https://oscarchou.com/tags/developer/ Recent content in Developer on Oscar's Notebook Hugo -- gohugo.io en-US Sat, 20 Dec 2025 20:00:00 +1300 https://oscarchou.com/posts/troubleshoot/gpg-signing-failed-inappropriate-ioctl-for-device/ Sat, 20 Dec 2025 20:00:00 +1300 https://oscarchou.com/posts/troubleshoot/gpg-signing-failed-inappropriate-ioctl-for-device/ This blog post details the common "Inappropriate ioctl for device" error encountered while setting up GPG signing on macOS, specifically when using GitHub repositories. It explains the root cause – a mismatch between GPG's expectations for a terminal prompt and the current pinentry UI – and guides readers through a step-by-step solution involving installing the correct `pinentry-mac` program, configuring GPG's `pinentry-program` path, and crucially, setting the `GPG_TTY` environment variable. The article emphasizes the importance of setting the `GPG_TTY` variable correctly, particularly when using Fish Shell, to ensure proper interaction between GPG and the terminal. It provides practical advice and troubleshooting tips for resolving this frustrating issue and successfully signing Git commits with GPG on macOS.