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+.\" $FreeBSD$
+.Dd November 23, 1997
+.Dt PROCCTL 8
+.Os
+.Sh NAME
+.Nm procctl
+.Nd clear procfs event flags
+.Sh SYNOPSIS
+.Nm
+.Ar pid ...
+.Sh DESCRIPTION
+The
+.Nm
+utility 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 arguments are a list of process IDs;
+.Nm
+goes through the list and clears the event masks for each specified process.
+.Sh SEE ALSO
+.Xr truss 1 ,
+.Xr procfs 5
+.Sh HISTORY
+The
+.Nm
+utility was written by
+.An Sean Eric Fagan
+for
+.Fx .