this post was submitted on 27 Aug 2024
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👆 that is not a comment. That is a command that says to echo the text "# FYI quotes(" and then to do
) must be escaped like \ \"which is invalid syntax.I assume that startup script is reading the contents of the file and trying to echo them into another file? i.e., using the original file as a template, but is not escaping the input, hence the error — which you’re lucky that’s the problem you’re encountering and not something actually destructive like
sudo echo "# foo" && rm -rf /*.dsygraphia, I meant to say escape the quotes(you can see that because the comment wasn't about comments but was instead about quotes)
It’s all good. If you’re using bash and readline to read the file, you can use
sudo echo ${INPUT@Q}(assuming your variable is named $INPUT) to have bash escape things like the quotes and other characters that could get you into trouble.Sadly no, its injected with terraform
templatefile, I already looked for a normal way to autoescape it, but from a brief look I couldn't find one. I know there is a replace function that can take regex(RE2, which from my understanding prohibits*in lookbehinds)- but the simplest regex I could think of at nearly 6am for capturing only non-escaped quotes is/(?:^|[^\\])(?:(?:\\\\)+|[^\\]|^)(?'quote'")/gm. Though, I just realized if the quotes are escaped I would want to double escape them, so actually replacing all quotes with escaped quotes should be fine, also another limitation of this method is lines can't have trailing\