executes a Windows, Linux, or MacOS command
alias of host()
status = host(commands)
status = unix(commands)
Single text containing Windows, Linux, or MacOS instructions sent to the OS command interpreter.
On Windows, commands
must have less than 8191 characters
(after expansion of possibly included environment variables).
integer flag: -1 if the commands
can't be executed
(for instance due to unsufficient memory). If commands
is executed (successfully or not) : exit code number returned by the Operating
System (OS) interpreter.
![]() | With Windows, 0 is most often returned in case of successful execution. |
host(…)
commands
to it,![]() | The opened session of the OS interpreter is a fork of the session homing the current
Scilab session. As a consequence, it has the following properties:
|
The host(…) results as standard output and standard errors are written in the terminal from which the Scilab session has been launched (a.k.a. the consolebox for MS Windows)..
![]() | host() shall be preferred to its unix() alias, whose name is misleading. |
![]() | On MS Windows, host("cls") CLears the consolebox Screen. |
Current working directory in the host() and Scilab OS interpreter respective sessions:
pwd // Current working directory of the Scilab session if getos()=="Windows" host cls; consolebox on; host cd; // Starting working directory in the OS interpreter session else host pwd; end // The paths in the OS terminal/consolebox and in the Scilab console are the same <<== | ![]() | ![]() |
Display in the OS terminal (consolebox):
host cls; host "echo Scilab host() function"; host "echo A & echo BC"; host("echo DEF"+ascii(10)+"echo G"); host("echo Current working directory: & cd"); host dira; // => error: unknown command | ![]() | ![]() |
Scilab host() function A BC DEF Current working directory: C:\Scilab\tests 'dira' is not a known internal or external command, executable program, or batch file.
Environment variables in the Scilab and host() sessions:
setenv TEST AAAA; getenv NUMBER_OF_PROCESSORS host cls; host "echo %TEST%"; host "echo %USERNAME% %NUMBER_OF_PROCESSORS%"; host "set TEST=BBBB"; getenv TEST | ![]() | ![]() |
--> setenv TEST AAAA; --> getenv NUMBER_OF_PROCESSORS ans = 2 --> host cls; --> host "echo %TEST%"; : AAAA --> host "echo %USERNAME% %NUMBER_OF_PROCESSORS%"; : Samuel 2 --> host "set TEST=BBBB" // well done: ans = 0. --> getenv TEST ans = AAAA
Portable openURL() function based on host():