I want to redirect the output of printf to a pipe, but for some reason it doesn’t seem to work. What does work is using write instead. This is my program if I replace write with the commented line, my program just blocks Answer Either add a new line character (n) to your output or use fflush() as Barmar suggests:
Tag: dup2
C program prints to terminal instead of file even after using dup2/dup
I’m in an operating systems course and doing assignments with C on Linux. In one of the assignments I was supposed to redirect and output to a file, but for some reason, I keep getting the output in the terminal instead. I tried writing a simple program to do just that and it still didn’t work: other things I tried
What end of stream dup2 change?
What end of the stream does dub2 ( ) change is it the end the OS is connected to or the end connected to application . this code redirect output to file and not the screen which means that input side of stream is connected now to the file right . Answer Before the dup2(), the file descriptor table for
dup2 paramater order confusion
I have written this simple program: What i want is, redirect the output of ls – l to a file called “theFile.txt”. The code works as i expect. What confuses me here is the order of dup2 parameters. I believe that correct order should be dup2(1, fd) – considering fd as the newFD and 1 as the oldFD. But the