$ rm -rf temp_testdir
$ mkdir temp_testdir
$ cd temp_testdir

< #include <unistd.h>
< #include <stdlib.h>
< #include <stdio.h>
< #include <sys/types.h>
< #include <sys/stat.h>
< #include <fcntl.h>
< 
< #ifdef __MINGW32__
< #define sleep	_sleep
< #endif
< 		     
< int main() {
< 	char buff[2048];
< 	char* p;
< 	int got;
< 	int in;
< 	int w;
<	int tgot = 0;
< 	
< 	sleep(1);
< 	
< 	if((in = open("tmp_fich",O_RDONLY|O_CREAT)) == -1){
< 		perror("Cannot open tmp_fich");
< 		exit(1);
< 	}
<	
< 	while (1) {
<		if((got = read(in,&buff,2048)) == -1)
<			perror("Error while reading");
<		else if(got == 0 && tgot != 0)
<			break; /* EOF */
<		
<		if(!got)
<			continue;			
<		
< 		p = buff;
<
<		tgot += got;
< 		
< 		while(got) {
< 			if((w = write(1, p , got)) < 0) {
< 				perror("Error while writing");
< 				exit(1);
< 			}	
< 			
< 			p += w;
< 			got -= w;
< 		}
< 	}
< 
< 	return 0;
< }
$ cat > delayed_cat.c

$ gcc -Wall -o delayed_cat delayed_cat.c

& ./delayed_cat 
> TOTO

< TOTO
$ cat > tmp_fich

$ sleep 2
$ cd ..
$ rm -rf temp_testdir