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#!/bin/sh
set -eu
export SYSTEMD_LOG_LEVEL=info
# output width
if "$1" --help | grep -v 'default:' | grep -E -q '.{80}.'; then
echo "$(basename "$1") --help output is too wide:"
"$1" --help | awk 'length > 80' | grep -E --color=yes '.{80}'
exit 1
fi
# no --help output to stdout
if "$1" --help 2>&1 1>/dev/null | grep .; then
echo "$(basename "$1") --help prints to stderr"
exit 2
fi
# error output to stderr
if ! "$1" --no-such-parameter 2>&1 1>/dev/null | grep -q .; then
echo "$(basename "$1") with an unknown parameter does not print to stderr"
exit 3
fi
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