Only show pfetch and fortune at start of terminal session

hosts/home.nix

@@ -162,14 +162,17 @@ in
         command rm -f -- "$tempfile" 2>/dev/null
       }
 
-      pfetch
-      while true; do
-        f=`fortune`
-        if [ ''${#f} -lt 128 ]; then
-          echo "''${f}"
-          break
-        fi
+      if [ -z $TERMINAL_STARTED ] && [ -z $IN_NIX_SHELL ]; then
+        pfetch
+        while true; do
+          f=`fortune`
+          if [ ''${#f} -lt 128 ]; then
+            echo "''${f}"
+            break
+          fi
         done
+        TERMINAL_STARTED=1
+      fi
     '';
   };
 }