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authoralfred <alfred@FreeBSD.org>2012-12-11 01:28:06 +0000
committeralfred <alfred@FreeBSD.org>2012-12-11 01:28:06 +0000
commit2a065c7bf07356bbc84ff330f04ecf38d851febf (patch)
tree837ee4aba0e9bdea5797e911dbfb8c4477e390a1 /sbin/sysctl/sysctl.8
parentf63b721d8ae8f97828573d890c7de47e03cac25c (diff)
downloadFreeBSD-src-2a065c7bf07356bbc84ff330f04ecf38d851febf.zip
FreeBSD-src-2a065c7bf07356bbc84ff330f04ecf38d851febf.tar.gz
Allow sysctl to filter boot and runtime tunables.
Add the following flags to sysctl: -W - show only writable sysctls -T - show only tuneable sysctls This can be used to create a /var/run/sysctl.boot to compare set tunables versus booted tunables. Sponsored by: iXsystems
Diffstat (limited to 'sbin/sysctl/sysctl.8')
-rw-r--r--sbin/sysctl/sysctl.89
1 files changed, 7 insertions, 2 deletions
diff --git a/sbin/sysctl/sysctl.8 b/sbin/sysctl/sysctl.8
index be43e68..514acd1 100644
--- a/sbin/sysctl/sysctl.8
+++ b/sbin/sysctl/sysctl.8
@@ -36,11 +36,11 @@
.Nd get or set kernel state
.Sh SYNOPSIS
.Nm
-.Op Fl bdehiNnoqx
+.Op Fl bdehiNnoRTqx
.Ar name Ns Op = Ns Ar value
.Ar ...
.Nm
-.Op Fl bdehNnoqx
+.Op Fl bdehNnoRTqx
.Fl a
.Sh DESCRIPTION
The
@@ -121,6 +121,11 @@ sixteen bytes of the value.
Suppress some warnings generated by
.Nm
to standard error.
+.It Fl T
+Display only variables that are setable via loader (CTLFLAG_TUN).
+.It Fl W
+Display only wriable variables that are not statistical.
+Useful for determining the set of runtime tunable sysctls.
.It Fl X
Equivalent to
.Fl x a
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