How to stop debug in the mid of process?


 
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# 8  
Old 11-07-2013
ken6503

An excellent hint to step through scripts. I shall deploy it in scripts something like this:-
Code:
#!/bin/ksh
# Comments....
#

if [ ! -z "$DEBUGSTEP" ]
then
   set -x
   trap "read" DEBUG
fi
echo 1
echo 2
echo 3

In normal use, DEBUGSTEP will be null and therefore no action is taken, but when required I can step through a script and debug without updating the production script or any calling script.


Marvellous!


Thanks again,
Robin
 
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SystemStarter(8)					    BSD System Manager's Manual 					  SystemStarter(8)

NAME
SystemStarter -- Start, stop, and restart system services SYNOPSIS
SystemStarter [-gvxdDqn] [action [service]] DESCRIPTION
The SystemStarter utility is deprecated. System services should instead be described by a launchd.plist(5). See launchd(8) for more details. The launchd utility is available on Mac OS X 10.4 and later. In earlier versions of Mac OS X, the SystemStarter utility is used to start, stop, and restart the system services which are described in the /Library/StartupItems/ and /System/Library/StartupItems/ paths. The optional action argument specifies which action SystemStarter performs on the startup items. The optional service argument specifies which startup items to perform the action on. If no service is specified, all startup items will be acted on; otherwise, only the item pro- viding the service, any items it requires, or any items that depend on it will be acted on. During boot SystemStarter is invoked by launchd(8) and is responsible for starting all startup items in an order that satisfies each item's requirements. ACTIONS
start start all items, or start the item that provides the specified service and all items providing services it requires. stop stop all items, or stop the item that provides the specified service and all items that depend on it. restart restart all items, or restart the item providing the specified service. OPTIONS
-g (ignored) -v verbose (text mode) startup -x (ignored) -r (ignored) -d print debugging output -D print debugging output and dependencies -q be quiet (disable debugging output) -n don't actually perform action on items (no-run mode) NOTES
Unless an explicit call to ConsoleMessage is made, SystemStarter examines the exit status of the startup item scripts to determine the suc- cess or failure of the services provided by that script. FILES
/Library/StartupItems/ User-installed startup items. /System/Library/StartupItems/ System-provided startup items. SEE ALSO
ConsoleMessage(8), launchd(8), launchd.plist(5), rc(8) HISTORY
The SystemStarter utility appeared in Darwin 1.0 and was extended in Darwin 6.0 to support partial startup and interprocess communication. SystemStarter was deprecated by launchd(8) in Darwin 8.0. Darwin April 12, 2002 Darwin