How can I execute the command line "asterisk -rx "reload"" in c++? Please help. I need an example. I am working on ubuntu server and I want to execute this command line from a user (inside a webservice).

Need help Appreciate

Sounds like a trivial use-case for the system() function:

system("asterisk -rx reload");

If you need very fine-grained control of the child process there are better ways, but this is simple to get going.

This call starts a shell (such as bash) to run the command, which is why I removed the quotes around reload; they're pointless for a single word and will be removed by the shell and never seen by the started program, anyway.