o que significa wget -qO-127.0.0.1?

Question

Eu tentei pesquisar por uma hora agora e ainda sem sorte. Alguém sabe o que esse comando significa?

wget -qO- 127.0.0.1

Eu sei que wget é o utilitário "web get" do Linux e 127.0.0.1 é localhost. Eu não tenho ideia, no entanto, o que significa o -qO- ?

Eu também acredito que o acima é diferente de wget -q -O 127.0.0.1 , já que uma corrida simples no terminal está me dando um resultado diferente.

Observação: estou tentando entender esse comando neste Tutorial do Vagrant - Getting Started .

Muito obrigado antecipadamente.

    

Answer 1

Sua pesquisa-foo está incompleta. Experimente man wget , que diz, em parte:

   -O file
   --output-document=file
       The documents will not be written to the appropriate files, but all will be concatenated together and written to file.  If - is used as
       file, documents will be printed to standard output, disabling link conversion.  (Use ./- to print to a file literally named -.)

       Use of -O is not intended to mean simply "use the name file instead of the one in the URL;" rather, it is analogous to shell
       redirection: wget -O file http://foo is intended to work like wget -O - http://foo > file; file will be truncated immediately, and all
       downloaded content will be written there.

       For this reason, -N (for timestamp-checking) is not supported in combination with -O: since file is always newly created, it will
       always have a very new timestamp. A warning will be issued if this combination is used.

       Similarly, using -r or -p with -O may not work as you expect: Wget won't just download the first file to file and then download the
       rest to their normal names: all downloaded content will be placed in file. This was disabled in version 1.11, but has been reinstated
       (with a warning) in 1.11.2, as there are some cases where this behavior can actually have some use.

       Note that a combination with -k is only permitted when downloading a single document, as in that case it will just convert all relative
       URIs to external ones; -k makes no sense for multiple URIs when they're all being downloaded to a single file; -k can be used only when
       the output is a regular file.

e

   -q
   --quiet
       Turn off Wget's output.

    

Answer 2

Para esse tipo de pergunta, se você tiver um navegador por perto, pode achar útil usar explicahell.com (as man pages podem ser muito tempo para percorrer para encontrar os parâmetros que você está interessado em):