open tmux in a certain directory

When I start working on a project, I start tmux and then cd into its directory. There’s a simpler way to do it, though:

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tmux new -s $SESSION_NAME -c $DIRECTORY

Which then can be aliased, so I can do something like tmux-blog to start in the correct directory.

We can go ever further, and start the section with a specific layout running the commands you want:

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tmux new -s blog -c $BLOG_DIR \; \
  split-window 'make serve' \; \
  detach-client && \
  tmux attach -t blog

For horizontal split use split-window -h.