1. UNIX for Dummies Questions & Answers

Hello, Can any body give example of using Unix Signals. What I want to do is I am running a sql query in a shell script I want, if sql query exceed the defined no. of seconds limit, then I would like to kill the process. I know this can be done thru Unix Signal Handling but I do not know... (8 Replies)

2. UNIX for Advanced & Expert Users

It is required to trap the signal send to a daemon process before rebooting a unix server. Suppose a script abc.ksh is running in the server as daemon. Before rebooting the server, the unix admin kills all the daemon processes. It is not known to me how admin kills the processes; I mean by which... (9 Replies)

3. Shell Programming and Scripting

I am trying to develop a script that will properly handle kill signals particularly kill -2. I have program (_progres) that properly receives the signal if I run it from the command line directly: _progres -T /tmp -p /home/mejones/signal.p -b 2>&1 & If I try to put it in a script (i.e.... (2 Replies)

4. Programming

We have written a deamon which have many threads. We are registering for the SIGTERM and trying to close main thread in this signal handling. Actually these are running on Mac OS X ( BSD unix). When we are unloading the deamon with command launchctl, it's sending SIGTERM signal to our process... (1 Reply)

5. Programming

I'm writing a function right now, and I want to set an alarm to avoid a timeout, here's the general idea of my code: int amt = -2; alarm(10); amt = read(fd, &t->buf, TASKBUFSIZ - tailpos); //do a read when the alarm goes off, i want to check the value of "amt" ... (1 Reply)

6. Programming

Hi all, Sorry about the title,at first i decided to ask a problem about the signal mechanism,however,i'm now figured it out.Sorry to forget modify the title:wall:.I had a small problem that if i use the code which is commented,the code would get a segment fault,while the above code NOT.what's... (4 Replies)

7. Shell Programming and Scripting

Is it possible to continue after signal is caught and control goes to function specified in the trap statement? (3 Replies)