Increase the Virtual Console Resolution
The virtual console normally displays 80x24 lines. For a higher resolution, edit /boot/grub/grub.conf and add a vga setting to the kernel line.
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389 notes on Linux, tools and troubleshooting
Find information on the maximum amount of memory that system can handle
On newer Linux systems, dmidecode reports the maximum memory capacity supported by the system BIOS.
Find which RPM contains a specific file
On Red Hat systems, use rpm, yum, or up2date to find which RPM package contains a particular file.
Install third party Nvidia graphics drivers in kernel-xen
Follow these steps to install Nvidia graphics drivers, starting with # telinit 3 to enter init 3.
How to use wpa_cli command
wpa_cli is included in the wpa_supplicant package. It checks status and changes configuration, including trigger events and passphrases for wireless connections.
Anti-spam appliances
Anti-spam appliances are hardware devices containing software to manage and fight email spam. They can serve as a mail server gateway or sit in front of the mail server.
Set up your Linux for Wake On LAN (WOL)
Wake on LAN starts a server through a network command from another machine. Configure both the server receiving the wake command and the client sending it.
Improve mouse tracking in a Virtual Machine Manager (virt-manager)
Incorrect mouse movement in a Linux virtual machine can be fixed in two ways: switch from the VNC console to an SDL console, although SDL in virt-manager…
Regenerate a GRUB device.map file
device.map maps hard disk devices to GRUB device names and is created during operating system installation. Recreate it if it is missing.