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author | Matt Strapp <matt@mattstrapp.net> | 2022-05-24 11:18:46 -0500 |
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committer | Matt Strapp <matt@mattstrapp.net> | 2022-05-24 11:19:55 -0500 |
commit | 7a73162607544204032aa66cce755daf21edebda (patch) | |
tree | 58578e01f15f34a855d99c32898db9d7a1603e67 /OLD/csci4061/100520_breakout | |
parent | do some stuff (diff) | |
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Graduate
Signed-off-by: Matt Strapp <matt@mattstrapp.net>
Diffstat (limited to 'OLD/csci4061/100520_breakout')
-rw-r--r-- | OLD/csci4061/100520_breakout/exercise.c | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/OLD/csci4061/100520_breakout/exercise.c b/OLD/csci4061/100520_breakout/exercise.c deleted file mode 100644 index 6d560d5..0000000 --- a/OLD/csci4061/100520_breakout/exercise.c +++ /dev/null @@ -1,47 +0,0 @@ -/* -* Recitation Section Number: -* Breakout Number: -* Member Name -* Member Name -* Member Name -* Member Name -*/ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <errno.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <string.h> -#define BUFSIZE 20 -#define PERM 0644 -int main(int argc, char *argv[]) { - int infile; char buffer[BUFSIZE]; - // create/open a file named write.txt - infile = open("write.txt", O_CREAT | O_RDWR | O_TRUNC, PERM); - // write hello world to write.txtS - write(infile, "hello world\n", 12); - // spawn a child process and use this child process to reroute stdout to write.txt - pid_t pid = fork(); - if (!pid) { - dup2(infile, 1); - } - // print pid - printf("Process %d\n", pid); - - // use the child process spawned previously to read the contents from write.txt, restore output to stdout - // and then prints the contents of write.txt to stdout. - if (!pid) { - read(infile, buffer, 20); - int stdout = open("/dev/tty", O_WRONLY); - dup2(1, stdout); - printf("%s\n", buffer); - return 0; - } - // print pid - printf("%d\n", pid); - // close the file write.txt - close(infile); - return 0; -}
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