Which command is typically used to list files and directories in a directory?

The command that is typically used to list files and directories in a directory is "ls." This command is a standard utility in Unix and Unix-like operating systems, including Linux, and is commonly utilized to display the contents of a specified directory or the current working directory when no arguments are provided.

When executed, "ls" provides a simple and effective way to view files and folders, and it can be augmented with various options (like -l for detailed information or -a to include hidden files) to modify its output, making it a versatile tool for file management in the Linux environment.

While "dir" is also a command that can be used in some systems to achieve similar functionality, it is more common in Windows environments rather than Linux. The commands "list" and "show" are not standard commands for listing directory contents, which is why they are not the correct choice in this context.