---
keywords:
  - IT
---
# Archlinux
### clean system from old files
```
paccache -r
paccache -ruk0
paccache -rk1

yay -Ycc
flatpak uninstall --unused
journalctl --disk-usage && journalctl --vacuum-size={size}M
```
or prepare the file`/etc/systemd/journald.conf` and this value:`SystemMaxUse=50M`

create for all btrfs filesystems a regulary scrub timer.
```bash
for p in $(lsblk -nflo FSTYPE,MOUNTPOINT | awk '$1=="btrfs"{print $2}'); do systemctl enable --now "btrfs-scrub@$(systemd-escape -p "$p").timer"; systemctl start "btrfs-scrub@$(systemd-escape -p "$p").service"; done
```
the manual way of creating is eating the correct escape.