https://www.guido-flohr.net/ Tue, 02 Jun 2026 17:07:23 +0000 Tue, 02 Jun 2026 17:07:23 +0000 Qgoda vv0.11.0 (https://www.qgoda.net/) The best way to delete a pid file (or rather a lock file) is not to delete it. Doing so will almost always result in race conditions voiding the protection against parallel execution. Wed, 31 Jan 2018 22:00:00 +0000 https://www.guido-flohr.net/never-delete-your-pid-file/index.html https://www.guido-flohr.net/never-delete-your-pid-file/index.html Development C Daemons Development When dealing with numbers that come from untrusted sources, you should always expect that these numbers may not fit into the integer data type that you are using. Such number overflows may cause subtle bugs or security problems in your code. Mon, 20 Jan 2020 22:00:00 +0000 https://www.guido-flohr.net/number-comparison-without-overflow/index.html https://www.guido-flohr.net/number-comparison-without-overflow/index.html Development C Development