http://tehbemfqolualhxwkyimu3bdob5s4hkrfuwbwxzbblncjy2j2owgolqd.onion/documentation.html
For example, suppose we want to lists files that may or may not exist: ~ $ touch exists ~ $ ls exists and ls doesnt
exists
/bin/ls: cannot access doesnt: No such file or directory However, if you list the file that doesn't exist first, you would have only seen the error (because ls exists would not run): ~ $ ls doesnt and ls exists
/bin/ls: cannot access doesnt: No such file or directory...