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Linux

The page contains the some useful Linux commands and also their applications to retrieve useful information. The list can be used as a reference by the readers.

This page will be updated from time to time as we learn new Linux commands. If anyone wishes to add to the list, please do add as a comment along with description. The same would be updated/append in the list

1. su – The ‘su‘ command is used to switch user from the current logged in user.

Example Usage: $ su root

2. Determine whether the Linux is 32 bit or 64 bit. There are two easy ways to determine bit info. Use either uname or getconf LONG_BIT

$ uname -m

x86_64 means 64-bit kernel
i686 means 32-bit kernel

$ getconf LONG_BIT will return either 32 or 64 (as per the system)

3. Enable Mouse Integration feature in VirtualBox

Type the below command in the terminal

#sudo gedit /etc/X11/xorg.conf

Add the below lines in the xorg.conf file

Section “InputDevice”
Identifier “Configured Mouse”
Driver “vboxmouse”
Option “CorePointer”
EndSection

Restart the machine and the feature will be enabled.

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Saurabh K. Gupta

Saurabh K. Gupta

Product Manager at Oracle, Author and blogger

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