In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/bin/humidity_status.sh line 21:

while [ $i -lt $nbr_of_humidity_sensors ]; do

               ^----------------------^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

while [ $i -lt "$nbr_of_humidity_sensors" ]; do

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/bin/humidity_status.sh line 27:

	hum=$(echo $hum)

            ^----------^ SC2116 (style): Useless echo? Instead of 'cmd $(echo foo)', just use 'cmd foo'.

                   ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

	hum=$(echo "$hum")

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/bin/humidity_status.sh line 31:

		printf "Sensor S%d: %.0f %%\n" $i $hum

                                                  ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

		printf "Sensor S%d: %.0f %%\n" $i "$hum"

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/bin/humidity_status.sh line 35:

	i=$(($i + 1))

             ^-- SC2004 (style): $/${} is unnecessary on arithmetic variables.

For more information:

  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...

  https://www.shellcheck.net/wiki/SC2004 -- $/${} is unnecessary on arithmeti...

  https://www.shellcheck.net/wiki/SC2116 -- Useless echo? Instead of 'cmd $(e...