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| For the sake of example, I've added a Ping Reboot rule to the router's configuration. In the figure above you can see that creating such a rule also generates an entry (encapsulated in green) in the crontab list. Let's examine this entry: | | For the sake of example, I've added a Ping Reboot rule to the router's configuration. In the figure above you can see that creating such a rule also generates an entry (encapsulated in green) in the crontab list. Let's examine this entry: |
| | | |
− | * The '''/sbin/ping_reboot 1 8.8.8.8 NULL 2 56 5 1 0 cfg02c21d''' part indicates the action that is to be taken. In this case it is the ''/sbin/ping_reboot'' command with the options ''1 8.8.8.8 NULL 2 56 5 1 0 cfg02c21d'' that go with it | + | * The '''/sbin/ping_reboot 1 8.8.8.8 NULL 2 56 5 1 0 cfg02c21d''' part indicates the action that is to be taken. In this case it is the ''/sbin/ping_reboot'' command with the options ''1 8.8.8.8 NULL 2 56 5 1 0 cfg02c21d'' |
| * The '''*/5 * * * *''' part indicates the frequency at which the action is executed. It consists out of five segments: '''minute''', '''hour''', '''day of month''', '''month''' and '''day of week''' in that order. A table of examples on how to specify this frequency is presented below: | | * The '''*/5 * * * *''' part indicates the frequency at which the action is executed. It consists out of five segments: '''minute''', '''hour''', '''day of month''', '''month''' and '''day of week''' in that order. A table of examples on how to specify this frequency is presented below: |
| | | |
| {| class="wikitable" | | {| class="wikitable" |
| |+ | | |+ |
− | ! style="width: 130px; text-align: left;" | Segment | + | ! style="width: 130px; text-align: left;" | Segment |
| | style="width: 100px; text-align: center; | '''minute''' | | | style="width: 100px; text-align: center; | '''minute''' |
| | style="width: 100px; text-align: center; | '''hour''' | | | style="width: 100px; text-align: center; | '''hour''' |
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| | style="text-align: center; vertical-align: top;" | * | | | style="text-align: center; vertical-align: top;" | * |
| | style="text-align: center; vertical-align: top;" | * | | | style="text-align: center; vertical-align: top;" | * |
− | | style="text-align: left; vertical-align: top;" | every 5 minutes | + | | style="text-align: left; vertical-align: top;" | every 5 minutes |
| |- | | |- |
| | style="text-align: center; vertical-align: top;" | 12 | | | style="text-align: center; vertical-align: top;" | 12 |
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| | style="text-align: center; vertical-align: top;" | * | | | style="text-align: center; vertical-align: top;" | * |
| | style="text-align: center; vertical-align: top;" | * | | | style="text-align: center; vertical-align: top;" | * |
− | | style="text-align: left; vertical-align: top;" | every 3 hours at 12 minutes | + | | style="text-align: left; vertical-align: top;" | every 3 hours at 12 minutes |
| |- | | |- |
| | style="text-align: center; vertical-align: top;" | 57 | | | style="text-align: center; vertical-align: top;" | 57 |
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| | style="text-align: center; vertical-align: top;" | 1/6/12 | | | style="text-align: center; vertical-align: top;" | 1/6/12 |
| | style="text-align: center; vertical-align: top;" | * | | | style="text-align: center; vertical-align: top;" | * |
− | | style="text-align: left; vertical-align: top;" | At 11:57 Hrs on 15th of Jan, June & Dec. | + | | style="text-align: left; vertical-align: top;" | At 11:57 Hrs on 15th of Jan, June & Dec. |
| |- | | |- |
| | style="text-align: center; vertical-align: top;" | 25 | | | style="text-align: center; vertical-align: top;" | 25 |
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| | style="text-align: center; vertical-align: top;" | 1 | | | style="text-align: center; vertical-align: top;" | 1 |
| | style="text-align: center; vertical-align: top;" | 5 | | | style="text-align: center; vertical-align: top;" | 5 |
− | | style="text-align: left; vertical-align: top;" | At 6:25 AM every weekday (Mon-Fri) | + | | style="text-align: left; vertical-align: top;" | At 6:25 AM every weekday (Mon-Fri) |
| |- | | |- |
| | style="text-align: center; vertical-align: top;" | 0 | | | style="text-align: center; vertical-align: top;" | 0 |
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| | style="text-align: center; vertical-align: top;" | * | | | style="text-align: center; vertical-align: top;" | * |
| | style="text-align: center; vertical-align: top;" | * | | | style="text-align: center; vertical-align: top;" | * |
− | | style="text-align: left; vertical-align: top;" | At midnight on 4th, 12th and 26th of every month | + | | style="text-align: left; vertical-align: top;" | At midnight on 4th, 12th and 26th of every month |
| |- | | |- |
| | style="text-align: center; vertical-align: top;" | 5.10 | | | style="text-align: center; vertical-align: top;" | 5.10 |
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| | style="text-align: center; vertical-align: top;" | * | | | style="text-align: center; vertical-align: top;" | * |
| | style="text-align: center; vertical-align: top;" | 0,4 | | | style="text-align: center; vertical-align: top;" | 0,4 |
− | | style="text-align: left; vertical-align: top;" | At 9:05AM, 9:10AM, 2:05PM and 2:10PM every Sunday and Thursday | + | | style="text-align: left; vertical-align: top;" | At 9:05AM, 9:10AM, 2:05PM and 2:10PM every Sunday and Thursday |
| |- | | |- |
| |} | | |} |
| + | |
| ==External links== | | ==External links== |
| | | |
| https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html - PuTTY downloads page link | | https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html - PuTTY downloads page link |