evobackup/docs/incrementals.md

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# INCS CONFIGURATION
Located by default in /etc/evobackup/, each incl.tpl file is named
after the EvoBackup for which the rules it contains must apply.
The rules it defines decide which incremental backups are kept when
running `bkctl rm`
Each line defines a single rule. The first part of the rule describes
when the backup was taken, the second part decides how long to keep
it. Lines beginning with the # character are comments and are
ignored. The order of the rules does not matter.
Evobackups that do not have their nominal incl.tpl file use the
default rules defined in /usr/share/bkctld/inc.tpl
Keep today's backup:
```
+%Y-%m-%d.-0day
```
Keep yesterday's backup:
```
+%Y-%m-%d.-1day
```
Keep the first day of this month:
```
+%Y-%m-01.-0month
```
Keep the first day of last month:
```
+%Y-%m-01.-1month
```
Keep backups for every 15 days:
```
+%Y-%m-01.-1month
+%Y-%m-15.-1month
```
Keep a backup of the first day of january:
```
+%Y-01-01.-1month
```
Keep backups of the last 4 days and the first day of the last 2 months:
```
+%Y-%m-%d.-0day
+%Y-%m-%d.-1day
+%Y-%m-%d.-2day
+%Y-%m-%d.-3day
+%Y-%m-01.-0month
+%Y-%m-01.-1month
```