Apart from the file not existing in the current directory, you may not have appropriate permissions to delete the file or the problem may be as simple as mistyping the file's name. Here's a number of tools you may find useful:

• unlink can tell you why the file wasn't deleted.
• Use Cwd to determine what the current directory is.
• Use chdir to change the current directory.
• Use file test operators to check for the existence of the file and what its permissions are.
• Use opendir and readdir to list all the files in a particular directory.
• Use qx{...} or `...` (see perlop - Quote-Like Operators) to run whatever commands are available on your OS to do any of the above.

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