temporary filename

The blog post explores the `mktemp` utility, particularly focusing on the `mktemp -u` command for generating unique temporary filenames without creating actual files on Linux and Unix-like systems. This is crucial for reserving filenames for later use, enhancing script safety and efficiency. The post discusses utility installation, provides usage examples, and differentiates between `mktemp` and `mktemp -u`, emphasizing its importance in system management and security.