What file descriptors actually are in Linux In Linux, almost everything is treated as a file. But applications do not work with files directly. They use file descriptors. A file descriptor is just a ...

Have you ever wanted to read a file one line at a time in a shell script and found the task to be a lot more trouble than you ever imagined? If you use a “for line ...

What Linux filesystem is your epoll instance sitting on? epoll, signalfd, and bpf objects are file descriptors that have no path on disk. They look like files because in Unix/Linux everything is, but ...

Last week’s column looked at how we can read from and write to files by associated the files with user-defined file descriptors. This week, we take this idea a bit further. Closing File Descriptors In ...