To find the name of a directory from its path in Unix, you can use the basename command.
For example, to find the name of the directory /home/user/documents, you can use the following command:
basename /home/user/documents
This will output the name of the directory, documents, without the leading path.
You can also use the dirname command to find the name of the parent directory of a file or directory. For example, to find the name of the parent directory of the file /home/user/documents/file.txt, you can use the following command:
dirname /home/user/documents/file.txt
This will output the name of the parent directory, documents, without the trailing file name.
Overall, the basename and dirname commands are useful tools for finding the names of directories and files from their paths in Unix.