TMUX
A Claude Code environment variable, read out of the shipped bundle. It has been in the build since v2.1.138, including the newest one read.
What it is
Copying to the clipboard now works when you reach tmux over a socket rather than $TMUX.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.251.
Presence across releases
| Releases | Reading | Declared type | Default |
|---|---|---|---|
| 2.1.245 – 2.1.251 6 releases | never mined | — | — |
| 2.1.160 – 2.1.243 75 releases | in the build | str | — |
| 2.1.138 – 2.1.159 20 releases | in the build | — | — |
A row reading never mined is a release with no archived bundle behind it. Nothing was read out of it, so nothing here says whether the name was in it. A declared type or a default is only ever what that release's own bundle stated.
Changelog entries naming it
-
v2.1.251Copying to the clipboard works when tmux is attached over a socket
Copying to the clipboard now works when you reach tmux over a socket rather than $TMUX.
named in this entry
Documentation pages
- First request mentions it Claude Developer Platform
- cloud-sandboxes-reference mentions it Claude Developer Platform
- Orchestrate teams of Claude Code sessions mentions it Claude Code CLI
- Manage multiple agents with agent view mentions it Claude Code CLI
- Claude Code changelog mentions it Claude Code CLI
- CLI reference mentions it Claude Code CLI
- Configure cloud environments mentions it Claude Code CLI
- Run Claude Code behind a corporate launcher mentions it Claude Code CLI
- Environment variables mentions it Claude Code CLI
- Fullscreen rendering mentions it Claude Code CLI
- Hooks reference mentions it Claude Code CLI
- Interactive mode mentions it Claude Code CLI
A reference table page is one whose own table defines this name, and it is where the description above came from. A page that mentions it carries the name somewhere in its text and may say nothing about it at all. Every page carrying it.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the environment variable does. All environment variables.