/*
* sh_flow.d - snoop Bourne shell execution showing function flow using DTrace.
* Written for the sh DTrace provider.
*
* $Id: sh_flow.d 41 2007-09-17 02:20:10Z brendan $
*
* This traces shell activity from all Bourne shells on the system that are
* running with sh provider support.
*
* USAGE: sh_flow.d # hit Ctrl-C to end
*
* This watches shell function entries and returns, and indents child
* function calls. Shell builtins are also printed.
*
* FIELDS:
* C CPU-id
* TIME(us) Time since boot, us
* FILE Filename that this function belongs to
* NAME Shell function, builtin or command name
*
* LEGEND:
* -> function entry
* <- function return
* > builtin
* | external command
*
* WARNING: Watch the first column carefully, it prints the CPU-id. If it
* changes, then it is very likely that the output has been shuffled.
*
* COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* See the License for the specific language governing permissions
* and limitations under the License.
*
* CDDL HEADER END
*
* 09-Sep-2007 Brendan Gregg Created this.
*/
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