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# 1  
Old 08-16-2011
Question sorting on one column
Hello all,

Is there a way to sort only one column while keeping everything else intact. Take for example this situation: (all columns are space separated)

Code:
11 AA asdf 1 -0.5 xx
11 AA axdf 1 -0.6 xx
11 AA csls 1 -0.7 xx
11 AA hjkj 1 -0.4 xx
11 AA uius 1 -0.8 xx
22 AA asdf 1 -0.4 xx
22 AA axdf 1 -0.7 xx
22 AA csls 1 -0.6 xx
22 AA hjkj 1 -0.9 xx
22 AA uius 1 -0.2 xx

the output should have the 1st, 2nd, 3rd, 4th and 6th columns intact and only the 5th column needs to be sorted. i.e. note the 5th column has negative values.

Code:
11 AA asdf 1 -0.4 xx
11 AA axdf 1 -0.5 xx
11 AA csls 1 -0.6 xx
11 AA hjkj 1 -0.7 xx
11 AA uius 1 -0.8 xx
22 AA asdf 1 -0.2 xx
22 AA axdf 1 -0.4 xx
22 AA csls 1 -0.6 xx
22 AA hjkj 1 -0.7 xx
22 AA uius 1 -0.9 xx

Please help with this. Thanks.
# 2  
Old 08-16-2011
Quote:
Is there a way to sort only one column while keeping everything else intact.
Yes. Look for -k option - Man Page for sort (OpenSolaris Section 1) - The UNIX and Linux Forums
# 3  
Old 08-16-2011
thanks. i know i can use -k5,5nr but then it will not consider the change in ids in the column 1.
# 4  
Old 08-16-2011
Sorry. You can do this with awk. I give you a solution during 10 minutes.
# 5  
Old 08-16-2011
in your input:
Code:
11 AA hjkj 1 -0.4 xx

in our output:
Code:
11 AA asdf 1 -0.4 xx

What's that meaning?

Maybe you can try this:
Code:
sort -k1n -k5rn -k2 -k3 -k4 -k6 infile

# 6  
Old 08-16-2011
Code:
#!/bin/ksh 
awk '{print $5}' /tmp/yourinputfile|sort -nr > /tmp/temp
paste /tmp/yourinputfile /tmp/temp|awk '{ print $1 " " $2 " " $3 " " $4 " "$7 " " $6}'

# 7  
Old 08-17-2011
Ok. With awk you should use a temp file (or it would be too complex), IMO. Anyway dude2cool wrote the programm according your description (with a little bug - there are only 6 fields).

I've written a simple program on perl but then I see that your example of the output is more complex than your description.

You want to sort records (lines with the same ID) according column 5 and you don't want touch columns 2,3,4, and 6 (the first one should be the same for all the record).

Am I right?
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