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      • Go's os Package

      The Go os package is a core standard library component that provides a platform-independent interface for interacting with the operating system. It enables developers to write portable system-level code across operating systems like Linux, macOS, and Windows without worrying about underlying platform differences.

      Key Capabilities:

      • File System Management: Create, open, read, write, and delete files or directories (e.g., os.Create, os.ReadFile, os.WriteFile, os.MkdirAll, os.RemoveAll).
      • Environment Variables: Fetch, set, or check system environment variables using os.Getenv, os.Setenv, and os.LookupEnv.
      • Process & System Controls: Access command-line arguments (os.Args), query the process ID (os.Getpid), get current working directories (os.Getwd), or terminate execution (os.Exit).
      • Standard I/O Streams: Direct access to standard input, standard output, and standard error (os.Stdin, os.Stdout, os.Stderr) wrapped as file handles.

      It also includes error-handling utilities like os.IsNotExist() to reliably identify common system errors across different operating systems.