Bourne shells are very whitespace sensitive. Adding or removing spaces can drastically alter the meaning of a script

[philipjonsen]

Description

Bourne shells are very whitespace sensitive. Adding or removing spaces can drastically alter the meaning of a script. In these cases, you're missing a space at the position indicated.

Problematic code:

if [ "$STUFF" = ""]; then

Correct code:

if [ "$STUFF" = "" ]; then

Fix:
You need a space before the ] here:
https://github.com/chainlink/blob/develop/core/scripts/install-protoc.sh#L27-L27