Thanks Travis, Shlomi , Shawn, Luca, and James. The program pauses i.e does not run further when I press Cntrl –S When I press Ctrl-Q again, the program resumes excactly where it was when I hit cntrl-q. It is not a deamon, but a simple automation program and it is single threaded , goes on sequentially. I need to try out the programs that you suggested . However I don’t accept that the program will be running in the background when I press Ctrl+s. In the below example, once I start the program after seeing “i is 5” on the output, if I do ctrl+s, the output resumes at I is 6 even if I press ctrl+q after a minute or so. I expect it to print out till say i=65 during the 1 minute and I see the output all at once when I do ctrl+q I tried out a simple shell program and it also seems to be the same.(as the perl one) Is it that if the program is multi threaded or something like that that the program will keep to print even though I have paused the screen? So, when I press ctrl+q again all the buffered output is emptied out first and then the current output from the program. May be!!
Sorry if it is out of topic for this forum. From: Travis Thornhill [mailto:madslashers2...@yahoo.com] Sent: 06 June 2013 17:04 To: Nemana, Satya Cc: beginners@perl.org Subject: Re: how to make perl program run continue when i press control+s to pause screen output On Jun 5, 2013, at 4:18, "Nemana, Satya" <snem...@sonusnet.com<mailto:snem...@sonusnet.com>> wrote: Hi I am having a slight difficulty in getting this accomplished. When my perl program keeps running, I sometimes need to pause the screen output and check some things on the output. But, I want my program to still keep running while I pause the screen. (using ctrl+s on putty) But the program also is pausing.(I tested this with a simple program which prints number from 1-100 sleeping 1 second after each print , but the main program I am trying to get this working is much complex, so will try things here first before modifying the original program) Test Code : use strict; use warnings; for (my $i=1; $i <= 200; $i++) { print "\ni is $i"; sleep 1; } Please, could someone throw some light on which areas of perl to look at for this. I am not looking for a program, but specific areas where I have to do the reading. I will come back with the program once I can make out what to do for any suggestions. Thanks, Satya Your program should still be running, and it should still accept keyboard input. After ctrl-s, you just can't see any input/output. Try ctrl-q to recover.
