How to pass multiple arguments in a command to execute an exe on remote linux machine using C/C++ and SSH

Question

I have successfully executed my exe on local machine using command "./executable agr1 arg2 arg3 arg4" Then it shows value of argument count to 5. But when I wanted to do this same from a remote linux machine (system2) then I opened up SSH channel using libssh in QT creator then I did following:

1. QString str = "/root/executable arg1 arg2 arg3 arg4";
2. rc = channel_request_exec(channel, str);

Then the exe executed but it showed argument count to 1. Means arguments didn't passed correctly. What is the correct way of doing this ??

Answer 1

Problem is in QString format, use below format

QString str = QString("%1 %2 %3 %4 %5").arg("/root/executable", "arg1", "arg2", "arg3","arg4");

rc = channel_request_exec(channel, str);

Answer 2

After lots of search on Google and Stackoverflow ( and it's variant) I found answer to above problem and that was not exactly a formatting error. The problem is with SSH itself. It doesn't let us specify a command precisely. The correct way to pass a command with multiple arguments is as follows: Const char str[] = "\\"/root/executable arg1 arg2 arg3 arg4\\""; And it worked perfectly.

I found my answer here: https://unix.stackexchange.com/q/80821 https://unix.stackexchange.com/a/80838