September 2010

Individual Linux commands can be combined in the command line, to accomplish tasks that otherwise would require shell scripts to be written. This article provides 6 linux one liners that will help you accomplish few useful tasks. 1. Display Username and UID sorted by UID Using cut, sort and tr cut command is used to [...]

Using sudo command, an user can execute root only commands. In this article, let us review how to setup sudo environment along with some sudo command examples, tips, and tricks. 1. Set up sudo Environment in /etc/sudoers You can provide sudo privilege to an individual user or a group by modifying /etc/sudoers. sudo access to [...]

If you are a sysadmin, dba, network administrator, IT manager, or someone who is responsible for keeping the IT infrastructure up and running, you should implement a robust monitoring solution that will notify you when there is an issue. It should also notify the right people at the right time about a potential issue, even [...]

Do you have a MySQL database in your environment? Did you know that the easy (and most effective) way to manage MySQL database is using phpMyAdmin? phpMyAdmin is a web-based tool written in PHP to manage the MySQL database. Apart from viewing the tables (and other db objects), you can perform lot of DBA functions [...]

If you are a sysadmin, who is responsible for managing multiple servers, you should learn the fundamentals of virtualization and implement it in your environment. On a very high-level, you should get started by installing VMWare ESXi server, which can be managed using vSphere Client. Using vSphere client, you can create several virtual machines. If [...]

On Linux distributions, fdisk is the best tool to manage disk partitions. fdisk is a text based utility. Using fdisk you can create a new partition, delete an existing partition, or change existing partition. Using fidsk you are allowed to create a maximum of four primary partition, and any number of logical partitions, based on [...]

In this article, let us discuss how to manipulate the file handlers in Perl. 1. Typical Way of Opening a Perl File Handlers The perl example below opens a file with a bareword. This is a typical perl file open scenario. #!/usr/bin/perl open FH,"</tmp/msg"; Read Operation with Bareword file handle: #!/usr/bin/perl open FH,"</tmp/msg"; $line = [...]