'system' command error: " /bin/sh: -c: line 0: syntax error near unexpected token `(' "

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Michael 2015-7-14

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评论： Walter Roberson 2019-7-24

I'm running Matlab on Mac OS. Trying to execute the following bash command, which executes without a problem in the bash shell:

join -1 3 -2 1 -o 1.3 <(sort -k3 file1.txt) file2.txt > output.txt

Using Matlab's 'system' command, and passing that string to it I get the following error:

/bin/sh: -c: line 0: syntax error near unexpected token `('

I suspect this is a problem with Matlab using the sh shell instead of Bash. Is there a work around on this?

Thanks!

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Walter Roberson 2015-7-15

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Notice in the documentation:

<<On UNIX, MATLAB uses a shell program to execute the given command. It determines which shell program to use by checking environment variables on your system. MATLAB first checks the MATLAB_SHELL variable, and if either empty or not defined, then checks SHELL. If SHELL is also empty or not defined, MATLAB uses /bin/sh.>>

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Gautam Shetty 2017-2-28

Doesn't work. Putting -nodesktop before -r opens the GUI application, doesn't run on command prompt.

Walter Roberson 2019-7-24

在 MATLAB Online 中打开

 /Applications/MATLAB_R2016b.app/bin/matlab -nojvm -nodesktop -r 'linear_regression(''sample_data1.txt'',1,0)'

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Fardowsa Halane 2019-7-24

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./matlab: line 1: syntax error near unexpected token `='

./matlab: line 1: `function p = pathdef'