In /logs/firmware/unblob_extracted/firmware_extract/DIR-600_fw_revb5_214b01_ALL_de_20130122/dir600b_v2.14_d1mg.bin_extract/1179788-3612812.squashfs_v4_le_extract/etc/events/WAN-DETECT.sh line 2:

echo [$0] [$1] ... > /dev/console

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

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

Did you mean:

echo ["$0"] ["$1"] ... > /dev/console

In /logs/firmware/unblob_extracted/firmware_extract/DIR-600_fw_revb5_214b01_ALL_de_20130122/dir600b_v2.14_d1mg.bin_extract/1179788-3612812.squashfs_v4_le_extract/etc/events/WAN-DETECT.sh line 3:

xmldbc -P /etc/events/WAN-DETECT.php -V INF=$1 > /var/run/$1_DETECT.sh

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

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

Did you mean:

xmldbc -P /etc/events/WAN-DETECT.php -V INF="$1" > /var/run/"$1"_DETECT.sh

In /logs/firmware/unblob_extracted/firmware_extract/DIR-600_fw_revb5_214b01_ALL_de_20130122/dir600b_v2.14_d1mg.bin_extract/1179788-3612812.squashfs_v4_le_extract/etc/events/WAN-DETECT.sh line 4:

sh /var/run/$1_DETECT.sh

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

Did you mean:

sh /var/run/"$1"_DETECT.sh

For more information:

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

[*] Source file WAN-DETECT.sh