IOUG Tips & Best Practices Booklet 2013 - (Page 31)
Cron Jobs: Best Practices and
Troubleshooting
By Yong Huang
UNIX cron dates back to late 1970s, according to the Wikipedia entry
(https://en.wikipedia.org/wiki/Cron#History). Its maturity and
robustness are unmatched by any other scheduling facility. This short tip
discusses aspects of scheduling a cron job that are not obvious to common
users and suggests best practices. It assumes LINUX as the operating
system, unless otherwise noted.
Cron Environment
By far the most common problems with a cron job are related to its
minimal environment setting. You can see the cron job environment after
running this job: