如何在macOS bash脚本中打印方框绘制字符

#!/bin/bash

# 定义方框字符
corner="┌"
horizontal="─"
vertical="│"
bottom_corner="└"

# 定义要打印的字符
text="Hello, World!"

# 计算方框宽度
text_length=${#text}
box_width=$((text_length + 4))

# 打印方框上边框
for ((i=0; i<box_width; i++)); do
    echo -n "$horizontal"
done
echo "$corner"

# 打印方框中的字符
echo "$vertical $text $vertical"

# 打印方框下边框
for ((i=0; i<box_width; i++)); do
    echo -n "$horizontal"
done
echo "$bottom_corner"

bash draw_box.sh