I use an exec node to execute a command that queries UPS system status and returns textual data as shown in the command line snippet below. I want to display this output in the dashboard just as it is, or with two columns where the left column contains the attribute and the right column contains the corresponding value. Unfortunately, the exec node strips out whitespace and newlines or the output could easily be displayed in a UI template node. Is there a way to run a linux command and capture the unmolested output? I suppose this could be done with a custom function.
Here is the invocation and output for the apcaccess command. I can pipe the output to appropriate linux commands to format as needed (running on a Pi), such as sed or awk I guess. It just seems like a lot of effort to start with the format I already want in linux and perform a bunch of steps to get back to it in the node-red dashboard.
I am looking for the obvious "easy button" solution I have missed.
pi@NetMon:~/netmon/logs $ apcaccess -f /etc/apcupsd/apcupsd.upsCOMMS.conf APC : 001,036,0869 DATE : 2021-03-01 22:30:48 -0500 HOSTNAME : NetMon VERSION : 3.14.14 (31 May 2016) debian UPSNAME : upsCOMMS CABLE : USB Cable DRIVER : USB UPS Driver UPSMODE : Stand Alone STARTTIME: 2021-03-01 17:39:52 -0500 MODEL : J25B AV UPS STATUS : ONLINE LINEV : 124.0 Volts LOADPCT : 3.0 Percent BCHARGE : 100.0 Percent TIMELEFT : 116.5 Minutes MBATTCHG : 5 Percent MINTIMEL : 3 Minutes MAXTIME : 0 Seconds SENSE : Medium LOTRANS : 96.0 Volts HITRANS : 136.0 Volts ALARMDEL : No alarm BATTV : 27.0 Volts LASTXFER : Automatic or explicit self test NUMXFERS : 0 TONBATT : 0 Seconds CUMONBATT: 0 Seconds XOFFBATT : N/A SELFTEST : NO STATFLAG : 0x05000008 SERIALNO : QB1048332151 BATTDATE : 2010-11-26 NOMINV : 120 Volts NOMBATTV : 24.0 Volts NOMPOWER : 865 Watts FIRMWARE : 873.P2 .D USB FW:P2 END APC : 2021-03-01 22:31:36 -0500 pi@NetMon:~/netmon/logs $