Move pages under tldr, lint run.sh, update docs

tldr/tmux

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# tmux
+
+> Terminal multiplexer.
+> It allows multiple sessions with windows, panes, and more.
+> See also: `zellij`, `screen`.
+> More information: <https://github.com/tmux/tmux>.
+
+- Start a new session:
+
+`tmux`
+
+- Start a new named session:
+
+`tmux new -s {{name}}`
+
+- List existing sessions:
+
+`tmux ls`
+
+- Attach to the most recently used session:
+
+`tmux attach`
+
+- Detach from the current session (inside a tmux session):
+
+`<Ctrl>-B d`
+
+- Create a new window (inside a tmux session):
+
+`<Ctrl>-B c`
+
+- Switch between sessions and windows (inside a tmux session):
+
+`<Ctrl>-B w`
+
+- Kill a session by name:
+
+`tmux kill-session -t {{name}}`