finding greatest value in a column using awk from iostat output in linux

Shell Programming and Scripting
1

Friends,
.
On linux i have to run iostat command and in each iteration have to print the greatest value in each column.

e.g

iostat -dt -kx 2 2 | awk ' !/sd[a-z][0-9]/ &&!/%util/ && !/Time/ && !/Linux/ {print $12}'

4.38
0.00

0.00
0.00

What i would like to print is only the greatest value in each iteration. Can someone guide me with this.

2 
iostat -dt -kx 2 2 | awk ' !/sd[a-z][0-9]/ &&!/%util/ && !/Time/ && !/Linux/ {if(max < $12)max=$12}END{print max}'

or

iostat -dt -kx 2 2 | awk ' !/sd[a-z][0-9]/ &&!/%util/ && !/Time/ && !/Linux/ {print $12}' | sort | tail -1

cheers,
Devaraj Takhellambam

3

Dont open multiple threads for the same issue, delete this one.

4

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Proceed here:

http://www.unix.com/shell-programming-scripting/131223-finding-greatest-value-column-using-awk-iostat-output-linux.html\#post302400024

Thank You.

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