Notes About Using Cron

Notes About Using Cron

################################################################################
# Minute    Hour       Day of Month       Month                   Day of Week        Command
# (0-59)     (0-23)     (1-31)                (1-12 or Jan-Dec)  (0-6 or Sun-Sat)
################################################################################

() Run a cronjob and use the current date/time in the command
1 0 * * * mv fileA fileA__$(date +\%m.\%d.\%C\%y_\%H:\%M:\%S).log >> /var/log/fileA_move_output_$(date +\%m\%d\%C\%y).log 2>&1

() Clean up log files based on date - Older than 6 days and then remove it
1 0 * * * find /var/log/ -name '*_output*.log' -mtime +6 -exec rm {} \; >> /var/log/Cleanupcron_output_$(date +\%m\%d\%C\%y).log 2>&1

() Run cronjob on first Saturday of month
* * 1-7 * * [ "`date +\%a`" = "Sat" ] && /home/build/test.sh >> /var/log/TEST_output_$(date +\%m\%d\%C\%y).log 2>&1