Pipe the output of program to the input of another.

int main()
{
int pipe_fds[2];
int stdin_save, stdout_save;

if (pipe(pipe_fds) < 0)
return -1;

/* Duplicate stdin and stdout so we can restore them later. */
stdin_save = dup(STDIN_FILENO);
stdout_save = dup(STDOUT_FILENO);

/* Make the write end of the pipe stdout. */
dup2(pipe_fds[1], STDOUT_FILENO);

/* Run the program. Its output will be written to the pipe. */
spawnl(P_WAIT, "/dev/env/DJDIR/bin/ls.exe", "ls.exe", NULL);

/* Close the write end of the pipe. */
close(pipe_fds[1]);

/* Restore stdout. */
dup2(stdout_save, STDOUT_FILENO);

/* Make the read end of the pipe stdin. */
dup2(pipe_fds[0], STDIN_FILENO);

/* Run another program. Its input will come from the output of the
first program. */
spawnl(P_WAIT, "/dev/env/DJDIR/bin/less.exe", "less.exe", "-E", NULL);

/* Close the read end of the pipe. */
close(pipe_fds[0]);

/* Restore stdin. */
dup2(stdin_save, STDIN_FILENO);

return 0;
}

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History Of C..

In the beginning was Charles Babbage and his Analytical Engine, a machine
he built in 1822 that could be programmed to carry out different computations.
Move forward more than 100 years, where the U.S. government in
1942 used concepts from Babbage’s engine to create the ENIAC, the first
modern computer.
Meanwhile, over at the AT&T Bell Labs, in 1972 Dennis Ritchie was working
with two languages: B (for Bell) and BCPL (Basic Combined Programming
Language). Inspired by Pascal, Mr. Ritchie developed the C programming
language.

My 1st Program...


#include
#include
void main ()
{
clrscr ();
printf ("\n\n\n\n");
printf ("\t\t\t*******Pankaj *******\n");
printf ("\t\t\t********************************\n");
printf ("\t\t\t\"Life is Good...\"\n");
printf ("\t\t\t********************************");
getch ();
}

Next Step...


#include
#include

void main ()
{
clrscr ();
printf ("\n\n\n\n\n\n\n\n");
printf ("\t\t\t --------------------------- \n\n");

printf ("\t\t\t | IGCT, Info Computers, INDIA | \n\n");
printf ("\t\t\t --------------------------- ");

getch ();

}

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