Remotely turn on and off display

It is possible to turn on and off your display remotely using ssh. To turn off the monitor, login on the remote machine with ssh and enter:

$ export DISPLAY=":0"

$ xset dpms force off

To turn it back on use the xset command again:

$ xset dpms force on

Play movie with mplayer via SSH

Playing a movie over ssh is very easy. Ssh into the machine you want to play the movie and enter:

export DISPLAY=":0"

mplayer ---

Mount and NFS Server and Client

This tutorial shows how I mounted an NFS file system in my home network with two computers.

SERVER

1) Install nfs-kernel-server package:

$ sudo apt-get install nfs-kernel-server

2) Create the export file system where the the NFS file system will be mounted to. In my case, the Storage directory:

$ sudo mkdir -p /export/Storage

3) I want to mount my external hard drive at /media/LACIE. To do that we enter:

$ sudo mount --bind /media/LACIE /export/Storage

4) If everything works out fine you should be able to access your files through the directory /exports/Storage. To make sure this will work at startup add the following line to the /etc/fstab file:

$ /media/LACIE /export/Storage none 0 0

5) In file /etc/default/nfs-kernel-server set:

NEED_SVCGSSD=no

6) In file /etc/default/nfs-common set:

NEED_IDMAPD=yes

NEED_GSSD=no

7) To export the directory to the machine with IP 10.42.43.3 we add in the /etc/exports file:

/export 10.42.43.3(rw,fsid=0,insecure,no_subtree_check,async)

/export/Storage 10.42.43.3(rw,nohide,insecure,no_subtree_check,async)

8) Now restart the service:

$ sudo service nfs-kernel-server restart

CLIENT

1) Install packages:

$ sudo apt-get install nfs-common

2) Mount the file system on the desired directory. In the command line below the IP 10.42.43.1 is the address of the server.

sudo mount -vt nfs4 -o proto=tcp,port=2049 10.42.43.1:/Storage /home/gbezerra/Storage

3) Finally, to make sure it works on boot add the following line to /etc/fstab:

10.42.43.1:/Storage /home/gbezerra/Storage nfs4 _netdev,auto 0 0

The reference I used was:

https://help.ubuntu.com/community/SettingUpNFSHowTo