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Redirect bg process output to within the script

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# 1  
Old 08-20-2008
Redirect bg process output to within the script
Hi,

I have a process running in the background, which throws up some output to the terminal when I run my script. How can I read this output from my script?

Thank you.
# 2  
Old 08-20-2008
redirect it to /dev/null
# 3  
Old 08-20-2008
Thanks, vidyadhar85...But,from what I understand, I can redirect the output of my background process to /dev/null, but that is not what I want to do. I have a background process, and it throws up something when my script sends it a signal....can I still read it from my script? I tried the

while read lines
do .....
done

but, it does not seem to work.....
# 4  
Old 08-20-2008
In unix there is a special file type called a "named pipe" (look it up). So you create one of these named pipes (before running your processes). Then you take the output of your BG process and re-direct it to the named pipe. The script can then read the named pipe to pick up the BG output...
# 5  
Old 08-20-2008
Thanks quine. It worked. In my process I write:

mkfifo("xyz",0666);
int fd;
char *c = "Info written";
fd = open(xyz,O_WRONLY);
write(fd,c,strlen(c));
close(fd);

and in my script I read xyz.
# 6  
Old 08-21-2008
Glad it helped. Now you'll know about named pipes from now on :-)
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