http://www.a-days.com Just another WordPress weblog Fri, 19 Dec 2008 13:59:21 +0000 http://backend.userland.com/rss092 en ... http://www.a-days.com/index.php/2008/12/19/how-to-disable-directory-browsing-apache/ If you are new to Linux, chances are you will meet a stupid person perhaps in a forum or chat room that can trick you into using commands that will harm your files or even your entire operating system. To avoid this dangerous scenario from happening, I have here a ... http://www.a-days.com/index.php/2008/11/21/the-7-deadly-linux-commands/ If you want to work with zip files in Ubuntu command line interface, you will need these commands: zip and unzip. Zip To install zip if you don’t already have it, do this sudo apt-get install zip The simplest way to create a zip file (archive) is zip myzipfile.zip file1 file2 file3 ... Where myzipfile.zip is ... http://www.a-days.com/index.php/2008/11/06/zip-files-in-ubuntu-cli/ 1. Checking for cacti location and see db setting. monitor# pwd /usr/local/share/cacti/include see setting dbnya. monitor# cat db-settings.php <?php /* make sure these values refect your actual database/host/user/password */ $database_type = "mysql"; $database_default = "cacti"; $database_hostname = "localhost"; $database_username = "cacti"; $database_password = "cacti"; $database_port = "3306"; ?> 2. Enter database with information taken from db-settings.php information. monitor# mysql -ucacti -p Enter password: Welcome to ... http://www.a-days.com/index.php/2008/11/03/reset-cacti-password-step-by-step/  Control Character Commands ^ h Backspace. ^ d End text input, EOF for mail, write (also acts as logout command). ^ w Delete last word typed. ^ u Delete (undo) last line typed. ^ r Repeat last line typed. ^ s Stop the screen from scrolling (sometimes takes a while to be effective). ^ q Unlock terminal screen, continue scrolling. ^ c Interrupt running program ([Del] in System ... http://www.a-days.com/index.php/2008/10/31/a-list-of-unix-commands/ A query is considered as slow if it takes more than “long_query_time” seconds to execute. By default, the value of this variable is set to “1″. 1). Identifying MySQL slow queries ************************************ First let’s check on the mysql server if we have slow query logging enabled: mysqladmin var |grep log_slow_queries | log_slow_queries | OFF 2) ... http://www.a-days.com/index.php/2008/10/28/how-to-open-slow-query-logging-in-mysql/ With FreeBSD 5.4 and above the booting procedure is slightly changed. Under ilder version of FreeBSD use boot -s option at Ok prompt. However, with version FreeBSD 5.4+ you don't have to type any command. Here is the procedure to boot FreeBSD into a single user mode to reset root password. In ... http://www.a-days.com/index.php/2008/10/28/freebsd-reset-or-recover-root-password/ This tutorial will explain how to upgrade Ubuntu Server from Feisty to Hardy Step 1: Feisty to Gusty Upgrade first be sure your feisty up-to-date sudo apt-get update sudo apt-get upgrade sudo apt-get dist-upgrade if everything ok, ready for upgrade to gusty. nano /etc/apt/source.list all change "feisty" to "gutsy" save and exit (ctrl-x, yes) sudo apt-get update sudo apt-get dist-upgrade (one package ... http://www.a-days.com/index.php/2008/10/21/how-to-upgrade-ubuntu-server-from-feisty-704-to-hardy-804/ It is possible to create network alias or assign 2 ip address to a single NIC under FreeBSD operating system. Sample setup: => lnc0 - IP : 192.168.1.1/255.255.255.0 =>lnc0 alias - IP : 192.168.1.5/255.255.255.255 Note: Netmask must be diffrent otherwise you will get an error ifconfig: ioctl (SIOCAIFADDR): File exists Set ip alias using ifconfig ... http://www.a-days.com/index.php/2008/10/08/freebsd-setup-2-ip-address-on-one-nic-ip-alias/ MySQL server and client uses a file called my.cnf. You need to open /etc/my.cnf (Global mysqld configuration file) to specify new port. Open /etc/my.cnf file: # vi /etc/my.cnf Set new port 5123: port=5123 Here is is my sample /etc/my.cnf file: [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock port=5123 old_passwords=1 bind = 10.10.29.66 key_buffer = 500M table_cache = 4000 sort_buffer_size = 3M read_buffer_size = 2M read_rnd_buffer_size = 8M myisam_sort_buffer_size = 64M max_connections = ... http://www.a-days.com/index.php/2008/08/27/change-default-port-under-linux-unix/