dup stdout
#include <unistd.h> ... int saved_stdout; ... /* Save current stdout for use later */ saved_stdout = dup(1); dup2(my_temporary_stdout_fd, 1); ... do ..., Here's my take on the problem; I removed fork() and pipe() both to compile natively on Windows ( gcc -g -std=c11 -Wall -c main.c && gcc main.o ...,The reason you get a "bad file descriptor" is that the garbage collector closes the stdout FD for you. Consider these two lines: sys.stdout = os.fdopen(1, 'w', ... , dup,dup2实现stdout重定向*/#include #include #include #include #include #include int main(void) int fd, tempfd; char buf[] = Am I in the stdout ..., #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <sys/stat.h> #include <fcntl.h> int main() int mypipe[2]; pipe(mypipe); int ..., You then restore the original stdout file handle, so when the data are actually ... dup(pfd); close(pfd); printf("This goes into file-n"); fflush(stdout); ..., I want to redirect stdout to a file ... and after I print something I want to ... You probably want to restore the original stdout after you've dup'd it to ..., int stdout_copy = dup(STDOUT_FILENO); dup2(nf, STDOUT_FILENO); ... stdout */ dup2(stdout_copy, STDOUT_FILENO); close(stdout_copy);., There are multiple issues: execl() does not return (except if there is an error), you need to fork() again or use e.g. system(). On execl the buffers ..., 創建STDOUT的描述符備份 oldstdout = dup(STDOUT); /* redirect standard output to DUMMY.FIL by duplicating the file handle onto the
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 dup stdout 相關參考資料
C restore stdout to terminal - Stack Overflow
#include <unistd.h> ... int saved_stdout; ... /* Save current stdout for use later */ saved_stdout = dup(1); dup2(my_temporary_stdout_fd, 1); ... do ... https://stackoverflow.com C stdout to file using dup - Stack Overflow
Here's my take on the problem; I removed fork() and pipe() both to compile natively on Windows ( gcc -g -std=c11 -Wall -c main.c && gcc main.o ... https://stackoverflow.com dup, dup2, tmpfile and stdout in python - Stack Overflow
The reason you get a "bad file descriptor" is that the garbage collector closes the stdout FD for you. Consider these two lines: sys.stdout = os.fdopen(1, 'w', ... https://stackoverflow.com dup,dup2实现stdout重定向- 码农 - CSDN博客
dup,dup2实现stdout重定向*/#include #include #include #include #include #include int main(void) int fd, tempfd; char buf[] = Am I in the stdout ... https://blog.csdn.net how to get back stdout after piping it with dup? - Stack Overflow
#include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <sys/stat.h> #include <fcntl.h> int main() int mypipe[2]; pipe(mypipe); int ... https://stackoverflow.com How to redirect stdout to a file and then restore stdout back ...
You then restore the original stdout file handle, so when the data are actually ... dup(pfd); close(pfd); printf("This goes into file-n"); fflush(stdout); ... https://stackoverflow.com Redirect stdout using dup - C Board
I want to redirect stdout to a file ... and after I print something I want to ... You probably want to restore the original stdout after you've dup'd it to ... https://cboard.cprogramming.co Redirect stdoutstderr using dup2, then resinstate later - Stack ...
int stdout_copy = dup(STDOUT_FILENO); dup2(nf, STDOUT_FILENO); ... stdout */ dup2(stdout_copy, STDOUT_FILENO); close(stdout_copy);. https://stackoverflow.com Restoring stdout after using dup - Stack Overflow
There are multiple issues: execl() does not return (except if there is an error), you need to fork() again or use e.g. system(). On execl the buffers ... https://stackoverflow.com [轉] linux 經典的例子解釋dup dup2 文件描述符重定向函數輸入 ...
創建STDOUT的描述符備份 oldstdout = dup(STDOUT); /* redirect standard output to DUMMY.FIL by duplicating the file handle onto the https://www.gomcu.com |