ls(1) -lu %3Cfilename%3E
list directory contents
-l     use a long listing format
-u     with -lt: sort by, and show, access time with -l: show access time and  sort  by  name  otherwise:
       sort by access time
List information about the FILEs (the current directory by default).  Sort entries alphabetically if none
of -cftuvSUX nor --sort is specified.
source manpages: ls