There was a time when, to use a computer, you merely turned it on and were greeted by a command prompt. Nowadays, most operating systems offer a security model with multiple users. Typically, the ...

The access controls typically support inheritance along the lines of the directory hierarchy. We will not delve into all these details but restrict the discussion to the differences of the three ...

OpenBSD has recently stressed to us the value of key rotation by their use of “Signify” distribution release signatures. We have realized that SSH keys should also rotate, to reduce the risk of ...

For many applications, employing common programming techniques—such as memory locking—and savvy scheduling under the POSIX (Portable Operating System Interface for Unix) API (application program ...

Storage isn’t just storage. There is block storage, file storage and, more recently, object storage. And only two of those three are Posix-compliant. That’s not something most users ever need to know ...