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Awk

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Usage ​

shell
awk OPTIONS PROGRAM_TEXT

Examples ​

Calculate the average of some numbers in a column (new line separated).

shell
echo -e '4\n5' | awk '{ sum += $1 } END { printf "%.2f\n", sum/NR }'

Calculate the average of some numbers in a row (space separated).

shell
echo '4 5' | awk '{ sum = 0; for (i = 1; i <= NF; i++) { sum += $i } printf "%.2f\n", sum/NF }'