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Annotation of coherent/d/etc/SYSVcron/README.crond, revision 1.1.1.1

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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