SORT(I) 5/7/73 SORT(I)
sort - sort a file
sort [ -anr ] [ +n ] [
-n ] [ input [ output ] ]
Sort sorts input and writes the result on output. If the
output file is not given, the standard output is used. If
the input file is missing, the standard input is used. Thus
sort may be used as a filter. The input and output file may
be the same.
The sort is line-by-line in increasing ASCII collating
sequence, except that upper-case letters are considered the
same as the corresponding lower-case letters.
Sort understands several flag arguments.
-a Use strict ASCII collating sequence.
-n An initial numeric string is sorted by numerical value.
-r Output is in reverse order.
-n The first n fields in each line are ignored. A field
is defined as a string of non-space, non-tab characters
separated by tabs and spaces from its neighbors.
+n The first n characters are ignored in the sort. Fields
(with -n) are skipped before characters.
The largest file that can be sorted is about 128K bytes.