It is a wifi connection with no proxy... I supposing that I removed all proxy configs, and Firefox is working fine. But any terminal command line not works:

  • curl --verbose http://w3c.org say (5) Could not resolve proxy: http.
  • wget http://w3c.org say failed: Name or service not known. wget: unable to resolve host address ‘http’.

About wget error, I tested this change resolv.conf suggestion but no effect.


  • changing URL to https://w3c.org the error messages not changes (say "http").

  • I am using UBUNTU 18 LTS.

  • sudo apt update is working (!).

  • Thanks @Rinzwind, yes, all proxy there! How to remove it? I deleted all changes that I was do in .profile, etc. Jul 26 '19 at 15:04
env | grep -i proxy

will show if there is anything set in the environment. This will remove the variable if one was set:

unset http_proxy
unset ftp_proxy
unset https_proxy

(You can bypass proxy with curl with the --noproxy option)

.wgetrc might have a proxy=on in the settings file. Also check ~/.profile, /etc/profile ~/.bashrc and /etc/environment for any variables that set a proxy.

  • Thanks, unset is working (!), wget alive again! Any problem if I have locate .wgetrc with nothing? Jul 26 '19 at 15:09
  • no mine was empty too :) good job getting it working :)
    – Rinzwind
    Jul 26 '19 at 16:21
  • hum... Not solved: askubuntu.com/q/1161331/439867 Jul 26 '19 at 19:59

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