where is the path "/usr/bin/"?

in module "EXT manager"
choose "indexed search engine"
i find these texts"Path to PDF parsers [pdftools]
The indexer uses the applications 'pdftotext' and 'pdfinfo' for extracting content from PDF files. These applications must be installed in this path. Otherwise leave the field empty."

I have downloaded the pdftools.but where is it installed?

for example:
my site baseurl:http://www.example.com/testwebsite/

it contain the folder"fileamdin,typo3,typoconf,t3lib,etc.
i think i should use the relatively path,but not the absolute path.

in the apache-folder

can you tell me the folder structure.
i cannot find it!

ok 😉
first.. sorry for my bad english!
😉

so.. first i shoud ask, where you install Typo3? Local on you computer or already on your server? If it was installed local, you must go under job /hard disk / all programs /typo3-folder/apache.

😉 ok
Sorry for my bad english too!I am a chinese boy!
I have resolved it!
I use the win OS!,so i input the absolue path.like:d:/../../
I think it(/usr/bin/)is the relative path for Linux.

Thanks for you help!