TAILIEUCHUNG - solaris 9 user command phần 2

Tham khảo tài liệu 'solaris 9 user command phần 2', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | crontab l EXAMPLE 3 Specifying days of the month and week Continued 0 0 1 15 1 would run a command on the first and fifteenth of each month as well as on every Monday. To specify days by only one field the other field should be set to . For example 0 0 1 would run a command only on Mondays. ENVIRONMENT VARIABLES See environ 5 for descriptions of the following environment variables that affect the execution of crontab LC_TYPE LC_MESSAGES and NLSPATH. EDITOR Determine the editor to be invoked when the -e option is specified. The default editor is ed 1 . If both the EDITOR and VISUAL environment variables are set the value of the VISUAL variable is selected as the editor. EXIT STATUS The following exit values are returned 0 Successful completion. 0 An error occurred. FILES etc main cron directory etc list of allowed users etc default cron contains cron default settings etc list of denied users var cron log accounting information var spool cron crontabs spool area for crontab ATTRIBUTES See attributes 5 for descriptions of the following attributes ATTRIBUTE TYPE ATTRIBUTE VALUE Availability SUNWcsu SEE ALSO atq l atrm l auths l ed 1 sh 1 cron 1M su 1M auth_attr 4 attributes 5 environ 5 NOTES If you inadvertently enter the crontab command with no argument s do not attempt to get out with Control-d. This removes all entries in your crontab file. Instead exit with Control-c. 218 man pages section 1 User Commands Last Revised 3 Dec 2001 crontab l If an authorized user modifies another user s crontab file resulting behavior may be unpredictable. Instead the super-user should first use su 1M to become super-user to the other user s login before making any changes to the crontab file. When updating cron check first for existing crontab entries that may be scheduled close to the time of the update. Such entries may be lost if the update process completes after the scheduled event. This can happen because when cron is notified by .

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