Question

How can I calculate following data?

Input:

2 Printers
2 x 2 Cartridges
2 Router
1 Cartridge

Output:

Total Number of Printers: 2
Total Number of Cartridges: 5 
Total Number of Router: 2

Please note that Cartridges have been multiplied (2 x 2) + 1 = 5. I tried following but not sure how to get the number when I have (2 x 2) type of scenario:

awk -F " " '{print $1}' Cartridges.txt >> Cartridges_count.txt
CartridgesCount=`( echo 0 ; sed 's/$/ +/' Cartridges_count.txt; echo p ) | dc`

echo "Total Number of Cartridges: $CartridgesCount"

Please advise.

Answer 1

Try something like this (assuming a well formatted input) …

sed -e 's| x | * |' -e 's|^\([ 0-9+*/-]*\)|echo $((\1)) |' YourFileName | sh | awk '{a[$2]+=$1;} END {for (var in a) print a[var] " "var;}'

P.S. Cartridges and Cartridge are different. If you want to take care of that too, it would be even more difficult but you can modify the last awk in the pipeline.