Hi all,

I am using text to speech program to read a text file..

As soon as i execute the command

flite -pw alice.txt

It speak out the alice.txt file and simultaneously prints the text which was read...Now i want this text i.e, the text printed on stdout to be redirected to a file..

This can be done easily with redirection...but my problem is, since alice.txt is big it takes long time to speak out and read it...only after completion of this process i am able to redirect it to a file...i want to read the stdout instantaneously and write it into a file...(while flite is writing to stdout at the same time i want to read and write it in to file)

I tried popen, redirection command..nothing was useful..

All comments are welcome...

Have you used the tee command? It allows you to send output to a file at the same time as stdout.

Hi,

Thanks for your reply,but the tee command just redirects the stdinput to the stdoutput or to a file...

I tried running the command "tee stdoutput.txt" as a child process and made parent to execute the command "flite -pw alice.txt"

When the parent was executing the flite command, it prints the alice.txt line by line to stdoutput..

But the tee command by the child is not capturing the stdoutput to stdoutput.txt

Any other way of writing the program???
Any other commands??

Please show your actual code -- it sounds to me as if you aren't using tee correctly.

Thanks for your reply...This is the program that i used to test the tee command...

#include <stdio.h>
int main()
{
int pid;
pid =fork();
if (pid ==0) //Executed by the child process
{
printf("\nChild process activated\n");
system("tee stdoutput.txt");
}
else //Executed by the parent process
{
printf("\nParent process activated\n");
system("flite -pw alice");
}
}

The tee command is better used at the shell level rather than being called from your application. The following will display the flite's normal output on stdout as well as writing it to stdoutput.txt:

Hi, thanks for your reply..

I tried your command.

flite -pw alice.txt | tee stdoutput.txt

I executed the above command in one terminal and opened another terminal where i opened stdoutput.txt...

vi stdoutput.txt

I am not able to see the output...

What happens is, only after completing the command flite -pw alice.txt, that is only after reading the entire file alice.txt and printing into stdout, the stdout is transferred to stdoutput.txt...

It is not like printing the output to stdoutput as well as to stdoutput.txt at the sametime...But i want the my stdoutput.txt to reflect changes at the same time when stdoutput is changing...the change should be instantaneous...

Is there any way??

In the 2nd terminal, use
tail -f stdoutput.txt
which should be better, but note there is always a certain amt of buffering going on in the background by the OS.
Incidentally, why 'instantaneously'? What's the rush?

Did the last suggestion work?

Your answer could be helpful to others w/ the same problem.