如何在bash shell脚本中打印条件语句

if [ condition ]; then
    # code block to be executed if condition is true
else
    # code block to be executed if condition is false
fi

#!/bin/bash

num=10

if [ $num -eq 10 ]; then
    echo "The number is 10."
else
    echo "The number is not 10."
fi

case $variable in
    pattern1)
        # code block to be executed if variable matches pattern1
        ;;
    pattern2)
        # code block to be executed if variable matches pattern2
        ;;
    *)
        # code block to be executed if variable does not match any pattern
        ;;
esac

#!/bin/bash

fruit="apple"

case $fruit in
    "apple")
        echo "It's an apple."
        ;;
    "banana")
        echo "It's a banana."
        ;;
    *)
        echo "It's neither an apple nor a banana."
        ;;
esac