To show a recursive directory listing on Linux or Unix, you can use the ls command with the -R option:
ls -R
This will display a recursive listing of all the files and directories under the current directory, including the subdirectories and their contents.
You can also use the find command to achieve the same result:
$ find .
This will display a list of all the files and directories under the current directory, including the subdirectories and their contents.
Additionally, you can use the tree command to display a tree-like structure of the directory tree:
$ tree
This will show a hierarchical representation of the directory tree, with directories represented as branches and files represented as leaves.