sysctl
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sysctl
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	#!/bin/sh
	#
	# Copyright (C) 2021 VyOS maintainers and contributors
	#
	# This program is free software; you can redistribute it and/or modify
	# it under the terms of the GNU General Public License version 2 or later as
	# published by the Free Software Foundation.
	#
	# This program is distributed in the hope that it will be useful,
	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	# GNU General Public License for more details.
	#
	# You should have received a copy of the GNU General Public License
	# along with this program. If not, see <http://www.gnu.org/licenses/>.

	declare -a array
	eval "array=($(/sbin/sysctl -N -a))"

	if [[ ! " ${array[@]} " =~ " $1 " ]]; then
	# passed sysctl option is invalid
	exit 1
	fi
	exit 0