Update README.md

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@ -2270,11 +2270,10 @@ sudo dpkg --purge <package_name>
##### Create a ssh tunnel
```bash
ssh -f -L 9000:targetservername:8088 root@192.168.14.72 -N
```
#-f: run in background; -L: Listen; -N: do nothing
#the 9000 of your computer is now connected to the 8088 port of the targetservername through 192.168.14.72
#so that you can see the content of targetservername:8088 by entering localhost:9000 from your browser.
```
##### Count the number of Segate hard disks
```bash
lsscsi|grep SEAGATE|wc -l