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I am left handed person.
Therefore I want to interchange the typical mouse buttons for right and left clicks.

I want to do this via terminal. May someone please suggest the command for it?

Is it possible to interchange these clicks at the login screen also? I am using Ubuntu 12.04.

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2 Answers 2

up vote 6 down vote accepted
xmodmap -e "pointer = 3 2 1"

in a terminal should work. If you want to run that command at the start of lightdm (the default login screen), you can edit /etc/lightdm/lightdm.conf like described here - use the xmodmap command instead of xbacklight in the script, of course.

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this works for the present session.. how to make it permanent??? –  Fookraa Jun 16 '12 at 18:33
    
It should be permanent if you put it in /etc/lightdm/lightdm.conf. If not, you can put it in Startup Applications or create a .desktop file in ~/.config/autostart from the terminal. –  elmicha Jun 16 '12 at 19:45
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You can use also xinput to do this.

It will switch the buttons on one mouse only.

First use-

xinput list

To see where you mouse is will be somthing like

"USB Mouse"     id=12       [slave pointer]

So use the id number for the next command to switch the button assignment.

xinput set-button-map 12 3 2 1

So, you would switch out 12 with the id number of your mouse.

Source: 1

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