KDAriane

h1. Cat

h2. Synopsis

This operator has one parameter, one input and one output. The corresponding shell script executes the parameter as a command, considering the input as the standard input, and copies the result in the output.

h2. Parameters

1 parameter, treated as the command to be executed.

h2. Inputs

2 inputs, the input file and the parameter file for the command.

h2. Outputs

1 output: the result of the command

h2. Shell code

<pre>

cmd=$1; shift

input1=$1; shift

input2=$1; shift

output=$1; shift

cat $input1 | $cmd $input2 > $output

</pre>

h2. Example

This operator is used for filtering the output result of [[rapidMiner]] with "xalan":http://xml.apache.org/xalan-c/ in [[perturbation.aws]].