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How to find the date in a cron script?
To see if your particular cron will run the command out of crontab as a script in and of itself, or if you need to write a script that figures out the date as a string, and then runs your mysqldump command. Without escaping the %, “cron” on Redhat Enterprise Linux 5.0 (I think) kept giving me errors about not finding a matching ).
How to run Cron script out of crontab?
You could try something like this (as glenn jackmann notes below, you have to escape all % characters): To see if your particular cron will run the command out of crontab as a script in and of itself, or if you need to write a script that figures out the date as a string, and then runs your mysqldump command.
Why is cron job not running with same user?
The cron job doesn’t run with the same user with which you are executing the script manually – so it doesn’t have access to the same $PATH variable as your user which means it can’t locate the Java executable to execute the commands in the script. We should first fetch the value of PATH variable as below and then set it (export) in the script –
Why does PPPD not work when running from cron?
Through our discussion in comments we confirmed that the script itself works, but pppd doesn’t, when running from cron. This is because something must be different in an interactive shell like your terminal window, and in cron. This kind of problem is very common by the way.
What does it mean to schedule tasks in Cron?
Cron is named after Greek word “Chronos” that is used for time. This guide provides an overview of how to schedule tasks with crontab and how to using cron’s special syntax. Above all, a crontab file is a simple text file containing a list of commands meant to be run at specified times.
How does the cron daemon work in Linux?
The Cron daemon is a built-in Linux utility that runs processes on your system at a scheduled time. Cron reads the crontab (cron tables) for predefined commands and scripts. By using a specific syntax, you can configure a cron job to schedule scripts or other commands to run automatically.