The command to list the contents of a directory in Unix and Unix-like operating systems is:

ls

This command lists the files and directories in the current working directory by default.

Additional details about the ls command:

• You can list contents of a specific directory by providing its path, e.g., ls /path/to/directory.
• Common options include:
  • -l: long listing format showing detailed file information.
  • -a: includes hidden files (those starting with a dot).
  • -h: human-readable file sizes.
  • -R: list subdirectories recursively.
• To list only directories, you can use ls -d */ which lists directories themselves, not their contents.

The ls command is widely used across Unix and Unix-like systems such as Linux and macOS for navigation and file management purposes.