Launching executable file in R with Linux

General
1

Hello,

I'm trying to execute an R script on Linux using the command-line:
Rscript RUN_TETIS_linux.R

This file contains a command to run an executable.

I could run the Rscript without problem using Windows, with the command:
system2("Tetis.exe")

Using Linux, the executable name is "Linux", without extension, and the command system2("Tetis") into the script doesn't work.

Could anybody help me?

2 
> system("echo 'Hello World!'")
Hello World!
> # create hw.sh script, as follows
> # #! /usr/bin/sh
> # echo "Hello, World!"
> # now save it
> # then make executable with
> # chmod +x hw.sh
> # come back to R
> system("/home/roc/projects/demo/hw.sh")
Hello, World!
>
3

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