execute script with C++ [duplicate]

Question

I want to execute a script through a c++ program and get its output. Presently I am doing

system("./script.sh > out.txt");

But I need a command that get the output to a string, some thing like:

out = system("./script.sh");
printf(out);

I can't read the file out.txt after execute the script because I don't have permission to that. I deployed my c++ program at other framework (boinc) that doesn't give me this permission.

Does anybody have a hint? Thanks in advance! Felipe

Change the file permission with chmod in the system routine? — Eric
– Eric, Commented Apr 26, 2013 at 11:32
duplicate. Please look stackoverflow.com/questions/478898/… — fnc12
– fnc12, Commented Sep 25, 2015 at 8:57

MOHAMED · Accepted Answer · 2013-04-26 13:21:02Z

1

you can use popen() and then get the output of the command from the pipe opened by popen()

FILE  *fp;
fp=popen("./script.sh","r");

and to get your output. you can use fgets() or fread() to read from pipe like you read from a file

answered Apr 26, 2013 at 13:21

MOHAMED

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