Golang os Package Guide

The os package is one of the standard libraries provided by the Go language for interacting with the operating system. It includes functions and types for executing various operating system-related tasks such as file operations, environment variables, and process control.

Some common functions included in the os package are:

1. File and directory operations, including opening files, reading and writing files, creating directories, and deleting files.
2. Process control: includes obtaining process ID, waiting for process to end, executing external commands, etc.
3. Environmental variables: this includes obtaining, setting, and deleting environmental variables.
4. Operations on file descriptors, such as duplication and closure.

In general, the os package provides basic functionalities for Go programs to interact with the operating system, allowing for better communication and control.