Passwordless Ubuntu

Summary Completely disabling the local login password on a default Ubuntu installation used as a single-user system introduces several security vulnerabilities and attack vectors. Although the machine is not physically accessible to untrusted individuals and no remote login services are installed, there are still realistic remote and local privilege-escalation risks that depend on the presence … Read more

Can I offset keys vertically (Touch layout)

Summary The question revolves around vertical key offset in a touch layout, which is a crucial aspect of custom keyboard design. The user is currently only able to achieve horizontal offset and is seeking a solution for vertical offset. This issue is significant in keyboard layout design as it affects the overall user experience and … Read more

MSVC non compliant with standard?

Summary The issue at hand is a compiler discrepancy between GCC and MSVC. A C++ code snippet using templates and std::ostream is compiling correctly with GCC but throwing an error with MSVC. The error message indicates that the identifier val is undeclared, which seems misleading given the context. The key difference between the non-compiling and … Read more

Large Seekable HTTP Video

Summary The Large Seekable HTTP Video issue arises when serving large MP4 files over HTTP, where the video plays immediately but seeking to a different position in the video causes it to restart from the beginning. This article will delve into the root cause, real-world impact, and solutions to this problem. Root Cause The root … Read more

Partition and foreign key conflict

Summary The issue of db partitioning with existing foreign keys in InnoDB engine is a common problem. InnoDB engine does not support partitioning on tables with foreign keys. This is because InnoDB uses a different storage mechanism for partitioned tables, which is not compatible with foreign key constraints. To resolve this issue, we need to … Read more