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Annotation of cci/usr/src/man/man1/at.1, revision 1.1

1.1     ! root        1: .TH AT 1 "18 January 1983"
        !             2: .UC 4
        !             3: .SH NAME
        !             4: at \- execute commands at a later time
        !             5: .SH SYNOPSIS
        !             6: .B at
        !             7: time
        !             8: [
        !             9: day
        !            10: ]
        !            11: [
        !            12: file
        !            13: ]
        !            14: .SH DESCRIPTION
        !            15: .I At
        !            16: squirrels away a copy of the named
        !            17: .I file
        !            18: (standard input default)
        !            19: to be used as input to
        !            20: .IR sh (1)
        !            21: (or
        !            22: .IR csh (1)
        !            23: if you normally use it)
        !            24: at a specified later time.
        !            25: A
        !            26: .I cd
        !            27: command to the current directory is inserted
        !            28: at the beginning,
        !            29: followed by assignments to all environment variables (excepting the
        !            30: variable TERM, which is useless in this context.)
        !            31: When the script is run, it uses the user and group ID
        !            32: of the creator of the copy file.
        !            33: .PP
        !            34: The
        !            35: .I time
        !            36: is 1 to 4 digits, with an optional following
        !            37: `A', `P', `N' or `M' for
        !            38: AM, PM, noon or midnight.
        !            39: One and two digit numbers are taken to be hours, three and four digits
        !            40: to be hours and minutes.
        !            41: If no letters follow the digits, a 24 hour clock time is understood.
        !            42: .PP
        !            43: The optional
        !            44: .I day
        !            45: is either
        !            46: (1) a month name followed by a day number,
        !            47: or
        !            48: (2) a day of the week; if the word `week' follows
        !            49: invocation is moved seven days further off.
        !            50: Names of months and days may be recognizably truncated.
        !            51: Examples of legitimate commands are
        !            52: .IP
        !            53: at 8am jan 24
        !            54: .br
        !            55: at 1530 fr week
        !            56: .PP
        !            57: .I At
        !            58: programs are executed by periodic execution
        !            59: of the command
        !            60: .I /usr/lib/atrun
        !            61: from
        !            62: .IR cron (8).
        !            63: The granularity of
        !            64: .I at
        !            65: depends upon how often
        !            66: .I atrun
        !            67: is executed.
        !            68: .PP
        !            69: Standard output or error output is lost unless redirected.
        !            70: .SH FILES
        !            71: .ta 2i
        !            72: /usr/lib/atrun executor (run by 
        !            73: .IR cron (8)).
        !            74: .sp
        !            75: in /usr/spool/at:
        !            76: .ta .5i 2i
        !            77: .br
        !            78: \&     yy.ddd.hhhh.*   activity for year yy, day dd, hour hhhh.
        !            79: .br
        !            80: \&     lasttimedone    last \fIhhhh\fR
        !            81: .br
        !            82: \&     past    activities in progress
        !            83: .SH "SEE ALSO"
        !            84: calendar(1),
        !            85: pwd(1),
        !            86: sleep(1),
        !            87: cron(8)
        !            88: .SH DIAGNOSTICS
        !            89: Complains about various syntax errors and times out of range.
        !            90: .SH BUGS
        !            91: Due to the granularity of the execution of
        !            92: .I /usr/lib/atrun,
        !            93: there may be bugs in scheduling things almost
        !            94: exactly 24 hours into the future.

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