System() — Executes an operating system command
Executes a command in the
underlying operating system. This application sets a channel variable
named SYSTEMSTATUS to either FAILURE or SUCCESS, depending on whether or not Asterisk
was successfully able to run the command.
This application is very similar to the TrySystem() application, except that it will
return -1 if it is unable to execute
the system command, whereas the TrySystem() application will always return
0.
exten => 123,1,System(echo hello > /tmp/hello.txt)