Avaya Writing Technician Interface Scripts Manuale Utente Scaricare il pdf (Pagina 56)

Writing Technician Interface Scripts

2-28 117382-A Rev. A

on error

The on error command allows you to specify an error handler label within a script

ﬁle. If a command returns an error or if the user attempts to abort the script ﬁle,

the script interpreter goes to the error handler label deﬁned in the ﬁle. If you press

Ctrl-c to abort the script, the Technician Interface displays the following prompt:

Terminate script file? (y/n):

Syntax

The on error command has the following syntax:

on error [-s] :

<label>

-s

allows the script to recover without returning an error message if the on error

command cannot locate a speciﬁed ﬁle.

<label>

is the name of the error handler label.

Example

In the following script, the script interpreter goes to the label

:ERROR_HANDLER: when an error occurs:

on error :ERROR_HANDLER:

echo “what

echo “this line is skipped due to the above”

echo “syntax error. (Missing quote)”

:ERROR_HANDLER:

echo “The error handler is called because of the”

echo “deliberate syntax error in the previous command.”

The error handler is automatically canceled after an error is found or if you issue

the

on error command without a label.

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Avaya Writing Technician Interface Scripts Manuale Utente Pagina 56