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Shell Programming and Scripting

Identifying the column number

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# 1  
Old 09-28-2007
Identifying the column number
I'd like to be able to identify in which column a string occurs. So far I know that I can tell how many columns there are and how to return a specific column:

Code:
$ sar -r | grep 'kbswpcad' | awk 'NF = 9 { print $NF }'
%swpused

I've even managed to get the columns to output to an array but I think this is over complicated:

Code:
$ sar -r | head -3 | tail -1 | tr -s [:blank:] " " | awk '{ split($0, head, " ") } END { for (i in head) print i, " : "head[i] }'
4  : %memused
5  : kbbuffers
6  : kbcached
7  : kbswpfree
8  : kbswpused
9  : %swpused
10  : kbswpcad
1  : 00:00:01
2  : kbmemfree
3  : kbmemused

Using the above I still can't do a string check on the array element.

So, in short, how find out which column %swpused is in?

Thanks in advance Smilie
# 2  
Old 09-28-2007
go through the fields.
Code:
sar -r | grep 'kbswpcad' | awk '{ for(i;i<=NF;i++){
    if ($i ~ /swpused/) { print i } }
}'

# 3  
Old 09-28-2007
Brilliant! Thanks Ghostdog74 Smilie
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