What are the different columns in this Terminal display?
Solution 1:
From left to right, the columns are: permissions (e.g., read, write, execute), then the number of links, the owning user of the file, the owning group of the file, the file size (bytes for files, 512 byte blocks for directories), and the last time the file was accessed. The column you didn't show on the far right is the name of the file in question.
For future reference, you can always run man <command> to find information about a command. So in this case, man ls will provide the information you're looking for.