add files

fish/functions/fish_prompt.fish

@@ -0,0 +1,21 @@
+function fish_prompt
+        # This is a simple prompt. It looks like
+        # alfa@nobby /path/to/dir $
+        # with the path shortened and colored
+        # and a "#" instead of a "$" when run as root.
+        set -l symbol ' $ '
+        set -l color $fish_color_cwd
+        if fish_is_root_user
+                set symbol ' # '
+                set -q fish_color_cwd_root
+                and set color $fish_color_cwd_root
+        end
+    
+        echo -n $USER@$hostname
+    
+        set_color $color
+        echo -n (prompt_pwd)
+        set_color normal
+    
+        echo -n $symbol
+end