Running shell script from within the DialPlan

[pbudden]

Done:

bash-4.1$ ls -la *.sh -rwxr-xr-x 1 asterisk asterisk 174 Nov 25 12:37 off.sh -rwxr-xr-x 1 asterisk asterisk 184 Nov 25 12:35 on.sh bash-4.1$

no change…

it is almost like Asterisk is prevented from actually running anything…
But Asterisk will write to a file so there is some I/O.

I see posts where people have had issues, but no resolution.
Indeed there was one with the same title as this post from 2013:

Running shell script from within the DialPlan

Hi all, I have searched long and hard for an answer to the problem that I face and so far have not found it. Here is the situation: I have FreePBX 4.211.64-5 installed and running. 20 SIP phones run fine, incoming POTS line is fine on Digium card. I have it connected to my bell system (installation is in a school) so that we can do overhead paging. I have an extension setup for the paging. Here it is in brief: [from-internal-custom] exten => 8,1,Answer() same => n,System(/etc/asterisk/u…

The System and TrySystem command, while documented, do really work as described?

Thanks

Paul