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Awk Expense Calculator, by Ward Cunningham
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#!/usr/bin/awk -f | |
# Source: http://c2.com/doc/expense/ | |
/^[A-Z]+[A-Z0-9]*$/ { | |
if (sums[$1] == "" || $1 == "SUM") { | |
sums[$1] = sum # Define Symbol | |
$1 = sum | |
sum = 0 | |
} | |
else { | |
$1 = sums[$1] # Dereference Symbol | |
} | |
} | |
($1+0) != 0 {$1 = sprintf("%7.2f", $1)} # Pretty Print | |
{print} | |
$2 == "*" {$1 *= $3} # Explicit Calculations | |
$2 == "/" {$1 /= $3} | |
$2 == "DB" {$1 = -$1} | |
$2 == "CR" {$1 = -$1} | |
NF == 0 {sum = 0} # Implicit Summation | |
{sum += $1} |
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