如何确定字符串是否是另一个字符串的子字符串

Question

我正在尝试确定包含许多文件路径的大字符串中是否存在子字符串（文件名）。这是我的代码，它不起作用（打印“不包含”）。我尝试与 =~ 进行比较，不同的引号用法。从那似乎没有任何效果。请问我的代码有问题吗？

#!/bin/bash

text="/path/to/some/file1-2-3.json /another/path/to/file4-5-6.json"
my_file="file1-2-3.json"

if [[ *"$my_file"* == "$text" ]]; then
    echo "Contain"
else
    echo "Does not contain"
fi

Answer 1

如果您反转字符串，它会起作用：

$ more script.sh
#!/bin/bash

text="/path/to/some/file1-2-3.json /another/path/to/file4-5-6.json"
my_file="file1-2-3.json"

if [[ "$text" == *"$my_file"* ]]; then
        echo "Contain"
else
        echo "Does not contain"
fi
$ ./script.sh
Contain
$

表格man bash:

When the == and != operators are used, the string to the right of the operator is considered a pattern and matched according to the rules described below under Pattern Matching...

如何确定字符串是否是另一个字符串的子字符串

How to determine if string is a substring to another string

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string-comparison