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Shell Programming and Scripting

Rows to Columns with match criteria

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# 8  
Old 06-10-2014
Another awk solution:

Code:
awk '{
        f=($1==r)?f+=1:f=1
        A[NR, f]=$0
        r=$1
        maxf=(f>maxf)?f:maxf
}
END{
        for (i=1;i<=maxf;i++) {
            for (x=1;x<=NR;x++)
            if (A[x, i]) {
                printf A[x, i] "\t"
            }
            print ""
        }
}' inputfile

# 9  
Old 06-10-2014
Dear pilnet101,

if (A[x, i]) {... will fail if array element is null or zero, so its better to check (key in array) see this example...

Code:
$ awk 'BEGIN{A[1 FS 2]=""; if(A[1 FS 2])print 1; if((1 FS 2) in A)print 1,"this is best method" }'

# 10  
Old 06-11-2014
Thanks for the advice Akshay, I will use that method instead.

I also notice that my solution will not work if the $1 value is not in order as it is not using arrays, so will have to look to change that as well.
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