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Full Discussion: stdin redirection
Top Forums UNIX for Dummies Questions & Answers stdin redirection Post 302401165 by cypleen on Friday 5th of March 2010 04:53:22 AM
Old 03-05-2010
Thank you Binlib for your answer.
But my problem is not solved. I added this in my code:

Code:
int    pFile = -1;
pFile = open("/dev/tty",O_RDONLY);
if (pFile == -1)
 printf("échec sur ouverture /dev/tty");
else
 printf("ouverture /dev/tty réussie");
scanf("%s", command);
close (pFile);

When I execute the code, after this, stdin stays assigned to the keyboard. I would like that it returns to file1.
So, if you can explain to me how reassign stdin to file1, I think that it will be won if i use lseek before and after opened /dev/tty.
Last edited by Franklin52; 03-05-2010 at 06:05 AM.. Reason: Please use code tags!
 

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LEARN ABOUT MOJAVE

esdcat

esdcat(1)                                                          User Commands                                                         esdcat(1)

NAME

       esdcat - play a sound file from stdin

SYNOPSIS

       esdcat [-s hostname:port] [-b] [-h] [-m] [-r freq]

DESCRIPTION

       The esdcat application pipes data from stdin to the sound device, using the Enlightened Sound Daemon (esd).

OPTIONS

       The following options are supported:

       -s hostname:portContact the esd server on hostname at port.

       -b              Specify that the output should be in 8-bit format. By default, the output is in 16-bit format.

       -h              Display help text, and exit.

       -m              Specify that the output should be in mono format. By default, the output is in stereo format.

       -r freq         Specify that the output rate should be set to freq. By default, the output rate is set to 44.1 kHz.

EXAMPLES

       Example 1: Playing a sound file "beep" from stdin

       example% esdcat < beep

EXIT STATUS

       The following exit values are returned:

       0        Application exited successfully

       >0       Application exited with failure

FILES

       The following files are used by this application:

       /usr/bin/esdcat         Executable for Enlightened Sound Daemon sound piper

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWgnome-audio              |
       +-----------------------------+-----------------------------+
       |Interface stability          |External                     |
       +-----------------------------+-----------------------------+

SEE ALSO

       esdplay(1), esdrec(1), esdsample(1), esdmon(1), esdctl(1), esd-config(1), libesd(3)

NOTES

       Written by Brian Cameron, Sun Microsystems  Inc., 2003.

SunOS 5.10                                                          7 Jan 2003                                                           esdcat(1)
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