Tries to execute a shell command.

TrySystem(command)

Like System(), it executes a command on the shell (sh or its equivalents), but always returns 0. In contrast, System() returns -1 on error.

Sets the channel variable SYSTEMSTATUS to SUCCESS, FAILURE or APPERROR (command was run but returned an exit code other than 0).

exten => 123,1,TrySystem(echo 'Hey World' > /tmp/hey.txt)

  -= Info about application 'TrySystem' =- 

[Synopsis]
Try executing a system command

[Description]
  TrySystem(command): Executes a command  by  using  system().
on any situation.
Result of execution is returned in the SYSTEMSTATUS channel variable:
   FAILURE  Could not execute the specified command
   SUCCESS  Specified command successfully executed
   APPERROR Specified command successfully executed, but returned error code

Old behaviour:
If  the command itself executes but is in error, and if
there exists a priority n + 101, where 'n' is the priority of the current
instance, then  the  channel  will  be  setup  to continue at that
priority level.  Otherwise, System will terminate.

- none -