Thread:Support/About MediaWiki:Scribunto-luastandalone-write-error/en and MediaWiki:Scribunto-luastandalone-read-error/en/reply

Most likely a unix pipe is meant, similar to an electronic pipeline data. That is a part of the unix filesystem. It's used to move data from one active process to another. Pipes are automatically created when you use unix command chains such as  which creates a list of all files in the current directory sends that to the command   which filters all but those names ending in   and pipes its output into the final command which deletes the selected files. The character "|" is called th pipe character because of its use originating in unix, but since having been taken on by several other operating systems as well.

If that is all gibberish to you, you likely should leave "pipe" untranslated. or find a person familiar with both the operating system stuff and your language, to assist you.