/.tmux.conf" ]; then \
+        mv "$$HOME/.tmux.conf" "$$HOME/.tmux.conf.bak"; \
+        cp tmux/.tmux.conf "$$HOME/.tmux.conf"; \
+        echo ".tmux.conf copied to home directory"; \
+    else \
+        echo ".tmux.conf not found in home directory"; \
+    fi
 
 update-tmux:
 	@if [ -f "$$HOME/.tmux.conf" ]; then \