in Bash's Sort, how do I sort by a second or third field ?

On solaris I have data:  

N00412L3.daysold 140 37
N00160L3.daysold 18 38
N00158L3.daysold 11 39

the 14 days old of the tape and I want to sort to find tapes over 90.

I think sort with a -t or a -k may do it.  I think this is not written about much on the web :)


itguy411Asked:
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edster9999Commented:
sort -k 2
would sort the list based on the second field
this doesn't really work as it will be in this order :

N00158L3.daysold 11 39
N00412L3.daysold 140 37
N00160L3.daysold 18 38

as it is done by alphabet order so it is looking at 11, 14, 18

sort -k 2 -n
gets it sorted by numbers :

N00158L3.daysold 11 39
N00160L3.daysold 18 38
N00412L3.daysold 140 37

and finally
sort -k 2 -n -r
the -r gets it in reverse order

N00412L3.daysold 140 37
N00160L3.daysold 18 38
N00158L3.daysold 11 39

so now you can go down the list until you hit 90.
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itguy411Author Commented:
This really helps me

You rocke

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