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File system related tests what is that.

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In general we can test things which are related to file system.

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As for example checking of files and its permissions checking of symbolic things and so on.

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Let's look what five operators do we have.

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There is a list of most common ones the operator returns true if a variable holds an existing file.

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And by that it is fraud in a Linux environment file or a directory.

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Yes dedicatory you are hearing correctly because the directory is basically file which contains other

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files.

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Then we have f operator.

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We are using it.

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If we want to know if file we have provided is a regular file not that not a directory only a regular

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file.

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D operator.

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Returns true if a variable holds an existing directory.

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If we want to check if file has exit code permissions we are using x operator for checking symbolic

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Graines we are using capital L if you want to know if file is readable for us.

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The values are but and if you want to know if fout is ratable for us we can check it with W.

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Now.

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Let's see some simple example.

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We are asking if firelit represented by a variable fire and is now let's write some script where we

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can practice.