ls  Common Command-Line Options

Command  Use：

ls -l    Shows a long listing, which includes information about file properties, such as creation date and permissions.

ls -a    Shows all files, including hidden files.

ls -lrt    This is a very useful command. It shows commands sorted on modification date. You’ll see the most recently modified files last in the list.

ls -d    Shows the names of directories, not the contents of all directories that match the wildcards that have been used with the  ls  command.

ls -R    Shows the contents of the current directory, in addition to all of its subdirectories; that is, it  R ecursively descends all subdirectories.