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How do I test if I file exists without attaching a filehandle to it?

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Contributed by Anonymous Monk on May 22, 2000 at 06:49 UTC
Q&A  > files


Description:

I have an application where I need to check if I file exists without actually modifying it in any way except for reading it's file name. What is the most common way of doing this?

Answer: How do I test if I file exists without attaching a filehandle to it?
contributed by ZZamboni

Note that most file test operators imply existence when they return a true value. So -r actually means "exists and is readable", and so on. So if you are interested not only on existence, but on some other specific condition of the file, you can simply use the appropriate operator and skip -e altogether.

Answer: How do I test if I file exists without attaching a filehandle to it?
contributed by athomason

Use the -e filetest operator. For example:

(-e 'input.dat') or die;
Answer: How do I test if I file exists without attaching a filehandle to it?
contributed by galande

Hi,
Use operators like -e, -r, -T for testing file permissions.

(-e <FILE/FILEHANDLE> returns true if file exists. -r <FILE/FILEHANDLE> returns true if file is readable. -T <FILE/FILEHANDLE> returns true if file is a text file.

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