please write me a bash script to print all files of the directory with a certain suffix in the terminal.

Certainly! Below is a simple Bash script that lists all files in a specified directory that have a certain suffix (file extension). You can customize the directory path and the file suffix as needed.

```bash
#!/bin/bash

# Check if the correct number of arguments is provided
if [ "$#" -ne 2 ]; then
    echo "Usage: $0 <directory_path> <file_suffix>"
    exit 1
fi

# Assign arguments to variables for better readability
DIRECTORY="$1"
SUFFIX="$2"

# Check if the specified directory exists
if [ ! -d "$DIRECTORY" ]; then
    echo "Error: Directory '$DIRECTORY' does not exist."
    exit 1
fi

# Use 'find' to list files with the specified suffix
echo "Files in '$DIRECTORY' with suffix '$SUFFIX':"
find "$DIRECTORY" -type f -name "*.$SUFFIX"
```

### How to Use This Script
1. Save the script to a file, for example, `list_files.sh`.
2. Make the script executable by running:
   ```bash
   chmod +x list_files.sh
   ```
3. Run the script by providing the directory path and the file suffix (without the dot) as arguments. For example:
   ```bash
   ./list_files.sh /path/to/directory txt
   ```

### Example
If you want to find all `.jpg` files in the `/home/user/pictures` directory, you would run:
```bash
./list_files.sh /home/user/pictures jpg
```

This will print all `.jpg` files in the specified directory to the terminal.