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+.Dd Nov 23, 1997
+.Dt PROCCTL 1
+.Os FreeBSD
+.Sh NAME
+.Nm \&procctl
+.Nd clear procfs event flags
+.Sh Synopsis
+.Nm \&procctl
+.Ar command
+.Ar [...]
+.Sh DESCRIPTION
+.Nm \&procctl
+clears the
+.Xr procfs 5
+event mask used by
+.Xr truss 1 .
+This can be used in the event that a process is left stranded, since
+the
+.Xr procfs 5
+events result in a non-killable process.
+The options are a list of process ID's;
+.Nm \&procctl
+goes through the list and clears the event masks for each specified process.
+.Xr truss 1 ,
+.Xr procfs 5
+.Sh HISTORY
+The
+.Nm procctl
+command was written by Sean Eric Fagan for FreeBSD.