special characters in http_proxy environment variable

JAR asked:

What is the correct format using special characters in http_proxy environment variable?
Or to be mor specific, what to do with special characters in username or password when authenticate to http proxy on the command line.

My answer:


Suppose your username is foo and your password is bar$.

Quote them:

http_proxy='http://foo:bar$@localhost:3128/' wget http://www.google.com/

Or escape them:

http_proxy=http://foo:bar$@localhost:3128/ wget http://www.google.com/

What if your password is bar/? URL encode them.

http_proxy="http://foo:bar%2F@localhost:3128/" wget http://www.google.com/

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