How to Use the Command 'zellij' (with Examples)

Zellij is a powerful and flexible terminal multiplexer that allows users to manage multiple terminal sessions simultaneously in a single window. It provides an intuitive interface and has features similar to other well-known terminal multiplexers like tmux and screen, while also offering some unique functionalities and additional tools (“batteries included”) to enhance user productivity in terminal environments. Zellij is especially valued by developers and system administrators who require efficient workflow management and multitasking capabilities within the confines of a command-line interface.

Use Case 1: Start a New Named Session

Code:

zellij --session name

Motivation:

Starting a new named session is fundamental for organizing work within terminal environments. Naming sessions allows users to easily identify and switch between different sessions, tailoring each to particular tasks or projects. A named session is particularly useful when working with multiple projects concurrently, allowing seamless transitions without losing the context or running state of each environment.

Explanation:

• zellij: This is the command to invoke the Zellij terminal multiplexer.
• --session: This flag is used to begin a new session or specify operations upon a session.
• name: This placeholder represents the actual name you wish to assign to your new session. It helps distinguish this session from others for better navigation and management.

Example Output:

Upon executing this command, you’ll enter a new terminal window controlled by Zellij, labeled with the name you provided. This environment operates independently, offering multiple panes and tabs ready for your tasks.

Use Case 2: List Existing Sessions

Code:

zellij list-sessions

Motivation:

Being aware of all active sessions is crucial for efficient session management and ensures that users can attach, manage, and organize ongoing tasks without confusion. This command is invaluable for individuals managing multiple sessions across various projects or system tasks, providing a clear snapshot of all workspaces and allowing them to strategize and prioritize their workflows accordingly.

Explanation:

• zellij: The command to run the Zellij terminal application.
• list-sessions: This command displays a list of all existing Zellij sessions, along with their names and statuses.

Example Output:

The output will show a list of active sessions along with their details, such as:

Session Name: name1
Session Name: projectX
Session Name: debugging

Each listed session can be further managed or attached as needed.

Use Case 3: Attach to the Most Recently Used Session

Code:

zellij attach

Motivation:

Quickly accessing the last session you worked on is incredibly convenient when you need to resume your most recent task without the hassle of remembering names or manually searching through active sessions. This function is especially helpful in environments where time is critical, and users require rapid access to continue their work.

Explanation:

• zellij: Calls the Zellij application.
• attach: This command automatically reconnects the user to the most recently used Zellij session. It eliminates the need to specify which session to attach to and efficiently restores the user’s workflow context.

Example Output:

Once executed, the terminal will switch to your latest Zellij session, presenting you with the same state and configurations you left off, enabling a seamless continuation of your tasks.

Use Case 4: Open a New Pane (Inside a Zellij Session)

Code:

<Alt> + N

Motivation:

Inside a Zellij session, having the ability to split the current workspace into multiple panes is vital for multitasking. By opening new panes, users can view logs, edit files, run commands, or monitor processes side by side without leaving the main window. This capability enhances productivity by maximizing the utility of screen space and reducing the need to switch contexts.

Explanation:

• <Alt> + N: A keyboard shortcut within a Zellij session used to open a new pane. This shortcut is easy to remember and expedites the action of creating a new split, reinforcing effective use of the command-line interface for parallel tasks.

Example Output:

The current session window will expand with a new pane, typically split horizontally next to the existing pane, allowing you to perform additional actions in a new context without interruption.

Use Case 5: Detach from the Current Session (Inside a Zellij Session)

Code:

<Ctrl> + O, D

Motivation:

Detaching from a session while leaving all processes running in the background is crucial for maintaining long-running tasks without interruption. This function allows users to exit the Zellij environment temporarily and return to it later, ensuring continuous operations that do not require constant supervision. It is a practical feature for those who manage extensive or time-consuming command-line tasks.

Explanation:

• <Ctrl> + O, D: A keyboard shortcut sequence specific to Zellij for detaching from the current session. This combination lets users safely step away from the session while all panes and processes continue executing as if they were present.

Example Output:

Executing this shortcut detaches your terminal from the current session, bringing you back to the normal shell prompt or terminal state from which you started the session. You can reattach using specific session identifiers later.

Conclusion

Zellij provides a comprehensive set of features that enhance productivity and streamline workflow management within terminal environments. From starting new named sessions for organized task handling to quickly switching between or detaching from active sessions, Zellij elevates command-line operations. It is customized for users who require multitasking and efficient session management in their everyday coding, developing, or administrative tasks.