Description: The shell internal command refers to those commands that are directly integrated into the shell itself, known as the shell. Unlike external commands, which require the execution of independent programs, internal commands are part of the shell’s code and are executed without the need to invoke an additional process. This allows for faster and more efficient execution, as there is no overhead associated with creating a new process. Internal commands typically include basic operations such as navigating directories, manipulating environment variables, and managing processes. Their integration into the shell allows users to perform fundamental system administration tasks and automate tasks more smoothly. Additionally, internal commands are essential for customizing the working environment, as they enable users to modify shell configurations and behaviors in real-time. In summary, shell internal commands are key tools for interacting with the operating system, providing an efficient and direct interface for executing common tasks.
