/home/lee#cat file
123.00|-123.00|123.00
456.00|456.00|-456.00
/home/lee#\
> func () { awk 'BEGIN{FS=OFS="|"}{gsub(/-/,"",$'"$1"');print}' $2; }
/home/lee#func 2 file
123.00|123.00|123.00
456.00|456.00|-456.00
/home/lee#func 3 file
123.00|-123.00|123.00
456.00|456.00|456.00
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