SYSCTL.CONF(5) File Formats Manual SYSCTL.CONF(5) sysctl.conf - Linux sysctl.conf Linux sysctl(8) procps sysctl systemd-sysctl(8) sysctl.d(5) /etc/sysctl.conf procps sysctl = "#" ";" "-" --system procps sysctl /etc/sysctl.d/*.conf /run/sysctl.d/*.conf /usr/local/lib/sysctl.d/*.conf /usr/lib/sysctl.d/*.conf /lib/sysctl.d/*.conf procps sysctl /etc/sysctl.confsystemd-sysctl sysctl Linux /proc 4096 # # kernel.domainname = example.com ; sysctl kernel.modprobe = /sbin/mod probe # net.ipv4.ip_local_reserved_ports=8080,9148 sysctl.d(5), sysctl(8), systemd-sysctl(8) procps-ng 2025-05-29 SYSCTL.CONF(5)