What is secure temp files in Perl?

Secure temporary files in Perl refer to the practice of creating temporary files in a way that minimizes security risks such as unauthorized access or exposure of sensitive information. Perl provides built-in functionalities to handle temporary files securely, which is essential when dealing with user-generated data or sensitive information that should not be exposed to other users on the system.

When creating temporary files, it is vital to ensure that they are created in a secure manner and are automatically deleted when no longer needed. This can be done using the `File::Temp` module, which provides a variety of functions to create secure temporary files and directories.

Using temporary files securely helps prevent attacks such as symbolic link attacks and ensures that the files have appropriate permissions to restrict access.

use File::Temp qw(tempfile tempdir);

# Create a secure temporary file
my ($fh, $filename) = tempfile();

# Write data to the temporary file
print $fh "Some sensitive information\n";

# Ensure the file is closed
close($fh);

# Use the temporary file as necessary...

# The temporary file will be automatically deleted when the program exits or the filehandle is closed