Linux ls

Cuando estás copiando y el fichero guarda la fecha original de creación, pero quieres ver la fecha de último acceso

ls -lu --time=ctime

--time=atime : updated when the file is read
--time=birth : updated when the file contents change. This is the «default» file time in most cases. (mtime)
--time=ctime : updated when the file or its metadata (owner, permissions) change

-u - with -lt: sort by, and show, access time;
         - with -l: show access time and sort by name;
         - otherwise: sort by access time, newest first

Valid arguments are:
  - ‘atime’, ‘access’, ‘use’
  - ‘ctime’, ‘status’
  - ‘birth’, ‘creation’
Try 'ls --help' for more information.

/via: https://unix.stackexchange.com/questions/8840/last-time-file-opened