Simon Willison’s Weblog

Mac OS X Leopard: UNIX. Leopard ships with DTrace, and it’s been hooked in to Java, Ruby, Python and Perl.

Posted 11th June 2007 at 11:05 pm

Recent articles

Video: Building a tool to copy-paste share terminal sessions using Claude Code for web - 23rd October 2025
Dane Stuckey (OpenAI CISO) on prompt injection risks for ChatGPT Atlas - 22nd October 2025
Living dangerously with Claude - 22nd October 2025

dtrace 2 java 89 leopard 14 osx 80 perl 27 python 1198 ruby 72

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