mirror of https://gitee.com/openkylin/systemd.git
48 lines
1.3 KiB
Bash
Executable File
48 lines
1.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# SPDX-License-Identifier: LGPL-2.1-or-later
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set -eu
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set -o pipefail
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# Note: 'grep ... >/dev/null' instead of just 'grep -q' is used intentionally
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# here, since 'grep -q' exits on the first match causing SIGPIPE being
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# sent to the sender.
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BINARY="${1:?}"
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export SYSTEMD_LOG_LEVEL=info
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if [[ ! -x "$BINARY" ]]; then
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echo "$BINARY is not an executable"
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exit 1
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fi
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# output width
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if "$BINARY" --help | grep -v 'default:' | grep -E '.{80}.' >/dev/null; then
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echo "$(basename "$BINARY") --help output is too wide:"
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"$BINARY" --help | awk 'length > 80' | grep -E --color=yes '.{80}'
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exit 1
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fi
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# --help prints something. Also catches case where args are ignored.
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if ! "$BINARY" --help | grep . >/dev/null; then
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echo "$(basename "$BINARY") --help output is empty"
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exit 2
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fi
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# no --help output to stderr
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if "$BINARY" --help 2>&1 1>/dev/null | grep .; then
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echo "$(basename "$BINARY") --help prints to stderr"
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exit 3
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fi
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# error output to stderr
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if ! ("$BINARY" --no-such-parameter 2>&1 1>/dev/null || :) | grep . >/dev/null; then
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echo "$(basename "$BINARY") with an unknown parameter does not print to stderr"
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exit 4
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fi
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# --help and -h are equivalent
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if ! diff <("$BINARY" -h) <("$BINARY" --help); then
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echo "$(basename "$BINARY") --help and -h are not identical"
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exit 5
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fi
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