Useful-commands.md

+# xcache service unit
+Show status
+```bash
+systemctl status systemd-nspawn@xcache
+```
+Restart
+```bash
+systemctl restart systemd-nspawn@xcache
+```
+Show logs
+```bash
+journalctl -eu systemd-nspawn@xcache [--since ...]
+```
+
+# container commands
+run a command in a new container using the xcache image (as xrootd user)
+```bash
+systemd-nspawn -D /var/lib/machines/xcache <command>
+```
+get a shell (as xrootd user)
+```bash
+systemd-nspawn -D /var/lib/machines/xcache /bin/bash
+```
+get a shell in a running container (as root, usually not nescessary)
+```
+nsenter --target=$(machinectl show --property Leader xcache | sed "s/^Leader=//")  --all
+```
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