> For the complete documentation index, see [llms.txt](https://42-guide.gitbook.io/42-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://42-guide.gitbook.io/42-guide/piscine-life/shell00/oh-yeah-mooreeee.md).

# Oh yeah, mooreeee

Objective: The goal is to create files and directories with specific permissions, sizes, and timestamps so that `ls -l` matches the given output. Here's what you need to do:

***

#### **Step 1: Understand the `ls -l` Format**

The `ls -l` output shows:

```
drwxrwxrwx 2 user group size date time name
```

* **First character**: `d` = directory, `-` = file, `l` = symbolic link.
* **Permissions**: Split into three sets (owner, group, others). Each set has `r` (read), `w` (write), `x` (execute).
* **Links**: Number of hard links.
* **Size**: In bytes.
* **Timestamp**: Modification time.

***

#### **Step 2: Create Files and Directories**

**1. test0 (Directory)**

* Command:sh

  ```bash
  mkdir test0
  chmod 551 test0  # Permissions: r-x--xr-x
  ```

**2. test1 (File)**

* Command:

  ```bash
  touch test1
  chmod 714 test1  # Permissions: rwx--xr--
  echo -n "1234" > test1  # Size = 4 bytes
  ```

**3. test2 (Directory)**

* Command:

  ```bash
  mkdir test2
  chmod 114 test2  # Permissions: --x--r--
  ```

**4. test3 (File)**

* Command:

  ```bash
  touch test3
  chmod 440 test3  # Permissions: r--r--
  echo -n "1" > test3  # Size = 1 byte
  ```

**5. test4 (File)**

* Command:

  ```bash
  touch test4
  chmod 441 test4  # Permissions: r--r--x
  echo -n "12" > test4  # Size = 2 bytes
  ```

**6. test5 (Hard Link to test3)**

* Command:

  ```bash
  ln test3 test5  # Creates a hard link (link count = 2)
  ```

**7. test6 (Symbolic Link to test0)**

* Command:

  ```bash
  ln -s test0 test6  # Creates a symbolic link
  ```

***

#### **Step 4: Set Timestamps**

Use `touch -t` to set timestamps (optional, as the problem accepts a year instead of exact time):

```bash
touch -t 202306012047 test0  # Jun 1 20:47
touch -t 202306012146 test1  # Jun 1 21:46
# Repeat for other files/dirs...
```

***

#### **Step 5: Verify Output**

Run `ls -l` to check permissions, sizes, and timestamps. Ignore `XX` values (user, group, etc.).

***

#### **Step 6: Create the Tarball**

```bash
tar -cf exo2.tar *
```

***

#### **Key Commands to Remember**

* `chmod`: Change permissions (e.g., `chmod 755 file`).
* `ln`: Create hard/symbolic links.
* `touch -t`: Set timestamps.
* `tar`: Create archives.

***

#### **Useful Resources**

* [Linux File Permissions Explained](https://linuxize.com/post/understanding-linux-file-permissions/)
* [Tar Command Guide](https://www.gnu.org/software/tar/manual/tar.html)

<br>


---

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