actually it is a little more complicated then my simple example, but
basically by the time the background process &calc finishes my page
has loaded, so I have to keep refreshing the page until &calc() finishes.
The reason for this is, once &calc enters values
into database, then final page can be reloaded only once instead of
multiple times.
Obviously, I will have to run it in a
or
something like that. When &calc() finishes reload page once.
Of course, as a CGI script is executed once for each HTTP request, you must keep the process ID you are monitoring somewhere, say on the filesystem or session.
Its funny none of the perl books I have had anything on waitpid. I had to go to the Stevens book, but waitpid is the solution I came up with too.
.
It works good, but still looking for a way to improve. I may have to use AJAX or something to get rid of reloads.
Hi,
I have written a menu driven shell script in which as per the choice, I run the another script on background.
For eg:
1. get info
2)process info
3)modify info
All the operations have different scripts which i schedule in background using &.
However I wish to display the error... (0 Replies)
Hi,
I want to put the following code as a parallel or background process
The program is as below:
$n=10; #Count of files to be created.
for($j=0;$j<=$n;$j++) {
open(FH,">files_$j.txt") || warn "cannot create a file\n";
{
print FH "count of file: $j\n"; #Sample data to be written. just... (5 Replies)
Hi,
I am using net::ftp for transferring files now i am trying in the same Linux server as a result ftp is very fast but if the server is other location (remote) then the file transferred will be time consuming.
So i want try putting FTP part as a background process. I am unaware how to do... (5 Replies)
What I need to learn is how to use a script that launches background processes, and then kills those processes as needed.
The script successfully launches the script. But how do I check to see if the job exists before I kill it?
I know my problem is mostly failure to understand parameter... (4 Replies)
I need to submit a script that will continue to run after logging out and after a reboot or shutdown.
I entered the following: nohup script &
The script continues to run in the background after logging off the system but is killed after a reboot or shutdown. Any help would be greatly... (1 Reply)
Hi,
I have a query about processing and running Perl program at the background.
I have HTML file called Userform.html which accepts input from the user. As soon as input is given the contol goes to get.cgi (get.cgi does some processing and computing tasks).
Actually get .cgi takes more... (0 Replies)
i gave a copy process in the background( to copy around 100GB) , while in progress, the session got terminated. when i relogged in and checked the destination folder the copying was in progress... how could it happen(copying) when the shell terminates??? :rolleyes: (2 Replies)
Hello all,
How do I start a background process and save the process id to a file on my system. For example %wait 5 & will execute and print the process id. I can't figure out how to get it to a file. I've tried: > filename 0>filename 1>filename.
Any assistance is most appreciated.
Thanks,
Jim... (10 Replies)