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Possible bug in "sort"
From: |
Béla Horváth |
Subject: |
Possible bug in "sort" |
Date: |
Thu, 09 Aug 2007 15:18:42 +0200 |
Dear All,
I have a problem with "sort" (I tested it on ubuntu 7.04, on Mac OSX, and on
AIX too, and they are identical)
I try to sort the attached file. Field separator is <tab>, but in the timestamp
field between date and time there is a <space>, not a <tab>.
I have to sort as first key for timestamp (field 3) - "string like", and as
second key for sequence number, (field 6) - "numeric like".
sort -t\<tab> -k3 ts.txt
works fine for field 3, if I use the second key.
sort -t\<tab> -k3 -k6n ts.txt
k3 works fine, but k6 works not numerically. If I test only to sort for k6
sort -t\<tab> -k6n ts.txt
it seams to be correct, but not together. After this I tried to use
the -n global option:
sort -t\<tab> -n -k3 -k6n ts.txt
the sort for k3 will be no more correct (see the line in the last
field marked with xxx) if I try -k3b or -k3d instead of -k3 , the
result will be the same. But if I take the global -b option too,
sort -t\<tab> -b -n -k3 -k6n ts.txt
then k3 will be OK, but k6 will not be sorted numerically anymore.
I think, it might be a bug.
Best wishes:
Bela Horvath
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ts.txt
Description: Text document
- Possible bug in "sort",
Béla Horváth <=