diff --git a/docs/books/admin_guide/03-commands.md b/docs/books/admin_guide/03-commands.md
index 72e450b53f..ece5431122 100644
--- a/docs/books/admin_guide/03-commands.md
+++ b/docs/books/admin_guide/03-commands.md
@@ -1,7 +1,7 @@
 ---
 title: Linux Commands
 author: Antoine Le Morvan
-contributors: Steven Spencer, Aditya Putta
+contributors: Steven Spencer, Aditya Putta, tianci li
 update: 11-08-2021
 ---
 
@@ -688,9 +688,9 @@ rm [-f] [-r] file [file] [...]
 
 | Options | Information                              |
 | ------- | ---------------------------------------- |
-| `-f`    | Do not ask for confirmation of deletion. |
-| `-i`    | Requires confirmation of deletion.       |
-| `-r`    | Recursively deletes subdirectories.      |
+| `-f`    | Do not ask whether to delete. |
+| `-i`    | Ask whether to delete.       |
+| `-r`    | Delete a directory and recursively delete its subdirectories.      |
 
 !!! Note
 
@@ -737,7 +737,7 @@ A few concrete cases will help you understand the difficulties that can arise:
 $ mv /home/rockstar/file1 /home/rockstar/file2
 ```
 
-Renames `file1` to `file2`, if `file2` already exists, it will be replaced by `file1`.
+Renames `file1` to `file2`. If `file2` already exists, replace the contents of the file with `file1`.
 
 ```bash
 $ mv /home/rockstar/file1 /home/rockstar/file2 /tmp
@@ -863,14 +863,14 @@ The commands specific to `less` are:
 
 | Command           | Action                                          |
 | ----------------- | ----------------------------------------------- |
-| `h`               | Help.                                           |
-| `Arrows`          | Move up, down a line, or to the right or left.  |
-| `Enter`           | Move down one line.                             |
-| `Space`           | Move down one page.                             |
-| `PgUp` and `PgDn` | Move up or down one page.                       |
-| `Begin` and `End` | Move to the beginning or end of a file.         |
+| <kbd>h</kbd>               | Help.                                           |
+| <kbd>↑</kbd><kbd>↓</kbd><kbd>→</kbd><kbd>←</kbd>         | Move up, down a line, or to the right or left.  |
+| <kbd>Enter</kbd>           | Move down one line.                             |
+| <kbd>Space</kbd>           | Move down one page.                             |
+| <kbd>PgUp</kbd> and <kbd>PgDn</kbd> | Move up or down one page.                       |
+| <kbd>gg</kbd> and <kbd>G</kbd> | Move to the first and last pages         |
 | `/text`           | Search for text.                                |
-| `q`               | Quit the `less` command.                        |
+| <kbd>q</kbd>               | Quit the `less` command.                        |
 
 ### `cat` command