Expired50% confidenceFactExact time
Slash commands can be traced back to the IRC protocol born in 1988, where users performed channel operations via commands such as /join, /nick, and /msg.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Complete Guide to OpenAI Codex CLI Built-in Commands and Session Recovery
bilibili晟6668886/6/2026
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