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@@ -7,7 +7,9 @@ dtpstree \- display a tree of processes
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[\fIoptions\fR] [\fIPID|USER\fR]
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.SH DESCRIPTION
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.B dtpstree
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-shows running processes as a tree.
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+shows running processes as a tree. It is a reimplementation of \fBpstree\fR from
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+\fIPSmisc\fR for FreeBSD. It also works without \fI/proc\fR and will show the
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+full set of processes in a jail even if \fBinit\fR is not present.
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.SH OPTIONS
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.TP
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\fB\-a\fR, \fB\-\-arguments\fR
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