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landing/docs/Linux-Commands/Working-With-Files/001-the-ls-command.md

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+# The `ls` command
+
+The `ls` command lets you see the files and directories inside a specific directory *(current working directory by default)*.
+It normally lists the files and directories in ascending alphabetical order.
+
+### Examples:
+
+1. To show the files inside your current working directory:
+
+```
+ls
+```
+
+2. To show the files and directory inside a specific Directory:
+
+```
+ls {Directory_Path}
+```
+
+### Syntax:
+
+```
+ls [-OPTION] [DIRECTORY_PATH]
+```
+
+### Interactive training
+
+In this interactive tutorial, you will learn the different ways to use the `ls` command:
+
+[The ls command by Tony](https://devdojo.com/tnylea/ls-command)
+
+### Additional Flags and their Functionalities:
+
+|**Short Flag**   |**Long Flag**   |**Description**   |
+|:---|:---|:---|
+|`-l`|<center>-</center>|Show results in long format|
+|`-S`|<center>-</center>|Sort results by file size|
+|`-t`|<center>-</center>|Sort results by modification time|
+|`-r`|`--reverse`|Show files and directories in reverse order *(descending alphabetical order)*|
+|`-a`|`--all`|Show all files, including hidden files *(file names which begin with a period `.`)*|
+|`-la`|<center>-</center>|Show long format files and directories including hidden files|
+|`-lh`|<center>-</center>|list long format files and directories with readable size|
+|`-A`|`--almost-all`|Shows all like `-a` but without showing `.`(current working directory) and `..` (parent directory)|
+|`-d`|`--directory`|Instead of listing the files and directories inside the directory, it shows any information about the directory itself, it can be used with `-l` to show long formatted information|
+|`-F`|`--classify`|Appends an indicator character to the end of each listed name, as an example: `/` character is appended after each directory name listed|
+|`-h`|`--human-readable`|like `-l` but displays file size in human-readable unit not in bytes|
+
+
+### Setting Persistent Options:
+
+
+Customizing command behavior in Linux is easy using the `alias` command. To make these changes permanent, follow these steps:
+
+1. **Create the Alias**: Define your alias with the desired options. For example, to enhance the `ls` command:
+
+    ```bash
+    alias ls="ls --color=auto -lh"
+    ```
+
+2. **Persistence**: This alias is effective only for the current session. To make it permanent, add the alias to your shell's configuration file:
+
+    - **Bash**: Append the alias to `~/.bashrc`:
+
+        ```bash
+        echo 'alias ls="ls --color=auto -lh"' >> ~/.bashrc
+        source ~/.bashrc
+        ```
+
+3. **Verification**: Open a new terminal session, and the `ls` command will display files as configured.
+
+