cd

The "cd" command is a commonly used command line tool that stands for "change directory." It allows users to navigate through the file system in a command line interface. By typing "cd" followed by the name or path of a directory, the user can switch to that specific directory. For example, typing "cd Documents" would change the current directory to "Documents." The "cd" command is essential for moving around different folders and accessing files and directories in the command line environment.