> For the complete documentation index, see [llms.txt](https://kawsing.gitbook.io/opensystem/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kawsing.gitbook.io/opensystem/andoid-shou-ji/untitled/xi-tong-sun-huai-hai-yuan.md).

# 系統備份

### 進行系統備份

![](/files/-LoO6wGEKZoLsbc2JlRm)

![](/files/-LoO5uhX5aK3GG8YbAoI)

![](/files/-LoO6VnN2DYq0M2ULt1C)

<div align="left"><img src="/files/-LoO8F_U1p1z2BBfONnp" alt=""></div>

```
cd /etc/cron.d
/etc/cron.d# ls
anacron   e2scrub_all  openmediavault-mkrrdgraph  openmediavault-userdefined
cron-apt  mdadm        openmediavault-powermngmt  php
 cat openmediavault-userdefined
# This file is auto-generated by openmediavault (https://www.openmediavault.org)
# WARNING: Do not edit this file, your changes will get lost.
SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
# m h dom mon dow user    command
0 1 11 * * root /var/lib/openmediavault/cron.d/userdefined-86ee8ae5-3cad-4b8d-a2de-ead2f8dcf561 >/dev/null 2>&1

```

可以看到系統備份每月11日半夜1點

0 1 11 \* \*  root /var/lib/openmediavault/cron.d/userdefined-86ee8ae5-3cad-4b8d-a2de-ead2f8dcf561 >/dev/null 2>&1