Hacker News·5 min read·hard
Tracking down a Zsh history data loss bug
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ingve✦AI Summary
A developer details the process of debugging a persistent data loss issue within the Zsh shell history file. The investigation involved patching the shell to force a crash and analyzing core dumps to identify the root cause.
For many years, I sometimes discovered that commands I was sure I had run were no longer present in my Z shell history file ( ~/.zsh_history ). In this article, I will show you how I tracked down the bug. Spoiler: ultimately, patching Zsh to make it crash loudly and analyzing the crash’s core dump was the winning strategy!
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