asort: print the input lines in sorted order
By default the input lines are handled as whole strings

Parameters:
-r: reversed order
-n: handle the input as numbers (12 < 110)
-t {c}: use the c char as column delimiter
-delim {c}: see -t
-k {n}: use the n-th column as a sorting key
  Several keys can be specified, the sorting order is that
  of the definition. The output will contain the entire input lines
-ie {expression}: use the result of the expression as the base for
  the sorting (for xmpl like a substring). This is used only for the
  sorting - the output will contain the entire (unmodified) input string.
  The name of the runtime variable is 'line'.

Examples:
acat ... | sort
  -> simple char-based string

... | sort -n
  -> number based sorting

... | sort -ie "strtok(line, ' ', 1)"
  -> use the second token of the input lines as the base for the sorting
    Input: 0 apple
           1 plum
           2 grape
    With simple string-based sorting the result is the same as in this list
    (defined by the leading numbers).
    The example results the fruit-name-based sorting order:
           0 apple
           2 grape
           1 plum