coreutils: Sorting the output

1 
1 10.1.3 Sorting the output
1 -------------------------
1 
1 These options change the order in which ‘ls’ sorts the information it
1 outputs.  By default, sorting is done by character code (e.g., ASCII
1 order).
1 
1 ‘-c’
1 ‘--time=ctime’
1 ‘--time=status’
1      If the long listing format (e.g., ‘-l’, ‘-o’) is being used, print
1      the status change timestamp (the ctime) instead of the mtime.  When
1      explicitly sorting by time (‘--sort=time’ or ‘-t’) or when not
11      using a long listing format, sort according to the ctime.  ⇒
      File timestamps.
1 
1 ‘-f’
1      Primarily, like ‘-U’—do not sort; list the files in whatever order
1      they are stored in the directory.  But also enable ‘-a’ (list all
1      files) and disable ‘-l’, ‘--color’, and ‘-s’ (if they were
1      specified before the ‘-f’).
1 
1 ‘-r’
1 ‘--reverse’
1      Reverse whatever the sorting method is—e.g., list files in reverse
1      alphabetical order, youngest first, smallest first, or whatever.
1 
1 ‘-S’
1 ‘--sort=size’
1      Sort by file size, largest first.
1 
1 ‘-t’
1 ‘--sort=time’
11      Sort by modification timestamp (mtime), newest first.  ⇒File
      timestamps.
1 
1 ‘-u’
1 ‘--time=atime’
1 ‘--time=access’
1 ‘--time=use’
1      If the long listing format (e.g., ‘--format=long’) is being used,
1      print the last access timestamp (the atime).  When explicitly
1      sorting by time (‘--sort=time’ or ‘-t’) or when not using a long
11      listing format, sort according to the atime.  ⇒File
      timestamps.
1 
1 ‘-U’
1 ‘--sort=none’
1      Do not sort; list the files in whatever order they are stored in
1      the directory.  (Do not do any of the other unrelated things that
1      ‘-f’ does.)  This is especially useful when listing very large
1      directories, since not doing any sorting can be noticeably faster.
1 
1 ‘-v’
1 ‘--sort=version’
1      Sort by version name and number, lowest first.  It behaves like a
1      default sort, except that each sequence of decimal digits is
11      treated numerically as an index/version number.  (⇒Details
      about version sort.)
1 
1 ‘-X’
1 ‘--sort=extension’
1      Sort directory contents alphabetically by file extension
1      (characters after the last ‘.’); files with no extension are sorted
1      first.
1