add system

Check which file make the device busy on umount
This commit is contained in:
onceupon 2017-09-15 11:20:26 +08:00 committed by GitHub
parent 821380ddc3
commit 63201adc86

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@ -1977,6 +1977,12 @@ or Red Hat:
```bash
yum list installed
```
##### Check which file make the device busy on umount
```bash
lsof /mnt/dir
```
##### Tutorial for setting up your own DNS server
http://onceuponmine.blogspot.tw/2017/08/set-up-your-own-dns-server.html