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 ...

The actual permissions that result are complicated by the fact that the process has a default permissions mask - umask. The effective permissions are given by mode & ~umask which means that the bits ...

On July 30, Al Viro sent a patch set to the linux-fsdevel mailing list with a comprehensive cover letter explaining his recent work on ensuring that the kernel's internal representation of file ...

When you change an ADABAS file or NATURAL DDM, you must re-create the access descriptor(s) with the ACCESS procedure, using the same access descriptor name(s). Then you must update each view ...

Developers learning the Unix (or POSIX in general) system-call set will quickly encounter file descriptors, which are used to represent open files and more. Developers also tend to learn early on that ...

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 ...