Note: The actual files that hold these lists are in /var/spool/cron but we don’t manually edit them.
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- → Dakika (0-59), Saat (0-23), Gun (1-31), Ay (1-12), Haftanin gunu (0-6 0isSunday)
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Examples:
0 11,16 * * * → 11 ve 16’da
0 11-16 * * * → 11’den 16’ya kadar her saat basi
0 */1 * * * → Saat basi
0-10/2 * * * * * → Ilk 10 dakika her 2 dakikada bir
set: Show all variables
env: Show environmental variables
local: Show local variables
crontab -l : List scheduled jobs
crontab -e : Edit scheduled jobs
/etc/crontab : System-wide cron
Note: Prefer systemd timers For one-time events, you can use at