advent-of-code/2023/day1/day1.2.sh

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#!/bin/sh

awk -f day1.2.awk $1 | tr -d a-z | grep -o '^.' > first
rev $1 | awk -f day1.2.rev.awk | rev | tr -d a-z | grep -o '.$' > last

paste -d '\0' first last | \
  awk 'BEGIN { sum = 0 } { sum += $0 } END { print sum }'
2023: Day 1, tweak to just use chimerautils 2023-12-01 23:20:09 +00:00			`#!/bin/sh`

			`awk -f day1.2.awk $1 \| tr -d a-z \| grep -o '^.' > first`
			`rev $1 \| awk -f day1.2.rev.awk \| rev \| tr -d a-z \| grep -o '.$' > last`

			`paste -d '\0' first last \| \`
			`awk 'BEGIN { sum = 0 } { sum += $0 } END { print sum }'`