Back in 2011 this post was a bare copy-paste of a getifaddrs() snippet for reading an iPhone’s Wi-Fi MAC address.

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With LINQ to SQL you can’t change a foreign-key column directly on a tracked entity — the context owns the

Continue readingLINQ Update FK – Operation is not valid due to the current state of the object

Symptom: SQL Server refuses to run xp_cmdshell with SQL Server blocked access to procedure ‘sys.xp_cmdshell’ of component ‘xp_cmdshell’ because this

Continue readingEnable the T-SQL xp_cmdshell command

What you’re seeing If you use WordPress’s one-click updater, you’ve probably met this screen: the whole site — admin included

Continue readingFixing the WordPress “Briefly unavailable for scheduled maintenance” Lock