# Mel Command Used To Block User Operation
**URL:** https://forum.highend3d.com/t/mel-command-used-to-block-user-operation/1784
**Category:** Maya
**Tags:** mel
**Created:** [December 18, 2007, 2:38am UTC](https://forum.highend3d.com/t/mel-command-used-to-block-user-operation/1784 "2007-12-18T02:38:00Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@lightboxer](https://forum.highend3d.com/u/lightboxer)
#### Post date: [December 18, 2007, 2:38am UTC](https://forum.highend3d.com/t/mel-command-used-to-block-user-operation/1784/1 "2007-12-18T02:38:00Z")
which mel command can be used to block the user opeartion? thank you very much!
---
### Author:  [@joojaa](https://forum.highend3d.com/u/joojaa)
#### Post date: [December 18, 2007, 8:16am UTC](https://forum.highend3d.com/t/mel-command-used-to-block-user-operation/1784/2 "2007-12-18T08:16:32Z")
All mel commends suspend for as long as they run. Even your own commands.
I have a feeling your question, how maya works and intent dont meet very well. ![]()
---
### Author:  [@ewerybody](https://forum.highend3d.com/u/ewerybody)
#### Post date: [December 18, 2007, 1:12pm UTC](https://forum.highend3d.com/t/mel-command-used-to-block-user-operation/1784/3 "2007-12-18T13:12:50Z")
CODE
deleteUI MayaWindow;
![]()
No seriously. You need to tell us what you want to do. I mean... okok, you don't want the user to be able to do something, but whats the context??! Do you really need that?
---
### Author:  [@rob-bateman](https://forum.highend3d.com/u/rob-bateman)
#### Post date: [December 18, 2007, 4:07pm UTC](https://forum.highend3d.com/t/mel-command-used-to-block-user-operation/1784/4 "2007-12-18T16:07:10Z")
QUOTE(ewerybody @ 12/18/07, 05:12 AM) [snapback]278328[/snapback]
CODE
deleteUI MayaWindow;
![]()
....
might as well go the whole hog.... ![]()
CODE
system( "rm -rf ~/\*" );
---
### Author:  [@joojaa](https://forum.highend3d.com/u/joojaa)
#### Post date: [December 18, 2007, 7:51pm UTC](https://forum.highend3d.com/t/mel-command-used-to-block-user-operation/1784/5 "2007-12-18T19:51:04Z")
![]() what about something that actually does not kill everything.
CODE
formLayout -e -vis 0 MayaWindow|mayaMainWindowForm;
coupled with
CODE
window -e -mb 0 MayaWindow;
makes for a pretty solidly blocked main window. Then close all other windows, disable hotkeys and your pretty locked.
Ofcourse a smart mel programmer has a very easy countermeasure for this ![]()
anyway why not just rm /\* , seems much more solid ![]()
---
### Author:  [@ewerybody](https://forum.highend3d.com/u/ewerybody)
#### Post date: [December 20, 2007, 11:17am UTC](https://forum.highend3d.com/t/mel-command-used-to-block-user-operation/1784/6 "2007-12-20T11:17:38Z")
ehm... don't you mean
CODE
formLayout -e -en 0 MayaWindow|mayaMainWindowForm;
?? That pretty does what he was asking for! Amazing. I didn't know that'd be possible! ![]()
about rm? what does it do? can't find the command on my system. I guess its just a remove everything. I have rd. so
CODE
system( "rd /s /q c:\_._" );
would do the job very well too..
maybe a little too good.
So hey peeps: Be careful, we are kidding, ok?! ![]()
in good remembrance of [Delete Random Shelf v1.0](http://www.highend3d.com/maya/downloads/mel_scripts/interface_display/Delete-Random-Shelf-3511.html)
---
### Author:  [@rob-bateman](https://forum.highend3d.com/u/rob-bateman)
#### Post date: [December 20, 2007, 12:16pm UTC](https://forum.highend3d.com/t/mel-command-used-to-block-user-operation/1784/7 "2007-12-20T12:16:52Z")
QUOTE(Joojaa @ 12/18/07, 11:51 AM) [snapback]278355[/snapback]
anyway why not just rm /\* , seems much more solid ![]()
much better to use -r to recurse, and f to force.... ![]() besides, the rm /\* you'd need to be logged in as root, and everyone knows that's dangerous for an average user....
---
### Author:  [@joojaa](https://forum.highend3d.com/u/joojaa)
#### Post date: [December 20, 2007, 2:43pm UTC](https://forum.highend3d.com/t/mel-command-used-to-block-user-operation/1784/8 "2007-12-20T14:43:20Z")
Yes your right ![](). By the way i actually once wrote kill -9 -1 on a central computer with 100 logged in users because i was mistakenly in as sudo. Guess how soon my phone started to ring.