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Annotation of coherent/d/etc/SYSVcron/README.crond, revision 1.1

1.1     ! root        1: Execute commands periodically
        !             2: 
        !             3: CROND command.
        !             4: /etc/crond
        !             5: 
        !             6: crond is a daemon that executes commands at preset times.  The
        !             7: commands and their scheduled execution times are kept in the 
        !             8: /usr/spool/cron/crontabs/file_name, where file_name is the user name
        !             9: from /etc/passwd. To preserve compatibility with cron 3.2.0
        !            10: crond looks for /usr/lib/crontab first. If file exist crond runs 
        !            11: as cron 3.2.0 and never looks for the user's tables. Otherwise,
        !            12: crond looks for user's tables and never will look for /usr/lib/crontab.
        !            13: 
        !            14: When crond execute user crontab it changed effective id to user id,
        !            15: and cd to user $HOME directory.
        !            16: 
        !            17: crond should be executed only once (at boot time). /usr/lib/cron/FIFO
        !            18: is used as a lock file to prevent the execution more than one crond.
        !            19: 
        !            20: If mail options is enabled (default) crond will send mail to the
        !            21: owner of crontab about all commands that failed. 
        !            22: 
        !            23: To allow crond to remove lock file /usr/lib/cron do not send signal
        !            24: KILL to crond. You can use signal TERM. 
        !            25: crond ignores signals INT, HUP, & PIPE. crond uses ALRM signal by itself. 
        !            26: 
        !            27: 
        !            28:        Files and directorys.
        !            29: 
        !            30: /usr/lib/cron                  main cron directory.
        !            31:        700 root root
        !            32: /usr/lib/cron/FIFO             lock file (named pipe).
        !            33:        created by crond; removed by crond/rc
        !            34: /usr/lib/cron/cron.allow       list of allowed users.
        !            35:        600 root root
        !            36: /usr/lib/cron/cron.deny                list of denied users.
        !            37:        600 root root
        !            38: /usr/lib/crontab               old crontab entry. 
        !            39: /usr/spool/cron                        spool directory parent
        !            40:        700 root root
        !            41: /usr/spool/cron/crontabs       spool directory
        !            42:        700 root root
        !            43: 
        !            44: #/usr/lib/cron/log             accounting information (not used).
        !            45: #/etc/default/cron             user config. file (not used).
        !            46: 
        !            47: NOTICE: These two lines should be added to the /etc/rc file:
        !            48:                rm -f /usr/lib/cron/FIFO
        !            49:                /etc/crond&
        !            50: The line:
        !            51:                /etc/cron&
        !            52: should be removed.
        !            53: 
        !            54: Bugs: crond does not write log file. Crond will do it as soon as I will know
        !            55: how this log file should look, and what the reason is to have it.
        !            56: The size of the hostname + domain should not exceed 1000 characters.

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