September 2005
Intermediate to advanced
408 pages
16h 20m
English
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Name
TrySystem() — Tries to execute an operating system command
Synopsis
TrySystem(command)Attempts to execute a command in the
underlying operating system. If the command itself executes but is in
error, and if there exists a priority n+101 (where n is the current priority), the execution of
the dialplan will continue at that priority level.
This application is very similar to the System() application, except that it always
returns 0, whereas the System() application will return -1 if it is unable to execute the system
command.
exten => 123,1,TrySystem(echo hello > /tmp/hello.txt)