diff options
Diffstat (limited to 'usr.bin/ktrace')
| -rw-r--r-- | usr.bin/ktrace/ktrace.1 | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/usr.bin/ktrace/ktrace.1 b/usr.bin/ktrace/ktrace.1 index fd2d390..0260b1e 100644 --- a/usr.bin/ktrace/ktrace.1 +++ b/usr.bin/ktrace/ktrace.1 @@ -32,7 +32,7 @@ .\" @(#)ktrace.1 8.1 (Berkeley) 6/6/93 .\" $FreeBSD$ .\" -.Dd June 6, 1993 +.Dd November 6, 2006 .Dt KTRACE 1 .Os .Sh NAME @@ -64,7 +64,7 @@ either the process exits or the trace point is cleared. A traced process can generate enormous amounts of log data quickly; It is strongly suggested that users memorize how to disable tracing before attempting to trace a process. -The following command is sufficient to disable tracing on all user owned +The following command is sufficient to disable tracing on all user-owned processes, and, if executed by root, all processes: .Pp .Dl \&$ ktrace -C @@ -73,12 +73,16 @@ The trace file is not human readable; use .Xr kdump 1 to decode it. .Pp -The options are as follows: +The utility may be used only with a kernel that has been built with the +.Dq KTRACE +option in the kernel configuration file. +.Pp +The options are: .Bl -tag -width indent .It Fl a Append to the trace file instead of recreating it. .It Fl C -Disable tracing on all user owned processes, and, if executed by root, all +Disable tracing on all user-owned processes, and, if executed by root, all processes in the system. .It Fl c Clear the trace points associated with the specified file or processes. @@ -160,7 +164,7 @@ on process 67 # disable all tracing to the file "tracedata" .Dl $ ktrace -c -f tracedata .Pp -# disable tracing of all processes owned by the user +# disable tracing of all user-owned processes .Dl $ ktrace -C .Sh SEE ALSO .Xr kdump 1 |
