FTPで誤ってCentOS7から削除したディレクトリを戻す方法について

R

re9

質問経緯
CentOS7からFTP(FileZilla)で、削除予定ではなかったディレクトリを削除してしまいました。
上書きしてしまったので今回の復活は諦めたのですが、今後のために教えて下さい。

Q1.FTPで削除 ＝＝ CentOSコマンドで削除 ですか？
FTPで削除した場合にも、FTP経由でCentOSコマンドで削除したことになるので、対処方法としては同じですか？

Q2.「telinitコマンド」「extundelete」「TestDisk」の違いは？
検索したら上記 3 つが見つかったのですが、それぞれどう違うのですか？
 

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Plants near bonsai

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Few weeks after using a fertiliser, couple of plants started to grow near the tree. Can someone recognise what kind of plants they are? Should I remove them?

Thanks enter image description here

Oak sapling in pot is not branching

  • Thomas Vandeputte
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I moved a small oak sapling to an indoor pot last year and intend to keep it as a bonsai project, the tree seems generally healthy and had one growth this season allready (it didnt lose all its leaves in winter though) (as you can see in the picture). I allready repotted it from a smaller container once and removed some of the roots and the main root when doing that (in hindsight I am not sure that was the best thing to do).

I am wondering if i can do something to make it branch out, as the tree is currently just growing vertically. Any care tips are also very welcome!

Thanks a lot, Thomas

the oak is currently about 35cm ((14inch) and is on a southwest facing windowsill

Bug in reputation league ranking

While checking the lower end of the reputation league on Worldbuilding, I think I have found a bug in the ranked positions:

enter image description here

I would expect a 400 to come after 399.

This is the link to the reputation league page

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Here's a productivity-enhancing path that seems to me sensible: in whatever world I am entering, get chatGPT to generate a simple "Hello world" example, complete with config files as needed. Then expand upon the example to build what I need, dealing with errors as they arise. But are all questions that arise out of this path to be excluded from this forum, because chatGPT provided the “hello world” code? If so, it seems to me throwing out the baby with the bathwater.

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PLS-00103: Encountered the symbol ";" when expecting one of the following:

el error surge al poner uno o ambos valores como nulos. Si cambio las variables num1 y num2 para una/ambas seren null y la otra un número no me salen errores.

Code: 
DECLARE
 num1 number := &dame_un_numero;
 num2 number := &dame_otro_numero;
BEGIN
 IF num1 IS NULL AND num2 IS NULL THEN
  num1 := -5;
  num2 := 5;
 ELSIF num1 IS NULL THEN
  num1 := -5;
 ELSIF num2 IS NULL THEN
  num2 := -5;
 END IF;

 FOR i IN REVERSE num1..num2 LOOP
  DBMS_OUTPUT.PUT(i || ' ');
 END LOOP;
 DBMS_OUTPUT.PUT_LINE(' ');
END;

También intenté declarar la variable dentro del begin y el error sigue saliendo:

Code: 
DECLARE
 num1 number;
 num2 number;
BEGIN
 num1 := &dame_un_numero;
 num2 := &dame_otro_numero;

--RESTO DEL CODIGO
END;

Y así no salen errores:

Code: 
DECLARE
 num1 number := NULL;
 num2 number := 10;
BEGIN

--RESTO DEL CODIGO

END;

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