The Linux kernel has a modular design. At boot time, only a minimal resident kernel is loaded into memory. Thereafter, whenever a user requests a feature that is not present in the resident kernel, a kernel module, sometimes referred to as a driver, is dynamically loaded into memory. Continue reading “Kernel Modules”
Linux add module to blacklist
Check if the module is loaded
IPv6 functionality is being made available to the system by the ipv6 kernel module. To check if this module is currently loaded in your system, issue the following command as root:
lsmod | grep ipv6
If you see ipv6 in its output, then the module is loaded. Continue reading “Linux add module to blacklist”
Qmail linux mainames path
Qmail linux mainames path
/var/qmail/mailnames/domain/
Getting a lot of notification from DrWeb.
Resolution
It is possible to disable notifications from DrWeb. In order to do so, several corrections should be made in the Plesk database: Continue reading “Getting a lot of notification from DrWeb.”
WP Increasing memory allocated to PHP
Also released with Version 2.5, the WP_MEMORY_LIMIT option allows you to specify the maximum amount of memory that can be consumed by PHP. This setting may be necessary in the event you receive a message such as “Allowed memory size of xxxxxx bytes exhausted”.
This setting increases PHP Memory only for WordPress, not other applications. By default, WordPress will attempt to increase memory allocated to PHP to 32MB (code is at beginning of wp-settings.php), so the setting in wp-config.php should reflect something higher than 32MB.
Please note, this setting may not work if your host does not allow for increasing the PHP memory limit–in that event, contact your host to increase the PHP memory limit. Also, note that many hosts set the PHP limit at 8MB.
Increase PHP Memory to 64MB
define('WP_MEMORY_LIMIT', '64M');
Increase PHP Memory to 96MB
define('WP_MEMORY_LIMIT', '96M');
thanks http://codex.wordpress.org/Editing_wp-config.php#Increasing_memory_allocated_to_PHP
Ubuntu Networking Configuration Using Command Line
The basics for any network based on *nix hosts is the Transport Control Protocol/ Internet Protocol (TCP/IP) combination of three protocols. This combination consists of the Internet Protocol (IP),Transport Control Protocol (TCP), and Universal Datagram Protocol (UDP).
By Default most of the users configure their network card during the installation of Ubuntu. You can however, use the ifconfig command at the shell prompt or Ubuntu’s graphical network configuration tools, such as network-admin, to edit your system’s network device information or to add or remove network devices on your system Continue reading “Ubuntu Networking Configuration Using Command Line”