prezto_config/plugins/tmux/init.zsh

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#
# Defines tmux aliases and provides for auto launching it at start-up.
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#
# Authors:
# Sorin Ionescu <sorin.ionescu@gmail.com>
#
# Usage:
# To auto start it, add the following to zshrc:
#
# # Auto launch tmux at start-up.
# zstyle -t ':omz:plugin:tmux:auto' start 'yes'
#
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# Aliases
alias ta="tmux attach-session"
alias tl="tmux list-sessions"
# Auto Start
if (( $SHLVL == 1 )) && zstyle -t ':omz:plugin:tmux:auto' start; then
session="$(
tmux list-sessions 2> /dev/null \
| cut -d':' -f1 \
| head -1)"
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if [[ -n "$session" ]]; then
exec tmux attach-session -t "$session"
else
exec tmux new-session
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fi
fi