50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* test.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jhalford <jack@crans.org> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2016/11/27 21:15:49 by jhalford #+# #+# */
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/* Updated: 2016/11/27 23:50:57 by jhalford ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "libft/includes/libft.h"
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extern char **environ;
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#define PIPE_READ 0
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#define PIPE_WRITE 1
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#define STDIN 0
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#define STDOUT 1
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int main(void)
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{
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pid_t pid;
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int fds[2];
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pipe(fds);
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if ((pid = fork()) == 0)
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{
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/* child */
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dup2(fds[PIPE_WRITE], STDOUT);
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/* close(fds[PIPE_READ]); */
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/* close(fds[PIPE_WRITE]); */
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execv("/bin/ls", (char*[2]){"/bin/ls"});
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}
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else
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wait(NULL);
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close(fds[PIPE_WRITE]);
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if ((pid = fork()) == 0)
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{
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/* parent */
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dup2(fds[PIPE_READ], STDIN);
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/* close(fds[PIPE_READ]); */
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execv("/usr/bin/wc", (char*[2]){"/usr/bin/wc", "-l"});
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}
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else
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wait(NULL);
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close(fds[PIPE_WRITE]);
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close(fds[PIPE_READ]);
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}
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