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man 5 crontab
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These special time specification "nicknames" are supported, which replace the 5
initial time and date fields, and are prefixed by the 鈥橜鈥?character:
@reboot : Run once, at startup.
@yearly : Run once a year, ie. "0 0 1 1 *".
@annually : Run once a year, ie. "0 0 1 1 *".
@monthly : Run once a month, ie. "0 0 1 * *".
@weekly : Run once a week, ie. "0 0 * * 0".
@daily : Run once a day, ie. "0 0 * * *".
@hourly : Run once an hour, ie. "0 * * * *". |
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