executing os command

[mrzasa]

question is probalby easy but i cannot overcome problem

here is the script i want to be run

commandArray = {}
if (devicechanged['SWRGB'] == 'On') then
-- for i, v in pairs(otherdevices) do print(i, v) end
os.execute('echo -ne "$(echo fbebfff9950000b959d6 | sed -e 's/../\\x&/g')" | nc -u -w1 192.168.12.24 30977')
end
return commandArray

as You see there are " ' " single quotes in expression so whole line cannot be processed - is there any chance someone tell me how to run it ?

side question:

is there any way to get inside LUA device descryption field ?

Best regards

MR

[Egregius]

Puth your code in a shell script and execute that from lua.
Could also be that your quotes need to be escaped \'

[mrzasa]

i did try escape - its not working - script runs but nothing happens so i have no idea what went wrong

[Egregius]

Then put the code in a bash script

Code: Select all

#!/bin/bash
echo -ne "$(echo fbebfff9950000b959d6 | sed -e 's/../\\x&/g')" | nc -u -w1 192.168.12.24 30977

and call it by
os.execute('path/script.sh')

make sure script.sh is executable, sudo chmod +x script.sh

[alfred_j_kwak]

No. I give up.

[mrzasa]

Thing is that next step i want is to get rgb from colour picker (or at least try it) so calling external script is not really i seek since its a. slower b. u cant push parameters that easy. Was thinking about lua script that is able to do it.

[Egregius]

This doesn't work either?
And why would that be slower? Quite sure you can't measure the milliseconds difference.

Code: Select all

#!/bin/bash
RGB="$1"
echo -ne "$(echo $RGB | sed -e 's/../\\x&/g')" | nc -u -w1 192.168.12.24 30977

and call it by
os.execute('path/script.sh fbebfff9950000b959d6')

[mrzasa]

Ye last night i did that, and works quite nice. Thing is its not only a colour - the whole string is hex and contains few other parameters like MAC address, ip etc. (viewtopic.php?f=51&t=7957#p57175)
I was thinking that those could be put in description of device (switch or rgb switch) so u could have 1 script that works with all of them.
That's why i put "side question"
Anyway method You gave here works so thank You for Your effort

[Egregius]

You can sent multiple arguments to the script:

Code: Select all

#!/bin/bash
RGB="$1"
IP="$2"
PORT="$3"
echo -ne "$(echo $RGB | sed -e 's/../\\x&/g')" | nc -u -w1 $IP $PORT

and call it by
os.execute('path/script.sh fbebfff9950000b959d6 192.168.12.24 30977')[/quote]