Overview
This command is designed to easily retrieve the name or other identifying information of the currently used tmux session. It is particularly useful for customizing the tmux status bar or when shell scripts need to perform different actions based on the current session.
Key Features
- Outputs information about the current tmux session
- Facilitates integration with the tmux status bar
- Allows session information to be utilized in scripts
Key Options
tmux-session-info is generally a simple utility script with few direct command-line options. In most cases, this script outputs specific information in a fixed format or internally retrieves information using tmux's 'display-message' command. Therefore, how the output of this script is utilized in the tmux configuration file (.tmux.conf) is more important than the options of the command itself.
General Usage
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Description:
`tmux-session-info` Executes the command.
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Installation
tmux-session-info is not included by default in Linux distributions. It is typically installed via a tmux plugin manager (tpm) or by manually adding the script. This command is often provided as part of plugin packs like 'tmux-plugins/tmux-sensible'.
Installation via TPM (tmux Plugin Manager)
Using a tmux plugin manager allows for easy installation and management.
- 1. Add the plugin to your .tmux.conf file: set -g @plugin 'tmux-plugins/tmux-sensible'
- 2. Install plugins after restarting tmux: Within tmux, press `prefix + I` (uppercase i) to install.
Manual Installation (Example)
This method involves downloading the script directly and adding it to your PATH.
- 1. Download the script: Example: `curl -fLo ~/.local/bin/tmux-session-info https://raw.githubusercontent.com/some-user/some-repo/main/tmux-session-info` (Actual script path needs to be verified)
- 2. Grant execute permissions: `chmod +x ~/.local/bin/tmux-session-info`
- 3. Verify PATH addition: Ensure the script is in a directory included in your PATH, or add `export PATH="$HOME/.local/bin:$PATH"` to your `.bashrc` or `.zshrc`.
Usage Examples
tmux-session-info is primarily used within the tmux configuration file (.tmux.conf) for customizing the status bar or for retrieving current session information in shell scripts.
Display Basic Session Information
tmux-session-infoOutputs information about the currently active tmux session. The output format may vary depending on the script's implementation.
Display Session Name in tmux Status Bar
set -g status-left '#[fg=green]Session: #(tmux-session-info) #[default]'Add the following setting to your .tmux.conf file to display the current session name on the left side of the tmux status bar (Example for 'tmux-plugins/tmux-sensible' plugin):
Utilize Session Name in Shell Scripts
CURRENT_SESSION=$(tmux-session-info)
echo "Current tmux session: $CURRENT_SESSION"You can assign the current tmux session name to a variable within a shell script for its use.
Tips & Notes
Tips and notes for effectively using tmux-session-info.
Customizing Output
If the tmux-session-info script itself has limited options, you can modify the script's internal code or directly use tmux's 'display-message' command to obtain information in your desired format.
- In `.tmux.conf`, when setting `status-left` or `status-right`, you can include the output of external scripts using the `#(command)` syntax.
- More granular control is possible by directly using tmux's built-in commands, such as `tmux display-message -p '#{session_name}'`.
Performance Considerations
Frequently updating external script output in the status bar can have a minor impact on tmux's performance. It is advisable to set an appropriate update interval.
- You can adjust the update frequency by setting configurations like `set -g status-interval 5` (updates the status bar every 5 seconds).