10-17-2001
Need help with trap
My problem is this:
I need to have a catch-all for my processes. An example would be, using a trap, in the parent, to catch any non-0 exit or invalid command (a way to catch core dumps would be cool, too) in not only the parent, but it's children and they're children. Not only that, but I also have to be able to have the same functionalith on anything that the parent or children dot in (functions containted in seperate files). Currently I can only get the trap to operate correctly on one level - parent/child. Also, it doesn't seem like I can create some sort of trap function in a seperate trapfuncs file and have it work. I dot it in and it never sees anything go wrong.
I'd really appreciate any help I could get on this. I'm stuck and can't figure this out for the life of me. I know one of gurus out there must have the answer. P.S. I'm open to any alternatives that don't mean putting blocks of code in every sinlge script and file.
Thanks!
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I'd like to use "trap" command on my unix machine sunOS 5.7.
But somehow when I do "which trap" command, it's no where to be found.
Any one knows how I can get it installed?
Thanks!! (9 Replies)
Discussion started by: whatisthis
9 Replies
2. Shell Programming and Scripting
Hello all,
I'm hoping to get a little insight from some of the wily veterans amongst you.
I've written a script to check for new outgoing files to our vendors located on our ssl server. It seems to be working ok, but the final question here, will be one of logic, and/or a better way to... (4 Replies)
Discussion started by: mph
4 Replies
3. UNIX for Advanced & Expert Users
Hi
Our problem is knowing:
What is the "best" way of simulating a TRAP for ERR within a function, since we know this will not work directly with ksh93 and aix5. How can we save the error encountered in the function and then deal with it in the calling script?
Thanks! (3 Replies)
Discussion started by: theteeth07
3 Replies
4. Shell Programming and Scripting
Hi All
"Identify the behavior of traps, mechanism to implement traps in the snmp framework"
What does it mean?? Can anybody explain.. Whats this Trap??
Thanx in Advance. (1 Reply)
Discussion started by: jeenat
1 Replies
5. Shell Programming and Scripting
I have a script
#!/bin/ksh
trap cleanup 20
cleanup()
{
cat $t.log
echo Caught
exit 1
}
if ;then
echo Found >>t.log
exit 20
else
echo Not found >>t.log
exit 20
fi (5 Replies)
Discussion started by: thana
5 Replies
6. Shell Programming and Scripting
Hi folks,
I have tried to add some trap detection in the below script....this script is used to monitor database activities...in a rather awkward way :rolleyes:....
The idea behind adding trap is that....this script creates lots of temporary files in the running folder to store the count... (1 Reply)
Discussion started by: frozensmilz
1 Replies
7. Shell Programming and Scripting
Hi
At the beginning of my script, i will create a file and at the end of the script i will delete that.
But i got to delete the file even if the process is forcefully killed, or server is rebooted...
I think i can make use of trap signal, but couldnt figure out how and where to use in my... (4 Replies)
Discussion started by: vasuarjula
4 Replies
8. Shell Programming and Scripting
trap "" 1 2 3
Thanks,
-dog (1 Reply)
Discussion started by: landog
1 Replies
9. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
That is the last reply I received from my instructor, and I'm looking for some alternatives.
When using... (2 Replies)
Discussion started by: newuser45
2 Replies
10. Shell Programming and Scripting
Hi Ppl,
Need help
$ cat trap.sh
#!/bin/bash
trap cleanup 1 2 3 15
cleanup()
{
echo “I was running \”$BASH_COMMAND\” when you interrupted me.”
echo “Quitting.”
exit 1
}
while :
do
echo -en “hello. “
sleep 1 (3 Replies)
Discussion started by: heman96
3 Replies
LEARN ABOUT HPUX
xtunmanageb
XtUnmanageChildren() XtUnmanageChildren()
Name
XtUnmanageChildren - remove a list of children from a parent widget's managed list.
Synopsis
void XtUnmanageChildren(children, num_children)
WidgetList children;
Cardinal num_children;
Inputs
children Specifies an array of child widgets. Each child must be of class RectObj or any subclass thereof.
num_children
Specifies the number of elements in children.
Description
XtUnmanageChildren() unmaps the specified widgets and removes them from their parent's geometry management. The widgets will disappear
from the screen, and (depending on its parent) may no longer have screen space allocated for them.
Each of the widgets in the children array must have the same parent.
See the "Algorithm" section below for full details of the widget unmanagement procedure.
Usage
Unmanaging widgets is the usual method for temporarily making them invisible. They can be re-managed with XtManageChildren().
You can unmap a widget, but leave it under geometry management by calling XtUnmapWidget(). You can destroy a widget's window without
destroying the widget by calling XtUnrealizeWidget(). You can destroy a widget completely with XtDestroyWidget().
If you are only going to unmanage a single widget, it is more convenient to call XtUnmanageChild(). It is often more convenient to call
XtUnmanageChild() several times than it is to declare and initialize an array of widgets to pass to XtUnmanageChildren(). Calling XtUnman-
ageChildren() is more efficient, however, because it only calls the parent's change_managed() method once.
Algorithm
XtUnmanageChildren() performs the following:
o Issues an error if the children do not all have the same parent or if the parent is not a subclass of compositeWidgetClass.
o Returns immediately if the common parent is being destroyed; otherwise, for each unique child on the list, XtUnmanageChildren() performs
the following:
- Ignores the child if it already is unmanaged or is being destroyed.
- Otherwise, if the child is realized, it makes it nonvisible by unmapping it.
o Calls the change_managed() method of the widgets' parent if the parent is realized.
Structures
The WidgetList type is simply an array of widgets:
typedef Widget *WidgetList;
See Also
XtDestroyWidget(1), XtIsManaged(1), XtManageChild(1), XtManageChildren(1), XtUnmanageChild(1).
Xt - Geometry Management XtUnmanageChildren()