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<oerjan> slbd undo//1acd ${HACKENV-/hackenv}
author HackEso <hackeso@esolangs.org>
date Wed, 20 Nov 2019 04:12:48 +0000
parents 405c0e846fcc
children
line wrap: on
line source

line="${1-$(cat $HACKENV/tmp/spline)}"; len="$(awk 'END{print NR}' $HACKENV/tmp/spout)"; echo -n "$line/$len:"; sed -n "${line}{p;q}" $HACKENV/tmp/spout; echo "$((line<len?line+1:1))" > $HACKENV/tmp/spline