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1.1 ! root 1: .TH NETNEWS 5 ! 2: .CT 1 inst_info ! 3: .SH NAME ! 4: netnews \- usenet news articles, utility files ! 5: .SH DESCRIPTION ! 6: .PP ! 7: There are two formats of news articles: ! 8: A and B. ! 9: Format A is the only format that the older ! 10: .IR netnews (A) ! 11: understands. ! 12: .I Readnews ! 13: and ! 14: .IR postnews (7) ! 15: deal with both formats, but produce B ! 16: by default. ! 17: .PP ! 18: Format A looks like this: ! 19: .LP ! 20: .BI A article-ID ! 21: .br ! 22: .I newsgroups ! 23: .br ! 24: .I path ! 25: .br ! 26: .I date ! 27: .br ! 28: .I title ! 29: .br ! 30: .I body of article ! 31: .br ! 32: .LP ! 33: Format B ! 34: contains two extra pieces of information: receipt date and expiration ! 35: date. ! 36: A file in B format consists of a series of headers and then the body. ! 37: A header ! 38: is a line with a capital letter in the 1st column and ! 39: a colon somewhere on the line. ! 40: Unrecognized header fields are ignored. ! 41: News is stored in whichever format it was created. ! 42: The following fields are among those recognized: ! 43: .IP ! 44: .EX ! 45: From: ! 46: Newsgroups: ! 47: Subject: ! 48: Date: ! 49: Date-Received: ! 50: Expires: ! 51: Reply-To: ! 52: References: \fRID of article this is a follow-up to\fP ! 53: Control: \fRText of a control message\fP ! 54: .EE ! 55: .LP ! 56: Each line of the control file ! 57: .F /usr/lib/news/sys ! 58: file line has four fields, separated by colons: ! 59: .LP ! 60: .IB system-name : subscriptions : flags ":\fItransmission command\fP" ! 61: .PP ! 62: Only the ! 63: .I system-name ! 64: and ! 65: .I subscriptions ! 66: need to be present. ! 67: .PP ! 68: The ! 69: .I system name ! 70: is the name of the system being sent to. ! 71: The ! 72: .I subscriptions ! 73: are the newsgroups it gets. ! 74: The ! 75: .L flags ! 76: are a set of letters describing how the article should be transmitted. ! 77: The default is ! 78: .BR B . ! 79: Valid flags include ! 80: .BR A , ! 81: .BR B , ! 82: .B N ! 83: (use ihave/sendme protocol), ! 84: .B U ! 85: (use ! 86: .L uux -c ! 87: and the name of the stored article in a ! 88: .L %s ! 89: string). ! 90: .LP ! 91: The ! 92: .I transmission command ! 93: is executed by the shell with the article to be transmitted as the standard ! 94: input. ! 95: The default is ! 96: .BI "uux \- \-z \-r " sysname !rnews . ! 97: .LP ! 98: Somewhere in the control ! 99: file, there must be a line for the host system. ! 100: This line has no ! 101: .IR flags ! 102: or ! 103: .I transmission commands. ! 104: A ! 105: .L # ! 106: as the first character in a line denotes a comment. ! 107: .SH FILES ! 108: .TF /usr/spool/netnews/* ! 109: .TP ! 110: .F /usr/lib/news/* ! 111: .TP ! 112: .F /usr/spool/news/* ! 113: .SH SEE ALSO ! 114: .IR postnews (7), ! 115: .IR readnews (7) ! 116: .br ! 117: M. Horton, ! 118: .I ! 119: Standard for the Interchange of USENET Messages, ! 120: RFC850, ! 121: DARPA Information Processing Techniques Office, ! 122: Arlington VA, ! 123: 1983
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