Invoke command line scripts

Actions may now invoke command-line scripts, from v3.6.0. The action

myString=`perl -v

runs the command

perl -v

and copies its standard output to the user string attribute myString.

The command is interpreted by /bin/sh .

The ` operator is not handled as a conventional unary operator, like negate (-). Tinderbox will do full variable interpolation, and the command may be assembled from other attributes and references:

myString=`$Command(parent)

So, the ` operator applies to everything up to the succeeding semicolon or the end of the command.

myString=`ls -l;Color=red;BorderColor=white;

The command may thus contain spaces. The command begins with the first non-white-space character following the `, and continues to the first semicolon. For example:

myString=`perl -v;Color=red;myDir=`pwd

Attribute interpolation is applied to the entire command line

Delivered=`myQuery $TrackingID $UserName(parent)

If you need to include the $ character in a command, escape it with backslash.

Interpolated attribute names are terminated when Tinderbox reaches the end of the command, a character that can't be part of an attribute name (e.g. white space), or a second $. Thus, if $AccountNumber holds the string "3716",

Delivered=`myDatebaseQuery $AccountNumber$x31

would create the command:

myDatabaseQuery 3716x31

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