Retrieving the operating system (OS) version in Unix-based systems is a fundamental task for system administrators, developers, and users alike. Understanding the OS version provides valuable information about the system’s capabilities, security patches, and compatibility with applications. There are several commands available in Unix to accomplish this task, each offering different levels of detail and flexibility.
One of the most straightforward methods to check the OS version is using the `uname` command. This command displays various system information, including the OS name, version, and hardware architecture. To display only the OS version, use the `-r` option: