On: HTTP: , FTP:, and Dict:?

[jmillikin]

What do you think the post would have contained if he had run dict?

Here's a hint:

  macbook% dict
  zsh: command not found: dict
  desktop$ dict
  bash: dict: command not found

You'd have to be pretty into retro-computing before you'll find an OS that ships /usr/bin/dict .

[politelemon → jmillikin]

Not really... FWIW, addressing the 'hint' you're giving specifically, this is on Ubuntu.

    $ dict
    Command 'dict' not found, but can be installed with:
    sudo apt install dict

After installing,

    $ dict example
    6 definitions found
    ...

[jmillikin → politelemon]

So the causal chain would be:

1. Notice a URL scheme dict://

2. Try to type 'dict' into a terminal, on the off chance there's a command-line tool with the same name (would you do this for https:// and expect the same outcome?)

3. Be running a distribution that modifies the user's shell environment to suggest packages related to unknown commands

4. Actually install and run that command

5. Be running tcpdump or wireshark at the same time to notice that the `dict` command is reaching out to the network, as opposed to doing some sort of local lookup in /usr/share/dict

6. Figure out from the network traffic that the tool is using a dictionary-specific protocol as opposed to just making an HTTP request to dictionary.com or whatever.

--

Nah, the only way someone would know (or even suspect!) that dict:// is somehow related to an ancient Unix command-line tool is prior knowledge, and it's unreasonable to expect the article author to have somehow intuited such an idea.

[bubblesnort → jmillikin]

HTTP is the weird protocol here. Lots of protocols were named after the program (or vice versa).

finger, ftp, ssh, talk, telnet, tftp, maybe whois too?

[kragen → bubblesnort]

also gopher. mail and dns are two other exceptions tho

[kragen → jmillikin]

right, the causal chain would be that the author already used the dict command and had at some point read the man page, which begins

    DICT(1)                                                                DICT(1)

    NAME
           dict - DICT Protocol Client

    SYNOPSIS
           (...)

    DESCRIPTION
           dict  is  a  client  for  the  Dictionary Server Protocol (DICT), (...)

but, yeah, not everybody has that background

which is fine! nobody is born knowing all the unix commands