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/scripts/setdate.sh line 2:
echo [$0] $1 $2 $3 ... > /dev/console
      ^-- SC2086 (info): Double quote to prevent globbing and word splitting.
          ^-- SC2086 (info): Double quote to prevent globbing and word splitting.
             ^-- 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" "$2" "$3" ... > /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/scripts/setdate.sh line 7:
Y=`echo $1 | cut -d/ -f3`
  ^---------------------^ SC2006 (style): Use $(...) notation instead of legacy backticks `...`.
        ^-- SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean:
Y=$(echo "$1" | cut -d/ -f3)


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/scripts/setdate.sh line 8:
M=`echo $1 | cut -d/ -f1`
  ^---------------------^ SC2006 (style): Use $(...) notation instead of legacy backticks `...`.
        ^-- SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean:
M=$(echo "$1" | cut -d/ -f1)


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/scripts/setdate.sh line 9:
D=`echo $1 | cut -d/ -f2`
  ^---------------------^ SC2006 (style): Use $(...) notation instead of legacy backticks `...`.
        ^-- SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean:
D=$(echo "$1" | cut -d/ -f2)


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/scripts/setdate.sh line 10:
T=`date +%H:%M:%S`
  ^--------------^ SC2006 (style): Use $(...) notation instead of legacy backticks `...`.

Did you mean:
T=$(date +%H:%M:%S)

For more information:
  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...
  https://www.shellcheck.net/wiki/SC2006 -- Use $(...) notation instead of le...

[*] Source file setdate.sh