Linux launch from terminal

When the launcher has been created you can set the keyboard shortcut in the same way as the other launchers.

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Launching application from terminal [duplicate]

How to launch a GUI application (e.g. gedit) from terminal and detach it from there in one step?

3 Answers 3

The & operator enables the application to run in the background. Use

(the latter lets you use the terminal after launching gedit, just press return to send it to the background). Nohup dispatches the application completely from the terminal and session.

There are two steps involved. One is generally called «backgrounding» and the other «disowning».

• You launch a background job by appending an ampersand & after the command. This sends the job to the background and allows your shell to continue running. The command you backgrounded is still running as a child process of the shell. You can see it in the list of shell jobs bu running jobs . You could run fg (or fb %N if you have more than one backgrounded job) to bring it to the foreground and send it things like Ctrl C .
• You disown a job by running disown %N where N is the job number. If you only have one backgrounded job this would be disown %1 . This kicks the background job «out of the nest» so that it is no longer a child of the shell. You can then close the shell and the disowned program would keep running.

Note: In ZSH you can shortcut the process of disowning by running command &! . The &! backgrounds and disowns in one step.

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How do I open a terminal? [duplicate]

I just got ubuntu running on my computer and now I am ready to write a program. but I can’t figure out how to open a command terminal. I guess I don’t know where to find which version I am running either. Any help would be appreciated. Thank you.

2 Answers 2

• Open the Dash by clicking the Ubuntu icon in the upper-left, type «terminal», and select the Terminal application from the results that appear.
• Hit the keyboard shortcut Ctrl — Alt + T .

There are a couple of methods:

• If you’re running Unity: open the dash, type terminal, hit Return .
• If you’re on the old style menus, Applications → Accessories → Terminal.
• Control + Alt + T .
• Alt + F2 , gnome-terminal , Return .
• For a TTY: Control + Alt + F1..7 .

If you’re using Ubuntu variants, you might need to substitute gnome-terminal for xfce4-terminal , konsole or if you’ve gone off-piste, terminator (my fav) or if you’re running out of options, xterm . There are others — many, many others — but I doubt you’ll ever find them on a *buntu default install.

The TTYs are your last, best hope if you desperately need some form of terminal. Just be aware that they’re not conscious of the graphical environment so if you want to launch something graphical from one, you’ll need to run export DISPLAY=:0 first. Or adapt that if you’re running more than one X display.

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What is the command to run System Settings from a terminal?

System Settings can be run from the launcher (pinned by default), the Dash, or the power cog. But what command would I enter in a terminal window if I want to run it from there?

8 Answers 8

Note: for versions between 14.04 and 17.04 (when Unity was used instead of GNOME), the command is unity-control-center .

if you run gnome-control-center and get command not found , you can install it with:

For Ubuntu Mate the command is mate-control-center .

I found a different solution.

I tried removing/installing gnome-control-center ; this did reinstall the application I still couldn’t open it.

Later I found that it would start up on the side of the screen and I couldn’t access it

I changed the display mode to single display and it came back. Hope it helps.

In Crouton, you must run anything that would require a password from the terminal, such as update manager, software center, synaptic, etc. So, to get to system settings you would enter in the terminal:

That will bring up the system settings GUI.

To check for updates, or if the update manager appears in the Unity Launcher, run it from the terminal, not by clicking on it:

The same applies to synaptic, the software center, etc. Anything which requires a password, must be run from the terminal in Crouton with a sudo .

Well, in KDE NEON 5.16.4 (Ubuntu 18.04), it is written in the «System Settings Handbook»:

The System Settings can be started in one of three ways:

• By selecting Settings → System Settings from the Application Menu.
• By pressing Alt + F2 or Alt + Space . This will bring up the KRunner dialog. Type systemsettings5 , and press Enter .
• Type systemsettings5 & at any command prompt. All three of these methods are equivalent, and produce the same result.

In my case, I needed to configure my HP LaserJet settings. Doing this as user, after applying and saving, they were ignored. So I think I had to do this as root and the settings are stored normaly now, so, each time the user opens the print dialog, the system remembers that I want log side binding and 1200 resolution :=)

I thought that sudo systemsettings5 & was enough, but as Zanna suggests: It should also be recommended to use ‘sudo -H’ if opening a GUI app with sudo.

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How can I open (launch) files using the terminal?

Objective: Open a text file and other types using the terminal.

Let’s suppose I have a file named myFile.txt and I want to launch this file (open it, not sure how I’m supposed to say it), how can I do this?

As I searched all I could find was articles about create and edit files or display the content in the terminal.

Some of the failed attempts:

And, yes, I used the commands in the folder containing the file in question.

2 Answers 2

xdg-open will try to guess your desktop environment and the file’s mime type and try to open it in the appropriate application:

Select the tool manually

Typically, when using the terminal window and command lines, you are expected to know which tool you want to use. I know that this can be difficult in the beginning, but there are several things you might want to do.

If you use a graphical file manager, there is

• a main tool (for the main task), that you start by left-double-clicking on the file’s icon.
• and often a few other tools (for other tasks), that you can select after right-clicking on the file’s icon.

The main tasks for a text file might be editing and viewing.

In standard Ubuntu desktop there is gedit for these tasks.

If you want only viewing in text mode, you can use less

If you want to edit in text mode, you can use nano

So I suggest that you try

You mentioned some alternatives that do not work (because . )

This is typically used to run an executable file

This points to a file in the root directory /

This changes the terminal window to the specified directory ( cd ‘change directory’ makes the terminal window look at the specified directory. You should specify a directory (not a file) after the cd command.)

eog «Eye of Gnome» is a viewer for picture files.

xdg-open

Until you know which tool to use, you can try with xdg-open . It will select a tool for you depending of the kind of file you are using. I would expect that it will select gedit for text files and eog for picture files (in standard Ubuntu desktop).

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