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Annotation of researchv10dc/man/adm/man1/at.1, revision 1.1

1.1     ! root        1: .TH AT 1
        !             2: .CT 1 time_man
        !             3: .SH NAME
        !             4: at \(mi execute commands at a later time
        !             5: .SH SYNOPSIS
        !             6: .B at
        !             7: [
        !             8: .B -r
        !             9: ]
        !            10: .I time
        !            11: [
        !            12: .I day
        !            13: ]
        !            14: [
        !            15: .I file
        !            16: ]
        !            17: .PP
        !            18: .B at -l
        !            19: .SH DESCRIPTION
        !            20: .I At
        !            21: squirrels away a copy of the named
        !            22: .I file
        !            23: (standard input default)
        !            24: to be used as input to
        !            25: .IR sh (1)
        !            26: at a specified later time.
        !            27: A
        !            28: .I cd
        !            29: command to the current directory is inserted
        !            30: at the beginning,
        !            31: followed by assignments to all environment variables.
        !            32: When the script is run, it uses the userid and groupid
        !            33: of the creator of the copy.
        !            34: .PP
        !            35: The
        !            36: .I time
        !            37: is 1 to 4 digits, with an optional following
        !            38: .LR A ,
        !            39: .LR P ,
        !            40: .L N
        !            41: or 
        !            42: .L M
        !            43: for
        !            44: AM, PM, noon or midnight.
        !            45: One and two digit numbers are taken to be hours, three and four digits
        !            46: to be hours and minutes.
        !            47: If no letters follow the digits, a 24 hour clock time is understood.
        !            48: .PP
        !            49: The optional
        !            50: .I day
        !            51: is either a month name followed by a day number,
        !            52: or a day of the week; if the word
        !            53: .L week
        !            54: follows, invocation is moved seven days further off.
        !            55: Names of months and days may be recognizably truncated.
        !            56: A year number, spelled out in full, may follow the month.
        !            57: .PP
        !            58: The options are
        !            59: .TP
        !            60: .B -r
        !            61: Remove the specified activity.
        !            62: .TP
        !            63: .B -l
        !            64: List all activities scheduled for this user.
        !            65: .PP
        !            66: .I At
        !            67: programs are executed by periodic execution
        !            68: of
        !            69: .F /usr/lib/atrun
        !            70: from
        !            71: .IR cron (8).
        !            72: The granularity of
        !            73: .I at
        !            74: depends upon how often
        !            75: .I atrun
        !            76: is executed.
        !            77: .PP
        !            78: The standard output and standard error files are lost unless redirected.
        !            79: .SH EXAMPLES
        !            80: .EX
        !            81: at 0800 dec 24
        !            82: echo ho ho ho | mail claus
        !            83: .EE
        !            84: .TP
        !            85: .L
        !            86: at -r `at -l`
        !            87: Remove a scheduled activity.
        !            88: .SH FILES
        !            89: .TF /usr/spool/at/yy.ddd.hhmm
        !            90: .TP
        !            91: .F /usr/lib/atrun
        !            92: .TP
        !            93: .BI  /usr/spool/at/ yy . ddd . hhmm\fP.*
        !            94: activity for year, day, hour
        !            95: .TP
        !            96: .F /usr/spool/at/lasttimedone
        !            97: last
        !            98: .I hhmm
        !            99: .TP
        !           100: .F /usr/spool/at/past
        !           101: activities in progress
        !           102: .SH "SEE ALSO"
        !           103: .IR calendar (1),
        !           104: .IR pwd (1),
        !           105: .IR sleep (1),
        !           106: .IR cron (8)
        !           107: .SH BUGS
        !           108: Due to the granularity of the execution of
        !           109: .I atrun,
        !           110: there may be bugs in scheduling things almost
        !           111: exactly 24 hours into the future.

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