Login or Register to Ask a Question and Join Our Community


UNIX for Dummies Questions & Answers

SIGINT issue

 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers SIGINT issue
# 1  
Old 02-29-2012
SIGINT issue
May i know what are the possible causes for SIGINT other than ctrl-c?

Thanks
# 2  
Old 02-29-2012
when a user hits the interrupt key, the kernel sends a SIGINT to all processes associated with a terminal... Usually when you type ctrl-c... but there is nothing stopping you to define another key, look at the stty man pages...
More reading:
Proper handling of SIGINT/SIGQUIT
# 3  
Old 02-29-2012
Thanks.Is there any way to run the process such a way that it will avoid SIGINT?(in order to avoid hangup, we are using nohup.).Similarly is there any solution?
Thanks
# 4  
Old 02-29-2012
Other sources of SIGINT
Code:
kill -s SIGINT <pid>
kill -2 <pid>

# 5  
Old 02-29-2012
Just thoughts:
Try to launch a program using at... it will not have a terminal associated with it...
# 6  
Old 02-29-2012
@pandeesh
Please post your Operating System and version and what Shell you are using.

Please post a sample "nohup" line and make it clear whether you want to run the script in foreground or background.

Are you trying to stop somebody who types ctrl/c at the keyboard? If so, just disable the function in their profile.
Code:
stty intr ""

# 7  
Old 02-29-2012
My operating system is AIX 6.1. the shell is korn shell.. And so far i have run the process in foreground.
Code:
./scriptname

. I will try to run in background (and also with nohup)and update the status.
Thanks
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Always pass SIGINT in ksh

The following command will run and wait for input from the user. /usr/sap/SAP/webdisp/wdispmon pf=/usr/sap/SAP/webdisp/profile What I would like to do is (in one command): - Add the above line to a ksh script - Receive the output - and send a SIGINT I have seen many posts on how to... (3 Replies)
Discussion started by: sapsid
3 Replies

2. Shell Programming and Scripting

Trapping SIGINT after restarting program.

Tried to add a function to my control_c interrupt here. It works but has one little bug. If the user selects to run the function instead of exiting, the program restarts itself without forking as it should. However, after that control_c no longer works again. I wanted to allow the user to run... (1 Reply)
Discussion started by: Azrael
1 Replies

3. Shell Programming and Scripting

Sh script sends SIGINT to a process

Hello, What I want to accomplish is this: I have made a very simple script that runs 2 commands, polipo proxy and tor. The script runs successfully and the output of tor is visible to the screen. I am using the trap command in order to catch the ctrl+c button combo in order to stop polipo... (5 Replies)
Discussion started by: redsolja
5 Replies

4. Shell Programming and Scripting

Strange SIGINT propagation between Parent/Child sh scripts

Good day, I am trying to add signal handling capabilities to some of my scripts. Unfortunately, I am having some difficulty with the manner in which signals are propagated between parent/child processes. Consider the following example: I have the following "parent" script: #!/usr/bin/sh... (5 Replies)
Discussion started by: danie.ludick
5 Replies

5. Programming

why multiple SIGINT raises when i hit C-c

hi, in my application, i have set up to capture SIGINT and execute a handler.the problem is whenever i hit C-c, multiple SIGINT are sent to the application.I have blocked the SIGINT right after catching the first one but it is unsuccessful.Here is what i do : jmp_buf main_loop; int... (1 Reply)
Discussion started by: Sedighzadeh
1 Replies

6. Shell Programming and Scripting

Intercepting SIGINT in a bash script

I've written a bash script which captures video with DVgrab. Because of the nature of the tapes that I am digitizing, sometimes I want to quit capturing before the time that I set for DVgrab. When this is the case I press Ctrl-c and DVgrab exits cleanly, my problem is that there is additional... (5 Replies)
Discussion started by: Starcast
5 Replies

7. Programming

[C] fgets problem with SIGINT singlal!!!

Hi all, I have this method to read a string from a STDIN: void readLine(char* inputBuffer){ fgets (inputBuffer, MAX_LINE, stdin); fflush(stdin); /* remove '\n' char from string */ if(strlen(inputBuffer) != 0) inputBuffer = '\0'; } All work fine but if i... (1 Reply)
Discussion started by: hurricane86
1 Replies

8. Programming

Problem with handling SIGINT

For a program I am designing, which involves handling the keyboard input Ctrl^c (SIGINT), it is taking ages for the program to actually recognise and perform the corresponding action whenever I run it and hit Ctrl^C at the CL. I have to do at least 3 Ctrl^Cs before the program will actually... (3 Replies)
Discussion started by: JamesGoh
3 Replies

9. Shell Programming and Scripting

Unix Arithmatic operation issue , datatype issue

Hi, I have a shell scripting. This will take 7 digit number in each line and add 7 digit number with next subsequent lines ( normal addition ). Eg: 0000001 0000220 0001235 0000022 0000023 ........... ......... ........ Like this i am having around 1500000 records. After adding... (23 Replies)
Discussion started by: thambi
23 Replies

10. Programming

Cannot catch SIGINT while serial break condition occurs

I setup termios structure with IGNBRK is not set and BRKINT is set. To allow the process to receive signals I call: fcntl(fd, F_SETOWN, getpid()); I have made a signal handler to catch all signals. I can catch SIGINT when pressing ctrl+c but when I send break signal over serial then it cannot... (13 Replies)
Discussion started by: gzz
13 Replies
Login or Register to Ask a Question