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UNIX for Dummies Questions & Answers
trap command
Post 302511841 by Straitsfan on Thursday 7th of April 2011 06:07:11 PM
04-07-2011
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10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I'm using the trap command to capture any signals received whilst my script is running.
How's the best way of writing the signal and any other error messages to a file/error log' without having to type '2>$1' on the command line after the script name?
Cheers (3 Replies)
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i have the following script that displays the current time until the user presses CTR + c.... but it does not work properly....
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Dear All
could you please explain me what does the trap command do and how I can write a program which can work as a trap command(in C Language). (1 Reply)
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Could anybody tell me what the trap command does and how it performs the action it does. I had read the trap manual page but it is too concise that nothing is clear about it. Please tell how it works. (1 Reply)
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Hi,
I would like to know the use of TRAP command. I am very new to the UNIX environment. I have just started learning the basic. So please teach me in a very simple way to understand.
Also i would like to know the use of following command:
trap 'dialog --msgbox "Script Aborted1" 6 50 ;... (2 Replies)
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Hi folks,
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Hello experts!
I need to know the use of trap command please
In one of our program we have trap "rm -f temp1 ; exit 1" 1 2 15 0
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as
rm -f temp1
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dear all;
I can't under stand what does "trap" command do:
for example see below:
trap "echo; echo no interrupts >&2; sleep 3" 2 3 15
Plz , can any body explain the action of this command?
BR (3 Replies)
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Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
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Hi Folks -
For some reason, my trap command is not working. It's placed just prior to a normal exit:
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#::-- Script Name: LCM_Backup.sh
#::
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LEARN ABOUT MOJAVE
glutsetcursor
glutSetCursor(3GLUT) GLUT glutSetCursor(3GLUT) NAME
glutSetCursor - changes the cursor image of the current window. SYNTAX
#include <GLUT/glut.h> void glutSetCursor(int cursor); ARGUMENTS
cursor Name of cursor image to change to. Possible values follow: GLUT_CURSOR_RIGHT_ARROW Arrow pointing up and to the right. GLUT_CURSOR_LEFT_ARROW Arrow pointing up and to the left. GLUT_CURSOR_INFO Pointing hand. GLUT_CURSOR_DESTROY Skull & cross bones. GLUT_CURSOR_HELP Question mark. GLUT_CURSOR_CYCLE Arrows rotating in a circle. GLUT_CURSOR_SPRAY Spray can. GLUT_CURSOR_WAIT Wrist watch. GLUT_CURSOR_TEXT Insertion point cursor for text. GLUT_CURSOR_CROSSHAIR Simple cross-hair. GLUT_CURSOR_UP_DOWN Bi-directional pointing up & down. GLUT_CURSOR_LEFT_RIGHT Bi-directional pointing left & right. GLUT_CURSOR_TOP_SIDE Arrow pointing to top side. GLUT_CURSOR_BOTTOM_SIDE Arrow pointing to bottom side. GLUT_CURSOR_LEFT_SIDE Arrow pointing to left side. GLUT_CURSOR_RIGHT_SIDE Arrow pointing to right side. GLUT_CURSOR_TOP_LEFT_CORNER Arrow pointing to top-left corner. GLUT_CURSOR_TOP_RIGHT_CORNER Arrow pointing to top-right corner. GLUT_CURSOR_BOTTOM_RIGHT_CORNER Arrow pointing to bottom-left corner. GLUT_CURSOR_BOTTOM_LEFT_CORNER Arrow pointing to bottom-right corner. GLUT_CURSOR_FULL_CROSSHAIR Full-screen cross-hair cursor (if possible, otherwise GLUT_CURSOR_CROSSHAIR). GLUT_CURSOR_NONE Invisible cursor. GLUT_CURSOR_INHERIT Use parent's cursor. DESCRIPTION
glutSetCursor changes the cursor image of the current window. Each call requests the window system change the cursor appropriately. The cursor image when a window is created is GLUT_CURSOR_INHERIT. The exact cursor images used are implementation dependent. The intent is for the image to convey the meaning of the cursor name. For a top-level window, GLUT_CURSOR_INHERIT uses the default window system cursor. X IMPLEMENTATION NOTES
GLUT for X uses SGI's _SGI_CROSSHAIR_CURSOR convention to access a full-screen cross-hair cursor if possible. SEE ALSO
glutCreateWindow, glutCreateSubWindow AUTHOR
Mark J. Kilgard (mjk@nvidia.com) GLUT
3.7 glutSetCursor(3GLUT)