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/libs/igmpproxy_helper.php line 2:

<?/* vi: set sw=4 ts=4: */

^--^ SC3031 (warning): In POSIX sh, redirecting to/from globs is undefined.

                        ^-- SC2035 (info): Use ./*glob* or -- *glob* so names with dashes won't become options.

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/libs/igmpproxy_helper.php line 3:

$igmp = "/runtime/services/igmpproxy"

^---^ SC2154 (warning): igmp is referenced but not assigned.

      ^-- SC2283 (error): Remove spaces around = to assign (or use [ ] to compare, or quote '=' if literal).

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/libs/igmpproxy_helper.php line 4:

$layout = query("/runtime/device/layout")

^-----^ SC2154 (warning): layout is referenced but not assigned.

        ^-- SC2283 (error): Remove spaces around = to assign (or use [ ] to compare, or quote '=' if literal).

               ^-- SC1036 (error): '(' is invalid here. Did you forget to escape it?

               ^-- SC1088 (error): Parsing stopped here. Invalid use of parentheses?

For more information:

  https://www.shellcheck.net/wiki/SC2283 -- Remove spaces around = to assign ...

  https://www.shellcheck.net/wiki/SC2154 -- igmp is referenced but not assign...

  https://www.shellcheck.net/wiki/SC3031 -- In POSIX sh, redirecting to/from ...

[*] Source file igmpproxy_helper.php