The computer screen command is a terminal multiplexer, which essentially manner it allows you to run multiple terminal sessions within a single window. Ever needed to arrange long-running tasks or keep your sessions alive even after you’ve logged out? That’s where computer screen comes into play.

The beauty of computer screen is its skill to detach and reattach sessions, making it extraordinarily useful for a ways flung artwork, long-running scripts, or any activity that calls so that you can hop between multiple terminal house home windows. Typically comparable directions include computer screen -r to reattach a session, computer screen -ls to file full of life sessions, and Ctrl + A, then D to detach a session without terminating it.

So, whether or not or no longer you’re a tool administrator juggling moderately a large number of tasks or a developer running multiple processes, computer screen is a command you’ll need to add to your Linux toolkit. Be told without delay to learn to harness its entire potential.

Not unusual syntax for computer screen command:

computer screen [OPTIONS] [SESSION NAME]

1. Create a session with specified identify

computer screen -S [file]

The -S risk creates a brand spanking new window throughout the computer screen and names it.

Example:

particular person@hostname:~$ computer screen -S my_session

After running this command, you’ll be throughout the new computer screen session named my_session. You won’t see the session identify at once throughout the terminal, then again you’ll file all full of life sessions by way of detaching from the prevailing session (by way of pressing Ctrl + A followed by way of D) and then running computer screen -ls.

Trend output for computer screen -ls after detaching:

particular person@hostname:~$ computer screen -ls
There is a computer screen on:
        12345.my_session     (Detached)
1 Socket in /var/run/computer screen/S-user.

In this example, 12345 is the process ID of the computer screen session, and my_session is the identify you gave to the session.

To reattach to this session, you’ll use:

computer screen -r 12345

Or if you happen to named your session:

computer screen -r my_session

This may most likely raise you once more to the computer screen session you detached from.

2. Document all computer screen processes

computer screen -ls

This option displays all lately open house home windows, at the side of those running throughout the background.

Example:

The output will maximum incessantly look something like this:

There are screens on:
    12345.pts-0.hostname  (Detached)
    67890.pts-1.hostname  (Attached)
2 Sockets in /var/run/computer screen/S-username.

Proper right here’s a breakdown of the output:

• 12345.pts-0.hostname and 67890.pts-1.hostname are the identifiers for the computer screen sessions.
• 12345 and 67890 are the process IDs (PIDs) of the computer screen sessions.
• pts-0 and pts-1 indicate the terminal sorts.
• hostname is the identify of the host machine where the computer screen sessions are running.
• (Detached) or (Attached) indicates the status of the computer screen session.
• Detached means that the session is working throughout the background and not lately hooked as much as any terminal.
• Attached means that the session is lately being regarded as in a terminal window.
• 2 Sockets in /var/run/computer screen/S-username indicates the selection of computer screen sessions and the record where the session sockets are stored. username is the identify of the one who owns the sessions.

3. Reattach the Terminal’s session

computer screen -r [filename]

Use this technique to reattach a computer screen session which was once detached in earlier.

Example:

Let’s say you’ve a long-running process, like downloading a large file, and you want to stick it running even after you’ve logged out. You’ll be capable to use computer screen to create a brand spanking new session and run the process there.

Create a brand spanking new computer screen session:

computer screen -S my_download_session

This may most likely create a brand spanking new computer screen session named my_download_session.

Run your long-running process:

wget http://example.com/large-file.zip

Detach from the computer screen session:

Press Ctrl + A followed by way of D to detach from the session. The session will continue running throughout the background.

Log off or close the terminal:

At this degree, you’ll safely log out or close the terminal. The download will continue throughout the background.

Reattach to the computer screen session:

Later, when you want to check the advance or reattach to the session, you’ll use the computer screen -r command.

computer screen -r my_download_session

This may most likely reattach you to the computer screen session named my_download_session, and also you’ll see the advance of your download or each and every different long-running process.

If you have multiple detached sessions and likewise you’re not certain what the session names are, you’ll file them with:

computer screen -ls

This may most likely show you a list of all the detached and connected computer screen sessions, and also you’ll make a selection the one you want to reattach to.

4. Detach a session

computer screen -d [file]

The -d risk is used to detach the computer screen session, allowing it to be reattached later.

Example:

Proper right here’s a step-by-step example to expose how computer screen -d [filename] can be used:

Step 1: Create a New Show Session with a Identify

First, create a brand spanking new computer screen session and gives it a name, for example “my_session“:

computer screen -S my_session

Step 2: Run Some Directions throughout the Show Session

After creating the session, you’ll be within it. You’ll be capable to run some directions like:

ls
echo "Hello, Global!"

Step 3: Detach the Show Session Manually

You’ll be capable to detach from the computer screen session manually by way of pressing Ctrl + A followed by way of D. This may most likely raise you once more to your distinctive terminal, then again the session “my_session” will however be running throughout the background.

Step 4: Reattach to the Show Session

You’ll be capable to reattach to the session the usage of:

computer screen -r my_session

Step 5: Detach the Show Session The use of -d

Now, let’s say you could be in another terminal and you want to detach the session “my_session” without reattaching to it. You’ll be capable to use the -d risk like this:

computer screen -d my_session

This may most likely detach the session “my_session” if it’s lately hooked as much as any terminal, without terminating it. You’ll be capable to later reattach to it the usage of computer screen -r my_session.

5. Share a computer screen’s session

computer screen -X [sharing_session]

This option we could in two folks to log into the equivalent account from different puts.

Example:

Proper right here’s a simple example to expose the way you’ll use computer screen -X to send a command to a running computer screen session:

Step 1: Create a New Show Session

First, open a terminal and create a brand spanking new computer screen session named “my_session“:

computer screen -S my_session

Step 2: Detach from the Show Session

You’ll be capable to detach from the computer screen session by way of pressing Ctrl + A followed by way of D.

Step 3: Send a Command to the Show Session from Every other Terminal

Open another terminal window and use the computer screen -X command to send a command to the “my_session” computer screen. For instance, let’s send the surrender command to terminate the session:

computer screen -S my_session -X surrender

This may most likely terminate the "my_session" computer screen session.

Additional Linux directions:

The post Tips on how to Use the Display Command in Linux appeared first on Hongkiat.

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