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To do this, we?ll use nano to create a new configuration file called ?virtualbox.conf?. This file will go in the ?/etc/modules-load.d? directory, which contains files that need to be loaded when Arch boots up. Since adding a file to this directory requires administrative permissions, we?ll need to precede our command with ?sudo? once again.
When nano brings up the blank file, add these three lines to it:
As usual, when you?re finished entering text in nano, type Control-X to exit to the command line, and answer ?y? for yes when you?re asked whether you want to save your work, and then hit ?Return? to accept the filename. At this point, reboot your machine for the Guest Additions to take effect.
Here you have to choose the correct kernel number, for example linux38.
If not success clean cache and try again
00 is the number of the linux kernel e.g. linux39
Warning: Instead of immediately updating as soon as updates are available, users must recognize that due to the nature of Arch's rolling release approach, an update may have unforeseen consequences. This means that it is not wise to update if, for example, one is about to deliver an important presentation. Rather, update during free time and be prepared to deal with any problems that may arise.
Pacman is a powerful package management tool, but it does not attempt to handle all corner cases. Read The Arch Way if this causes confusion. Users must be vigilant and take responsibility for maintaining their own system. When performing a system update, it is essential that users read all information output by pacman and use common sense. If a user-modified configuration file needs to be upgraded for a new version of a package, a .pacnew file will be created to avoid overwriting settings modified by the user. Pacman will prompt the user to merge them. These files require manual intervention from the user and it is good practice to handle them right after every package upgrade or removal. See Pacnew and Pacsave Files for more info.
Tip: Remember that pacman's output is logged in /var/log/pacman.log.
this command also can run the last command as root
what's more, sudo !-2 can run the second last command as root , and so on
wait a hour and 10 seconds to shutdown
Advanced information about RAM.
Install the Linux kernel headers for currently running kernel version on Debian-based systems via apt-get
Replace default command in skype.desktop file.
Install Ksuperkey one command in Kubuntu.
You must manually add ksuperkey to autostart in System Settings KDE.
Your computer's name is raspberrypi and you want to rename it to pita1.
This command will change both the hostname and the name used for netwrk communications.
You can easily stop shutdowning process by CTRL+C
On wired connections set 'eth0' instead of 'wlan0'
Opening several files at once in Vim can be very easy in connection with find command.