Greetings, cyg Simple! > On 3/24/2016 11:43 AM, Dirk Fassbender wrote: >> Am 24.03.2016 um 15:12 schrieb Unknown Sender: >>> I noticed this bug for the first time today on a computer that has the >>> computer name "-" (dash). >>> >>> During ssh-host-config: >>> *** Query: Do you want to use a different name? (yes/no) no >>> /usr/bin/getent: invalid option -- '+' >>> Try `getent --help' or `getent --usage' for more information. >>> *** Query: Create new privileged user account '-\cyg_server' (Cygwin >>> name: 'cyg_server')? (yes/no) yes >>> >>> I suspect this has to do with the computer name because getent & >>> ssh-host-config have never failed this way for me before. Moreover >>> getent seems to be able to query the computer name, and the error >>> message makes me think that it may be connected. >>> >>> I included the 2nd query just to show that it continued the process >>> after the error occurred. I'm not sure if this error is going to cause >>> problems down the line. >>> >>> Will I be encountering tons of problems with a computer name of "-"? >>> It seems to only be a problem right here & right now. >>> >> Hello, >> >> the computer name "-" (dash) is illegal in the internet.
> Uh, that isn't true. >> So many network utilities will have problems with this name. >> > This might be true but doesn't invalidate the use of the hyphen. >> See >> https://en.wikipedia.org/wiki/Hostname >> for a start about host name definitions. >> > From this reference: > "The Internet standards (Requests for Comments) for protocols mandate > that component hostname labels may contain only the ASCII letters 'a' > through 'z' (in a case-insensitive manner), the digits '0' through '9', > and the hyphen ('-'). The original specification of hostnames in RFC > 952, mandated that labels could not start with a digit or with a hyphen, > and must not end with a hyphen." > Note that hyphen (a.k.a. dash) is permitted. http://tools.ietf.org/html/rfc1034#section-3.5 <label> ::= <letter> [ [ <ldh-str> ] <let-dig> ] <ldh-str> ::= <let-dig-hyp> | <let-dig-hyp> <ldh-str> <let-dig-hyp> ::= <let-dig> | "-" <let-dig> ::= <letter> | <digit> <letter> ::= any one of the 52 alphabetic characters A through Z in upper case and a through z in lower case <digit> ::= any one of the ten digits 0 through 9 Even if http://tools.ietf.org/html/rfc2181#section-11 somewhat contradicts to it, it still makes a strong case for interoperability. -- With best regards, Andrey Repin Friday, March 25, 2016 02:04:28 Sorry for my terrible english... -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
