sort by one columnt and then by another

[w5000]

Hello,
please tell me why second sort ignores -k4,4 sort?

# sort -t"," -k4,4 test
4,c,d,a,a
6,a,d,b,d
7,a,d,b,d
8,a,d,b,d
9,a,d,b,d
1,d,c,c,a
5,a,b,c,d
2,b,c,d,a
3,a,b,d,d
# sort -t"," -k4,4 -nk1,1 test
1,d,c,c,a
2,b,c,d,a
3,a,b,d,d
4,c,d,a,a
5,a,b,c,d
6,a,d,b,d
7,a,d,b,d
8,a,d,b,d
9,a,d,b,d


kind regards,

 

[feherke]

Hi

As far as I know, the [tt]-n[/tt] option applies the entire sorting.

With GNU coreutils [tt]sort[/tt] you can append an ordering option to each [tt]-k[/tt] criteria separately. See if your [tt]sort[/tt] supports it too :

sort -t"," -k4,4 -k1,1[highlight]n[/highlight] test

Feherke.
feherke.ga