add snapper notes

active/software_snapper/snapper.md

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+# Snapper
+
+## Snapper Installation
+
+We'll be using snapper, a tool for automating and controlling snapshot behavior.
+
+```bash
+dnf install snapper dnf-plugin-snapper
+
+# Allow selinux management
+semanage permissive -a snapperd_t
+
+# Note, if you mess something up you can run snapper -c root delete-config to delete
+# System configs are stored in /etc/sysconfig/snapper as well as /etc/snapper
+snapper -c root create-config /
+snapper -c data create-config /path/to/other/data
+
+# Enable automatic snapshots
+systemctl enable --now snapper-timeline.timer
+# Enable automatic cleanup
+systemctl enable --now snapper-cleanup.timer
+# Enable snapshots on boot
+systemctl enable --now snapper-boot.timer
+```
+
+## Snapper Cleanup
+
+```bash
+# List snapshots
+snapper -c root list
+# Create snapshot manually
+snapper -c root create --description "test snapshot"
+# Delete first snapshot
+snapper -c root delete 1
+# Delete snapshots between 655-857
+snapper -c root delete 655-857  
+```
+
+Note - you probably don't want to keep yearly snapshots.
+Edit `/etc/snapper/configs/root` and change `TIMELINE_LIMIT_YEARLY=` to `0`.