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Document crontab support

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Daniel Poelzleithner 2022-06-03 04:47:01 +02:00
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ChangeLog
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@ -3,6 +3,7 @@
add: support for tunnel commands add: support for tunnel commands
add: support for batchSizeLimit add: support for batchSizeLimit
add: -onepass option add: -onepass option
add: crontab support
change: support relative executable paths change: support relative executable paths
2018-03-09: 2.2.3 2018-03-09: 2.2.3

32
docs/manual/config/layer4/index.md
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@ -40,6 +40,7 @@ Following settings are shared between all defaults:
| Name | Description | | Name | Description |
|-----------------|------------------| |-----------------|------------------|
| source | Source directory | | source | Source directory |
| crontab | See section `Periodic Full-Sync`|
@ -694,3 +695,34 @@ Once the tunnel is UP, a full transfer is initiated. Subsequent transfers are th
* Pool mode only works with `rsync` backend, since there is no way to prevent multiple transfers to the same file in a relieable way, the rsync backend only supports `maxProcesses = 1` which renders pool mode useless. Since the remote side rsync daemon can prevent file trashing, the rsync backend is safe. * Pool mode only works with `rsync` backend, since there is no way to prevent multiple transfers to the same file in a relieable way, the rsync backend only supports `maxProcesses = 1` which renders pool mode useless. Since the remote side rsync daemon can prevent file trashing, the rsync backend is safe.
## Periodic Full-Sync
*New in: 2.3.0*
It is possible to trigger a full sync command from within lsync with the crontab feature. This requires that [lua-crontab](https://github.com/logiceditor-com/lua-crontab) is installed on the system. The crontab configuration accepts a list of `crontab` patterns to which a full sync will be triggered.
```lua
sync {
...
crontab = {
-- does a full sync once a day at 3:00:01
"1 0 3 * * *",
},
...
}
```
### Field destination
Each field is seperated by `" "` and can contain multiple values seperated by `,`.
| FIELD | VALUES | SPECIAL CHARACTERS |
|--------------|-----------------|--------------------|
| Seconds | 0-59 | , - * |
| Minutes | 0-59 | , - * |
| Hours | 0-23 | , - * |
| Day of month | 1-31 | , - * |
| Month | 1-12 or JAN-DEC | , - * |
| Day of week | 0-6 or SUN-SAT | , - * |