Sorting problems

[Mark Levison]

I have been trying to use the sort facility on machine (Sun 3/80, SunOS
4.0.3) for the past few days. I have run into several problems first the
-z option gets

maestrosh[277]sort -m -z 5000 breakup
sort: invalid use of command line options
maestrosh[278]

Second to avoid running out of memory during the sort phase I have had to
use the split function and then sort each file individually followed by a
merge phase. When merging the result I have tried to use the -u option ie.

sort -n -mu file1 file2 >! outputfile

but this causes sort to include only one of the following lines

-----line 1 (wrapped around to avoid news/mailer problems)
77 0 4408 4410 1 DOCUMENT 1 0 8 SECTION 1 7 9 HEADING 1 8
/DOCUMENT/SECTION/HEADING

-----line 2
77 0 4689 4690 1 DOCUMENT 1 0 8 SECTION 2 15 9 HEADING 1 16
/DOCUMENT/SECTION/HEADING

These lines are obviously different. In the short term I have gotten
around the problem by leaving the uniqing until after the merge phase and
using the uniq command which appears to work. As far as I can tell from
the man page the sort fields should be the entire line unless I specify
otherwise on the command line.

Can anyone shed some light on these on these two problems?

Mark Levison
levisonm at qucis.queensu.ca