SQLite Session Extension provides a convenient way to create “diffs” between two versions of a table. These “diffs” are binary and are usually much more compact than their SQL counterparts. This article shows how to create and apply such “diffs” to tables.
How to Enforce Read-Only Mounting of USB Drives
A Facebook user asked how to forbid write access to an external USB drive, allowing only for read-only access. This article explains how to do that with the help of udev.