Schedule a job

Schedule a job
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This topic describes how to schedule a job using the cron tool.

Other scheduling tools can also be used. Refer to the documentation of the scheduling tool for information on how to use the tool.

Jobs that are defined in the following format: minute hour day month dayofweek user command

Option	Option description
minute	The minute the job is executed. Value: 0–59
hour	The hour the job is executed. Value: 0–23
day	The day the job is executed. Value: 1–31 or * for no value. Value must be valid for the month.
month	The month the job is executed. 1–12 or * for no value.
dayofweek	The day of the week the job is executed. Value: 0 to 7 or the short name of the week such as sun or mon. Or * for no value. . 0 or 7 =Sunday, 1 = Monday, and so on.
user	The user who runs the script.
command	The command to execute. A command can be a standard Linux command or a custom script.

Add the following lines to schedule a backup:

# Backup the LCM system every Saturday at 1:01AM

# the backup file is in the default path /tmp/backup/

1 1 *  * 6 lps /opt/lps/current/bin/backup_lcm_system.sh

Perform the following steps:

1	Log in to any local CM node as "root" user.
2	Change directory to /etc.
3	Edit the crontab file and include the job you want to schedule. Use the format: `minute hour day month dayofweek user command`.
4	Restart the cron service. Type the following command and press ENTER: `/etc/init.d/crond restart` Result: The system prompts: `Stopping crond: [ OK ] Starting crond: [ OK ]` End of steps

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