Add Item in a executeCommandLine

Setup, Configuration and Use Scripts & Rules
1

Hey guys,

is there a way to implement an item in a executeCommandLine?

rule "SmartTable"
when
    Item SmartTable changed
then
    executeCommandLine("ssh pi@192.168.178.49 omxplayer /home/pi/Desktop/GameTable/"+ SmartTable +".mp4")

end

As you see, i want in the executeCommandLine an ttem called SmartTable to be added to the String.

When i set SmartTable to “Halloween” i want it to send the command

ssh pi@192.168.178.49 omxplayer /home/pi/Desktop/GameTable/Halloween.mp4

automatically. Unfortunately, my setup isnt working like this.

2

Have a look at this thread: [SOLVED] executeCommandLine inject variable

It describes how to concatenate the string you need during runtime.
Instead of using “+” you need to use StringVariable.append to concatenate your string components.

3

Thanks for your quick reply.

So for my understanding the code needs to look like this:

var video = SmartTable
val StringBuilder myCommand = new StringBuilder
myCommand.append(ssh pi@192.168.178.49 omxplayer /home/pi/Desktop/GameTable/)
myCommand.append(video)
myCommand.append(.mp4)

executeCommandLine(myCommand.toString, 200)

Am i right?

My Filename must be storaged in a String-Item. Can i add the item this easily to the variable using “var video = SmartTable”?

4

You need to add double quotes around the string containing the ‘fixed’ strings.
To put the string of the item SmartTable into the variable video you need add .toString ( ? ) to SmartTable.

5 
var video = SmartTable.toString
val StringBuilder myCommand = new StringBuilder
myCommand.append("ssh pi@192.168.178.49 omxplayer /home/pi/Desktop/GameTable/")
myCommand.append(video)
myCommand.append(".mp4")

executeCommandLine(myCommand.toString, 200)

Like this? The Item SmartTable is already a String-Item. Is it still necessary to add “.toString” to the SmartTable Item?

6

Try it…
Write the string myCommand to the openhab log file and check if it is as you would like to have it:

logInfo("SmartTable rule", "my command string: {}", myCommand.toString )
7

Since SmartTable is an Item, you need to get its State first. It will be a StringType, which you can then convert it to a string with .toString. Also, since video is not changing, use val instead of var.

val video = SmartTable.state.toString
8

Thanks for all of your replies.

I fixed it using this:

rule "Mapauswahl"
when
    Item SmartTable changed
then
    val video = SmartTable.state.toString
    val StringBuilder myCommand = new StringBuilder
    myCommand.append("ssh pi@192.168.178.49 omxplayer \"/home/pi/Desktop/GameTable/")
    myCommand.append(video)
    myCommand.append(".mp4\" --loop --no-osd")
    executeCommandLine(myCommand.toString)
end
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