usr/src/share/doc/psd/05.sysman/2.5.t

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.\"     @(#)2.5.t       6.1 (Berkeley) %G%
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.sh "Process and kernel descriptors
.PP
The status of the facilities in this section is still under discussion.
The \fIptrace\fP facility of 4.1BSD is provided in 4.3BSD.  Planned
enhancements would allow a descriptor based process control facility.