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awk - oneliner to compute the total of a column
Description

Here is a oneliner to compute the total of a column:

# echo file | awk 'BEGIN { i = 0} { i += $5 } END { print i }'

Note: The BEGIN statement can be omitted:

# echo file | awk '{ i += $5 } END { print i }'

For example the total resident memory in IBM AIX:

# ps auxwww | awk '{ i += $5 } END { print i }'
Example

ps auxwww | awk '{ i += $5 } END { print i }'

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