Which command is used to list files in a directory?

The command used to list files in a directory in Linux is "ls." This command displays a listing of files and directories within the current directory or a specified directory. It is commonly used in Linux environments and is known for its concise output, which makes it easier for users to quickly see the contents of a directory.

Additionally, the "ls" command can be enhanced with various options and arguments to modify its output. For example, options like "-l" provide a long listing format that includes detailed file information such as permissions, owner, size, and modification date.

The other commands listed do not function as standard commands for listing files in Linux. "list" and "show" are not recognized commands in this context, while "dir" is primarily associated with DOS and Windows command line environments, where it serves a similar purpose but is not commonly used in Linux.