防止用户查看其他用户进程

echo 'security.bsd.see_other_uids=0' >> /etc/sysctl.conf
echo 'security.bsd.see_other_gids=0' >> /etc/sysctl.conf

sysctl security.bsd.see_other_uids=0
sysctl security.bsd.see_other_gids=0

sysctl -a | grep security

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