how to pass "ctrl+c" to terminal

ashish061291 · 03-06-2012, 11:57 PM

Hi everyone,

I am executing "blktrace" on my /dev/sda.
In my application i have made a GUI which lets user to choose when he wants to stop "blktrace" execution.

Now how can achieve it ??

Also how can i pass "Ctrl+C" to terminal from a perl script ??

Kindly help..

catkin · 03-07-2012, 12:24 AM

Assuming you are running blktrace from the Perl script, you could send a signal to the blktrace process. SIGINT is the equivalent of using Ctrl+C in a terminal.

ashish061291 · 03-07-2012, 12:29 AM

Ya i got that.
Thanks a ton

But actually I am new to Ubuntu so can u explain in detail as in how can I achieve it ??

pgpython · 03-07-2012, 03:09 AM

according to the man page on kill SIGINT is signal num 2 so in your perl script you would simply do kill -2 <process id>

ashish061291 · 03-07-2012, 03:45 AM

But as i run again and again its pid changes every time.

I can find the pid by using system("pidof -s blktrace");, but then how can i use this information further to stop blktrace execution.

catkin · 03-07-2012, 07:07 AM

Quote:

Originally Posted by ashish061291

I can find the pid by using system("pidof -s blktrace");, but then how can i use this information further to stop blktrace execution.

I don't Perl but something like

Code:

@blktrace_PID = `system("pidof -s blktrace");`

The ` characters are backquotes.