Matlab system command doesn't work properly on linux platform

13 Ansichten (letzte 30 Tage)
Janne Karjalainen
Janne Karjalainen am 22 Mai 2020
When execute system('hostname -s') -command in matlab, process go to linux command line and in linux command line making exit command, process will go back to matlab command line with hostname.
Example run:
>> system('hostname -s')
[j...al@oulng208 users3/j...al]$exit
exit
oulng208
ans =
0
>>
Why matlab goes to linux command line? It should stay in matlab.
  2 Kommentare
Rik
Rik am 22 Mai 2020
What do you mean? The purpose of the system function is to call the OS command line.
Janne Karjalainen
Janne Karjalainen am 22 Mai 2020
Yes, purpose is to get hostname from OS in matlab, somehow matlab is directing to linux command line.

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Antworten (2)

Rik
Rik am 22 Mai 2020
If you want to capture the output to a Matlab variable, you should use the second output:
[status,response]=system('hostname -s');
I don't have Matlab installed on my Ubuntu VM, but this works in Octave, so it should do the trick.

Walter Roberson
Walter Roberson am 22 Mai 2020
https://www.gnu.org/software/bash/manual/html_node/Bash-Startup-Files.html
You have a BASH_ENV or equivalent for your shell, that is triggering interactive execution for the non-interactive case.
Hypothetically there could also be issues if you have SHELL environment variable set to include flags that should not be set for non-interactive work.
  1 Kommentar
Janne Karjalainen
Janne Karjalainen am 22 Mai 2020
Issue was caused by shell environment change. Originally shell is tcsh and before staring matlab it is changed to bash. I fixed to tsch and now system commands are working in matlab. Thanks for comments!

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