> 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
```
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
---
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