matlab (Linux)

Start MATLAB program from Linux system prompt

Syntax

matlab

matlab option1 ... optionN

Description

matlab is a Bourne shell script that launches the MATLAB^® program from a Linux^® system prompt. Here the term matlab refers to this script and MATLAB refers to the program.

The matlab script:

Determines the MATLAB root folder, the value returned by the matlabroot function
Processes command-line options, if any
Reads the MATLAB start-up file, .matlab7rc.sh
Sets MATLAB environment variables

matlab option1 ... optionN launches MATLAB with the specified start-up options.

Alternatively, assign start-up options in the MATLAB .matlab7rc.sh Start-up File. Modifying the .matlab7rc.sh file defines start-up options every time you start MATLAB.

MATLAB uses the Java^® Virtual Machine (JVM^®) software to run the desktop and to display graphics. The -nojvm option enables you to start MATLAB without the JVM. Using this option minimizes memory usage and improves initial start-up speed, but restricts functionality.

example

Input Arguments

expand all

`option1 ... optionN` — One or more start-up options
strings

One or more start-up options, specified as strings corresponding to valid start-up options from the following tables.

Mode Options

Option Result

Option	Result
`-desktop`	Start MATLAB without a controlling terminal. Use this option when you start MATLAB from a window manager menu or desktop icon.
`-nodesktop`	Run the JVM software without opening the MATLAB desktop. You can use development environment tools by calling them as functions. To run in batch processing mode, use the `-batch` option. If you use the `>` constructor to pipe to MATLAB, then the `nodesktop` option is used automatically. MATLAB provides a command window-only interface in the desktop environment. On the Home tab, click Layout. Then, under Select Layout, select Command Window Only. For a more accessible alternative to using MATLAB with the `-nodesktop` option, use the Command Window Only layout in MATLAB Online™ instead. Using the Command Window Only layout in MATLAB Online gives you access to more keyboard shortcuts and, when needed, the full functionality of the MATLAB desktop. To select the Command Window Only layout in MATLAB Online, go to the Home tab, and in the Environment section, click the Layout button and then select Command Window Only.
`-nojvm`	Start MATLAB without the JVM software. Features that require Java software (such as the desktop tools and graphics) are not supported.

-desktop

Start MATLAB without a controlling terminal. Use this option when you start MATLAB from a window manager menu or desktop icon.

-nodesktop

Run the JVM software without opening the MATLAB desktop. You can use development environment tools by calling them as functions.

To run in batch processing mode, use the -batch option.

If you use the > constructor to pipe to MATLAB, then the nodesktop option is used automatically.

MATLAB provides a command window-only interface in the desktop environment. On the Home tab, click Layout. Then, under Select Layout, select Command Window Only.

For a more accessible alternative to using MATLAB with the -nodesktop option, use the Command Window Only layout in MATLAB Online™ instead. Using the Command Window Only layout in MATLAB Online gives you access to more keyboard shortcuts and, when needed, the full functionality of the MATLAB desktop. To select the Command Window Only layout in MATLAB Online, go to the Home tab, and in the Environment section, click the Layout button and then select Command Window Only.

-nojvm

Start MATLAB without the JVM software. Features that require Java software (such as the desktop tools and graphics) are not supported.

Display Options

Option	Result
`-noFigureWindows`	Disable the display of figure windows in MATLAB.
`-nosplash`	Do not display the splash screen during startup.
`-nodisplay`	Start the JVM software without starting the MATLAB desktop. This option does not display X commands. It overrides the `DISPLAY` environment variable.
`-display xDisp`	Send X commands to X Window Server display `xDisp`. This option overrides the `DISPLAY` environment variable.

Set Initial Working Folder

The initial working folder is the current folder when MATLAB starts. For more information, see MATLAB Startup Folder.

Option Result

Option	Result
`-sd folder`	Set the MATLAB folder to `folder`, specified as a string. Example: `matlab -sd "C:\work"`
`-useStartupFolderPref`	Set the MATLAB folder to the value specified by the Initial working folder preference, located in the General Preferences page of the Preferences.

-sd folder

Set the MATLAB folder to folder, specified as a string.

Example: matlab -sd "C:\work"

-useStartupFolderPref

Set the MATLAB folder to the value specified by the Initial working folder preference, located in the General Preferences page of the Preferences.

Specify MATLAB Version

Option	Result
`v=variant`	Start the version of MATLAB in the `bin/arch/variant` folder instead of the `bin/arch` folder, where: `arch` is the system architecture, the value returned by the `computer('arch')` function `variant` is a string representing a MATLAB version

Debugging Options

Option	Result
`-logfile filename`	Copy Command Window output, including error reports, into `filename`, specified as a string. Example: `-logfile output.log`
`-n`	Display, without starting MATLAB, the final values of the environment variables and arguments passed to the MATLAB executable. This option also displays other diagnostic information for use when working with a Technical Support Representative.
`-e`	Display, without starting MATLAB, all environment variables and their values to standard output. If the exit status is not `0` on return, then the variables and values might not be correct.
`-Ddebugger debugopts`	Start MATLAB in debug mode. This option uses the debugger program name, `debugger`, specified as a string, for example, `gdb`, `lldb`, or `dbx`. You can specify the full path to the debugger. This option must be the first option in the `matlab` script. Debugger program command-line options, `debugopts`, specified as a string of valid options for `debugger`. See your debugger documentation for details. Do not use any other `matlab` script options when using `debugopts`. Do not add a space between D and `debugger`. Example: `-Dgdb`
`-jdb portnumber`	Enable use of the Java debugger. The Java debugger uses the default `portnumber` value 4444 to communicate with MATLAB. The port number is optional. However, to use the Java debugger while running multiple MATLAB sessions, you must specify a port number. The `portnumber` value must be an integer in the range 0–65535. The integer cannot be reserved or currently in use by another application on your system.
`-debug`	Display information for debugging X-based problems. Use this option only when working with a Technical Support Representative from MathWorks, Inc.

Execute MATLAB Script or Function

Option Result

Option	Result
`-batch statement`	Execute MATLAB script, statement, or function non-interactively. MATLAB: Starts without the desktop Does not display the splash screen Executes `statement` Displays figure windows, unless combined with the `-noFigureWindows` or `-nodisplay` options Displays user-generated modal dialog boxes, but does not display unprompted modal dialog boxes Disables changes to preferences Disables toolbox caching Logs text to `stdout` and `stderr` Exits automatically with exit code 0 if `statement` executes successfully. Otherwise, MATLAB terminates with a non-zero exit code. `statement` is MATLAB code enclosed in double quotation marks. If `statement` is the name of a MATLAB function or script, do not specify the file extension. Any required file must be on the MATLAB search path or in the startup folder. Use the `-batch` option in non-interactive scripting or command line workflows. Do not use this option with the `-r` option. To test if a session of MATLAB is running in batch mode, call the `batchStartupOptionUsed` function. Example: `-batch "myscript"`
`-r statement`	Execute the MATLAB `statement`. Use this option for interactive workflows. Do not use this option with the `-batch` option. Note To set the initial working folder, use the `-sd` option. For example: `-sd folder` Example: `-r "disp(['Current folder: ' pwd])"` Example: `-r "myscript"`

-batch statement

Execute MATLAB script, statement, or function non-interactively. MATLAB:

Starts without the desktop
Does not display the splash screen
Executes statement
Displays figure windows, unless combined with the -noFigureWindows or -nodisplay options
Displays user-generated modal dialog boxes, but does not display unprompted modal dialog boxes
Disables changes to preferences
Disables toolbox caching
Logs text to stdout and stderr
Exits automatically with exit code 0 if statement executes successfully. Otherwise, MATLAB terminates with a non-zero exit code.

statement is MATLAB code enclosed in double quotation marks. If statement is the name of a MATLAB function or script, do not specify the file extension. Any required file must be on the MATLAB search path or in the startup folder.

Use the -batch option in non-interactive scripting or command line workflows. Do not use this option with the -r option.

To test if a session of MATLAB is running in batch mode, call the batchStartupOptionUsed function.

Example: -batch "myscript"

-r statement

Execute the MATLAB statement. Use this option for interactive workflows. Do not use this option with the -batch option.

Note

To set the initial working folder, use the -sd option. For example:

-sd folder

Example: -r "disp(['Current folder: ' pwd])"

Example: -r "myscript"

Use Single Computational Thread

By default, MATLAB uses the multithreading capabilities of the computer on which it is running.

Option	Result
`-singleCompThread`	Limit MATLAB to a single computational thread. This option is for numerical computations only.

Disable Searching Custom Java Class Path

Option	Result
`-nouserjavapath`	Disable use of `javaclasspath.txt` and `javalibrarypath.txt` files. For more information, see Specifying Java Startup Options.

OpenGL Library Options

These options control the use of software OpenGL^® libraries when MATLAB detects a graphics driver with known issues. For more information, see Graphics Features That Have Specific Requirements.

In a future release, these options will be removed. For more information, see Version History.

Option	Result
`-softwareopengl`	Force MATLAB to start with software OpenGL libraries.
`-nosoftwareopengl`	Disable auto-selection of OpenGL software.

Specify License File

Option	Result
`-c license`	Use the specified license file, `license`, specified as a string, a colon-separated list of license file names, or a `port@host` entry. For more information, see Update or Modify Network License Files.

Help Options

Option	Result
`-h`	Display startup options without starting MATLAB.
`-help`	Same as `-h` option.

Examples

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Start MATLAB Without Desktop

matlab -nodisplay

Display Current Folder at Start-up

matlab -r "disp(['Current folder: ' pwd])"

More About

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.matlab7rc.sh Start-up File

The .matlab7rc.sh shell script contains variable definitions used by the matlab script.

Use the .matlab7rc.sh file to redefine variables defined in the matlab script. matlab looks in these folders for the first occurrence of .matlab7rc.sh in the following order:

Current folder
Home folder ($HOME)
matlabroot/bin folder

To edit the .matlab7rc.sh file, use the template located in the matlabroot/bin folder.

This table lists the variables. For more information, see the comments in the .matlab7rc.sh file.

Variable	Definition and Standard Assignment Behavior
`ARCH`	Machine architecture MATLAB checks these values in this order: `ARCH`, passed with the `-arch` or `-arch/ext` argument to the script Value of the environment variable `MATLAB_ARCH`
`DISPLAY`	Host name of the X Window display MATLAB uses for output The value of `Xdisplay` passed with the `-display` argument to the script is used; otherwise, the value in the environment is used. MATLAB ignores `DISPLAY` if the `-nodisplay` argument is passed.
`LD_LIBRARY_PATH`	Final Load library path The final value is normally a colon-separated list of four sublists, each of which could be empty. The sublists are: Defined in `.matlab7rc.sh` as `LDPATH_PREFIX` Computed in the script and includes folders inside the MATLAB root folder and relevant Java folders Contains any nonempty value of `LD_LIBRARY_PATH` from the environment possibly augmented in `.matlab7rc.sh` Defined in `.matlab7rc.sh` as `LDPATH_SUFFIX`
`MATLAB`	MATLAB root folder
`MATLABPATH`	MATLAB search path The final value is a colon-separated list with the `MATLABPATH` from the environment prepended to a list of computed defaults. At start-up, you can add subfolders of `userpath` to the MATLAB search path. See `userpath` for details.
`SHELL`	Shell to use with MATLAB “`!`” or `unix` commands This value is taken from the environment, unless `SHELL` is reset in `.matlab7rc.sh`. The default `.matlab7rc.sh` file does not reset `SHELL`.
`MATLAB_SHELL`	Shell to use instead of `SHELL` MATLAB checks for `MATLAB_SHELL` first. If it is empty or not defined, then checks `SHELL`. If `SHELL` is also empty or not defined, then MATLAB uses the Bourne shell, `/bin/sh`. Use an absolute path for the value of `MATLAB_SHELL`, that is, `/bin/sh`, not simply `sh`. The default `.matlab7rc.sh` file does not reference or set `MATLAB_SHELL`.

The matlab script determines the path of the MATLAB root folder by looking up the folder tree from the matlabroot/bin folder (where the matlab script is located). MATLAB use the MATLAB variable to locate all files within the MATLAB folder tree.

You can change the definition of MATLAB. For example, you might change the definition:

To run a different version of MATLAB
When your system uses certain types of automounting schemes and the path determined by the matlab script is not correct

Version History

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R2022a: OpenGL library options will be removed in a future release

In a future release, the -softwareopengl and -nosoftwareopengl options will be removed. It will no longer be necessary to specify the graphics renderer when these options are removed.

R2019a: `-r` option for non-interactive use is not recommended

To start MATLAB non-interactively, use the -batch option. To start MATLAB interactively, use the -r option.

matlab (Linux)

Syntax

Description

Input Arguments

`option1 ... optionN` — One or more start-up options
strings

Mode Options

Display Options

Set Initial Working Folder

Specify MATLAB Version

Debugging Options

Execute MATLAB Script or Function

Use Single Computational Thread

Disable Searching Custom Java Class Path

OpenGL Library Options

Specify License File

Help Options

Examples

Start MATLAB Without Desktop

Display Current Folder at Start-up

More About

.matlab7rc.sh Start-up File

Version History

R2022a: OpenGL library options will be removed in a future release

R2019a: `-r` option for non-interactive use is not recommended

See Also

Topics

matlab (Linux)

Syntax

Description

Input Arguments

option1 ... optionN — One or more start-up options strings

Mode Options

Display Options

Set Initial Working Folder

Specify MATLAB Version

Debugging Options

Execute MATLAB Script or Function

Use Single Computational Thread

Disable Searching Custom Java Class Path

OpenGL Library Options

Specify License File

Help Options

Examples

Start MATLAB Without Desktop

Display Current Folder at Start-up

More About

.matlab7rc.sh Start-up File

Version History

R2022a: OpenGL library options will be removed in a future release

R2019a: -r option for non-interactive use is not recommended

See Also

Topics

`option1 ... optionN` — One or more start-up options
strings

R2019a: `-r` option for non-interactive use is not recommended