[BACK]Return to dae CVS log [TXT] [DIR] Up to [Research Unix] / researchv10no / cmd / uucp / doc / rtmdiff

Annotation of researchv10no/cmd/uucp/doc/rtmdiff/dae, revision 1.1

1.1     ! root        1: .Bh
        !             2: Daemons
        !             3: .Sh
        !             4: Data transfer
        !             5: .PP
        !             6: The communication daemon
        !             7: is
        !             8: .I uucico ,
        !             9: rather than
        !            10: .I uuci
        !            11: and
        !            12: .I uuco .
        !            13: If called with no arguments,
        !            14: .I uucico
        !            15: starts in slave mode
        !            16: (like
        !            17: the old
        !            18: .I uuci );
        !            19: if given the flag
        !            20: .B \-r1 ,
        !            21: it starts in master mode,
        !            22: and tries to call out
        !            23: to the system named
        !            24: in a
        !            25: .B \-s system
        !            26: argument
        !            27: (like
        !            28: .I uuco ).
        !            29: Unlike
        !            30: .I uuco ,
        !            31: .I uucico
        !            32: insists that
        !            33: a system be specified.
        !            34: A new program,
        !            35: .I uusched ,
        !            36: searches the spool directory
        !            37: and calls
        !            38: .I uucico
        !            39: once for each system
        !            40: that has work
        !            41: (like
        !            42: .I uuco
        !            43: without arguments).
        !            44: Hence,
        !            45: to call a particular system,
        !            46: use
        !            47: `\c
        !            48: .B "uucico \-r1 \-s" sysname;'
        !            49: to call out to all systems with work queued,
        !            50: `\c
        !            51: .B uusched .'
        !            52: .PP
        !            53: Logins used for incoming traffic
        !            54: should have
        !            55: .I /usr/lib/uucp/uucico
        !            56: as shell,
        !            57: rather than
        !            58: .I uuci .
        !            59: .PP
        !            60: As a compatibility hack,
        !            61: .I uucico
        !            62: is linked to
        !            63: .I uuci
        !            64: and
        !            65: .I uusched
        !            66: is linked to
        !            67: .I uuco.
        !            68: Don't depend on this forever;
        !            69: programs
        !            70: (and password files)
        !            71: which call
        !            72: .I uuci
        !            73: or
        !            74: .I uuco
        !            75: should be fixed.
        !            76: .Sh
        !            77: Remote execution
        !            78: .PP
        !            79: Remote commands
        !            80: called by
        !            81: .I uuxqt
        !            82: are invoked somewhat differently.
        !            83: The old
        !            84: .I uuxqt
        !            85: passed an environment
        !            86: (\c
        !            87: .I environ (7))
        !            88: containing only the definition
        !            89: .B RHOST ,
        !            90: set to the name of the remote system.
        !            91: The command was
        !            92: .I exec ed
        !            93: directly,
        !            94: without involving the shell.
        !            95: The program name argument
        !            96: (\c
        !            97: .I argv [0])
        !            98: was the remote command name
        !            99: given to
        !           100: .I uux ;
        !           101: .I e.g.,
        !           102: .I rmail
        !           103: was invoked with the name
        !           104: .I rmail ,
        !           105: even though it was run
        !           106: with the specific path
        !           107: .I /bin/rmail .
        !           108: The file creation mask
        !           109: (\c
        !           110: .I umask (2))
        !           111: was inherited unchanged from
        !           112: .I uuxqt .
        !           113: .PP
        !           114: In the new system,
        !           115: the remote command
        !           116: inherits environment variables
        !           117: from
        !           118: .I uuxqt ,
        !           119: with four additions:
        !           120: .B PATH
        !           121: is set to
        !           122: .B /bin:/usr/bin ;
        !           123: .B USER
        !           124: to
        !           125: .B uucp ;
        !           126: .B UU_MACHINE
        !           127: to the name of the remote system;
        !           128: .B UU_USER
        !           129: to the login name
        !           130: of the remote user requesting the command.
        !           131: Execution consists of calling
        !           132: .B "/bin/sh \-c
        !           133: with appropriate arguments
        !           134: to set the environment
        !           135: and call the command.
        !           136: For example,
        !           137: if user
        !           138: .I rhino
        !           139: on machine
        !           140: .I hippo
        !           141: sends remote mail
        !           142: to
        !           143: .I sheep ,
        !           144: .I uuxqt
        !           145: might invoke
        !           146: .IP
        !           147: .B
        !           148: sh \-c
        !           149: "PATH=/bin:/usr/bin
        !           150: USER=uucp
        !           151: UU_MACHINE=hippo
        !           152: UU_USER=rhino
        !           153: export PATH UU_MACHINE UU_USER;
        !           154: /bin/rmail sheep"
        !           155: .R
        !           156: .PP
        !           157: .B USER
        !           158: is not exported (why not?).
        !           159: The file creation mask
        !           160: is set to 0.
        !           161: .PP
        !           162: If an explicit pathname for the command
        !           163: is specified in
        !           164: .I Permissions ,
        !           165: that name is fed to the shell,
        !           166: and becomes
        !           167: .I argv [0].
        !           168: .PP
        !           169: Commands which depend on the
        !           170: .I umask
        !           171: or
        !           172: the value of
        !           173: .B PATH ,
        !           174: or which examine
        !           175: .B RHOST ,
        !           176: will need to be changed.
        !           177: .Sh
        !           178: Periodic maintenance
        !           179: .PP
        !           180: .I Uusched
        !           181: and
        !           182: .I uuxqt
        !           183: should be started up periodically,
        !           184: say hourly.
        !           185: .PP
        !           186: .I Uudemon.cleanu *
        !           187: .FS
        !           188: *
        !           189: A victim of V8's refusal to
        !           190: allow filenames
        !           191: even to be expressed in
        !           192: more than 14 characters.
        !           193: .FE
        !           194: cleans up the spool directory.
        !           195: It summarizes the current logfiles,
        !           196: and stores them away.
        !           197: By default,
        !           198: one back copy
        !           199: (yesterday's logs)
        !           200: is kept;
        !           201: more can be saved by
        !           202: specifying the number of days
        !           203: as an argument.
        !           204: Logs are scanned for interesting items,
        !           205: such as failed requests
        !           206: and attempts to steal the password file;
        !           207: anything exciting
        !           208: is mailed to a system administrator.
        !           209: .I Uudemon.cleanu
        !           210: also cleans up dead bodies
        !           211: in the spooling directory;
        !           212: much of this work is done
        !           213: by calling
        !           214: .I uucleanup ,
        !           215: which takes the place
        !           216: of the old
        !           217: .I uuclean .
        !           218: .PP
        !           219: Both
        !           220: .I uudemon.cleanu
        !           221: and
        !           222: .I uudemon.admin
        !           223: look in the environment variable
        !           224: .B mailto
        !           225: for a list of
        !           226: people to grace with mail.
        !           227: If
        !           228: .B mailto
        !           229: is not set,
        !           230: messages are sent
        !           231: to
        !           232: .B uucp .
        !           233: .PP
        !           234: .I Uucrap
        !           235: removes status files
        !           236: which record nothing but the time
        !           237: of the last successful call,
        !           238: and empty spooling directories.
        !           239: This isn't essential,
        !           240: but keeps things cleaner
        !           241: and makes
        !           242: .I uustat
        !           243: less noisy.
        !           244: .PP
        !           245: If a remote machine
        !           246: needs to be polled regularly,
        !           247: it should be entered in
        !           248: .I /usr/lib/uucp/Poll ,
        !           249: and
        !           250: .I uudemon.poll
        !           251: should be run hourly,
        !           252: before
        !           253: .I uusched .
        !           254: This script sets up
        !           255: a dummy command
        !           256: for the system to be polled,
        !           257: so that the next
        !           258: .I uusched
        !           259: will call it.
        !           260: The
        !           261: .I Poll
        !           262: file allows specific hours
        !           263: to be given
        !           264: for the call.
        !           265: .PP
        !           266: A plausible script to be run every hour
        !           267: (usually called
        !           268: .I uudemon.hr )
        !           269: might be
        !           270: .DS
        !           271: .B
        !           272: /usr/lib/uucp/uudemon.poll
        !           273: /usr/lib/uucp/uucrap
        !           274: /usr/lib/uucp/uusched &
        !           275: /usr/lib/uucp/uuxqt &
        !           276: .R
        !           277: .DE
        !           278: .PP
        !           279: A sensible daily script
        !           280: (\c
        !           281: .I uudemon.day )
        !           282: might be
        !           283: .DS
        !           284: .B
        !           285: mailto="fee foe fum" export mailto
        !           286: cd /usr/lib/uucp
        !           287: \&./uudemon.cleanu 7   # save a week's worth of logfiles
        !           288: .R
        !           289: .DE
        !           290: .PP
        !           291: Feel free to customize the maintenance scripts.
        !           292: In particular,
        !           293: .I uudemon.cleanu
        !           294: shoud be fiddled with
        !           295: if you don't care to receive
        !           296: all the junk mail.
        !           297: (They've already been customized a bit;
        !           298: the original
        !           299: .I uudemon.cleanu
        !           300: didn't take arguments.)
        !           301: .Sh
        !           302: Miscellany
        !           303: .PP
        !           304: The shell script
        !           305: .I remote.unknown
        !           306: is invoked
        !           307: when an unknown system calls.
        !           308: The first argument is the system name.
        !           309: The distributed version
        !           310: records the name in
        !           311: .I spool/.Admin/Foreign .
        !           312: If
        !           313: .I remote.unknown
        !           314: doesn't exist
        !           315: or has no execute permissions,
        !           316: calls from unknown systems
        !           317: are accepted.
        !           318: .PP
        !           319: .I IHfix
        !           320: culls out unwanted entries
        !           321: from the NAC distribution.
        !           322: To install a new NAC
        !           323: .I L.sys ,
        !           324: do
        !           325: .IP
        !           326: .B "IHfix Systems NACstuff >Systems.gen
        !           327: .LP
        !           328: You probably don't need to worry about this.
unix.superglobalmegacorp.com

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.