Need help UNIX

 
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Old 10-10-2013
Need help UNIX

hello guys,
I'd like to know how to make synthetic trace from a model ( velocities and densities known) with receiver placed vertically (in well) in seismic unix,
could someone explained it to me?Smilie

Best Regards,

abda
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POSIX_TRACE_START(P)					     POSIX Programmer's Manual					      POSIX_TRACE_START(P)

NAME
posix_trace_start, posix_trace_stop - trace start and stop (TRACING) SYNOPSIS
#include <trace.h> int posix_trace_start(trace_id_t trid); int posix_trace_stop (trace_id_t trid); DESCRIPTION
The posix_trace_start() and posix_trace_stop() functions, respectively, shall start and stop the trace stream identified by the argument trid. The effect of calling the posix_trace_start() function shall be recorded in the trace stream as the POSIX_TRACE_START system trace event and the status of the trace stream shall become POSIX_TRACE_RUNNING. If the trace stream is in progress when this function is called, the POSIX_TRACE_START system trace event shall not be recorded and the trace stream shall continue to run. If the trace stream is full, the POSIX_TRACE_START system trace event shall not be recorded and the status of the trace stream shall not be changed. The effect of calling the posix_trace_stop() function shall be recorded in the trace stream as the POSIX_TRACE_STOP system trace event and the status of the trace stream shall become POSIX_TRACE_SUSPENDED. If the trace stream is suspended when this function is called, the POSIX_TRACE_STOP system trace event shall not be recorded and the trace stream shall remain suspended. If the trace stream is full, the POSIX_TRACE_STOP system trace event shall not be recorded and the status of the trace stream shall not be changed. RETURN VALUE
Upon successful completion, these functions shall return a value of zero. Otherwise, they shall return the corresponding error number. ERRORS
These functions shall fail if: EINVAL The value of the argument trid does not correspond to an active trace stream and thus no trace stream was started or stopped. EINTR The operation was interrupted by a signal and thus the trace stream was not necessarily started or stopped. The following sections are informative. EXAMPLES
None. APPLICATION USAGE
None. RATIONALE
None. FUTURE DIRECTIONS
None. SEE ALSO
posix_trace_create() , the Base Definitions volume of IEEE Std 1003.1-2001, <trace.h> COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html . IEEE
/The Open Group 2003 POSIX_TRACE_START(P)