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

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#!/bin/sh

tr -d a-z < $1 | grep -o '^.' > first
tr -d a-z < $1 | grep -o '.$' > 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`

			`tr -d a-z < $1 \| grep -o '^.' > first`
			`tr -d a-z < $1 \| grep -o '.$' > last`
			`paste -d '\0' first last \| \`
			`awk 'BEGIN { sum = 0 } { sum += $0 } END { print sum }'`